Abrégé

An illumination system including a plurality of light-emitting elements, a light combining module, a first lens group, a second lens group and a wavelength conversion device is provided. The plurality of light-emitting elements provide a plurality of first light beams. The light combining module is used for combining the plurality of first light beams into a second light beam. The wavelength conversion device is used for converting the second light beam into the third light beam or reflecting the second light beam. The first lens group has a first central axis. The first lens group includes a first part and a second part which are symmetrical with respect to the first central axis and have equal areas, and a luminous flux of the second light beam passing through the first part is greater than a luminous flux passing through the second part.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables

Abrégé

A projection device of the present invention includes a casing, a light source module, a light source thermal module, a fan, and a projection lens; wherein the light source module, the light source thermal module, the fan and the projection lens are disposed in the casing, and the casing has a first side wall, a second side wall, and a bottom plate, wherein the first side wall includes a first air inlet, and the second side wall includes an air outlet; the orthographic projection range of the air outlet on the first side wall overlaps with the orthographic projection range of the light source thermal module on the first side wall, and the orthographic projection range of the projection lens on the first side wall does not overlap with the orthographic projection range of the light source thermal module on the first side wall.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

An ultra-short focus projection lens is configured to receive an image beam from an image source side and project the image beam toward a projection surface. The ultra-short focus projection lens has an optical axis. The ultra-short focus projection lens includes a reflective optical element, a first lens group, a stop, and a second lens group arranged in sequence along the optical axis. The image beam from the image source side passes through the second lens group, the stop, and the first lens group in sequence, and is reflected by the reflective optical element and projected to the projection surface. The first lens group includes a plurality of lenses having diopters. The second lens group 10 includes a plurality of lenses having diopters. The first lens group and the second lens group include ten lenses having diopters in total. A projection device is also provided.

Classes IPC  ?

• G02B 13/16 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous à utiliser en combinaison avec des convertisseurs ou des amplificateurs d'image
• G02B 13/18 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous avec des lentilles ayant une ou plusieurs surfaces non sphériques, p.ex. pour réduire l'aberration géométrique
• G02B 17/08 - Systèmes catadioptriques
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A projection device includes a shell, a lens, two first ribs, two second ribs, and a sliding cover. The shell has a top plate, a left sidewall, and a right sidewall, the top plate is respectively connected to the left sidewall and the right sidewall, and the top plate has an opening. The lens is disposed in the shell and exposed by the opening. The two first ribs are disposed on the top plate, extending directions of the two first ribs are perpendicular to the left sidewall and the right sidewall, and the opening is disposed between the two first ribs. The sliding cover is slidably disposed on the shell for covering the opening. The two second ribs are disposed on a top cover body of the sliding cover, and one of the two second ribs is located between the two first ribs.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A color wheel module and a projector are provided. The projector includes the color wheel module, and the color wheel module includes a disk, an isolation framework, an assembly member, and an adhesive filler. The disk is configured to rotate around an axis. The isolation framework and the assembly member are disposed on the disk. The isolation framework is located between the disk and the assembly member. An air layer is formed between the assembly member and the isolation framework. The adhesive filler is disposed on the assembly member.

Classes IPC  ?

• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables
• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/20 - Boîtes à lumière

Abrégé

A backlight module includes a light source, a first prism sheet disposed on the light source, and a light type adjustment sheet disposed on a side of the first prism sheet away from the light source and including a base and multiple light type adjustment structures. The multiple light type adjustment structures are disposed on the first surface of the base. Each light type adjustment structure has a first structure surface and a second structure surface connected to each other. The first structure surface of each light type adjustment structure and the first surface of the base form a first base angle therebetween, and the second structure surface of each light type adjustment structure and the first surface of the base form a second base angle therebetween. The angle of the first base angle is different from the angle of the second base angle.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

An illumination assembly includes a light source module and a light guide module. The light source module provides first and second beams. The light guide module includes a first light guide triangular prism having a first surface, a second surface and a beam-splitting surface. The first surface is located on a transmission path of the first beam, and the beam-splitting surface is located on a transmission path of the second beam. The first light guide triangular prism includes a first light guide layer arranged on the second surface and a first beam-splitting layer arranged on the beam-splitting surface. The first light guide layer guides the first beam to the first beam-splitting layer. The first beam-splitting layer allows the second beam to pass therethrough and reflect the first beam, so that the first and second beams are emitted from the second surface. A projection device is also provided.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 27/12 - Systèmes divisant ou combinant des faisceaux fonctionnant uniquement par réfraction

Abrégé

A multi-projector system and a method of calibrating the multi-projector system are provided. The method includes: controlling a first projector to project a first image, and capturing and generating a first captured image including the first image to obtain a first color value from the first captured image through an image capturing device; projecting a second image according to a first projection parameter, and capturing and generating a second captured image including the second image to obtain a second color value from the second captured image through the image capturing device, wherein the first projection parameter includes an electrical parameter of a light source module of the second projector; calculating an absolute difference between the first color value and the second color value; and adjusting the first projection parameter to update the absolute difference in response to the absolute difference being greater than a first threshold.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A projection device including a casing, a light source module, an optical engine module and a projection lens is provided. A front cover, a rear cover, a first side cover, a second side cover, an upper cover and a lower cover of the casing surround an accommodating space. The light source module includes a first and a second light sources, and a first and a second light source heat dissipation modules. The lower cover has a first, a second and a third air inlets. The first and the second side covers respectively have a first and a second air outlets. The first and the second light source heat dissipation modules are correspondingly disposed above the first air inlet and correspond to the first air outlet. The second and the third air inlets are respectively disposed below two sides of the projection lens and adjacent to the front cover.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G03B 21/20 - Boîtes à lumière
• G03B 31/00 - Travail en association d'appareils ou de projecteurs avec des moyens d'enregistrement ou de reproduction du son

Abrégé

A phototherapy device includes a base, at least one light conversion device and a light source module. The base has an installation slot. The light conversion device is detachably arranged in the installation slot. Each light conversion device includes a plurality of light conversion patterns. The light source module is arranged on a side of the base and configured to provide an excitation beam to the light conversion patterns, so that each of the light conversion patterns emits a converted beam. In this way, the light conversion device of the phototherapy device can be replaced according to the user's needs.

Classes IPC  ?

• A61N 5/06 - Thérapie par radiations utilisant un rayonnement lumineux

Abrégé

A light source assembly includes a first annular reflector, a second annular reflector and a plurality of first light source modules. The first annular reflector has a first reflective surface. The second annular reflector is coaxial with the first annular reflector. A radius of the first annular reflector is greater than that of the second annular reflector. The second annular reflector has a second reflective surface facing the first reflective surface. The first light source modules take a central axis of the first annular reflector as a center and annularly arranged around the center. The first light source modules provide first beams to the first reflective surface, which reflects the first beams to the second reflective surface. The second reflective surface reflects the first beams and makes the first beams emit along a direction parallel to a central axis of the second annular reflector. A projection device is also provided.

Classes IPC  ?

• G03B 21/28 - Réflecteurs dans le faisceau de projection
• F21V 7/00 - Réflecteurs pour sources lumineuses

Abrégé

A method for adjusting a projection boundary and a projection system are provided. Multiple imaging apparatuses corresponding to multiple projection apparatuses are driven, and each imaging apparatus obtains a corresponding captured image by capturing projected image projected by corresponding one projection apparatus and surrounding area of the projected image. All captured images are displayed on a display, and a main bounding box corresponding to each projected image and a reference bounding box corresponding to the surrounding area are displayed on each captured image. The main bounding box of each captured image is independently adjusted relative to the reference bounding box to obtain an adjusted main bounding box. A full image boundary is calculated based on the respective adjusted main bounding boxes. The projection apparatuses are driven to project an adjusted full image based on the full image boundary.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G06T 7/13 - Détection de bords

Abrégé

A display device including at least two light source modules and a display control substrate is provided. Each of the at least two light source substrates has a first surface and a second surface opposite to each other and includes a plurality of light emitting elements and a plurality of connection pads. The light emitting elements are located on the second surface, and the connection pads are located on the first surface and are electrically connected to the light emitting elements. The display control substrate includes a back plate and a plurality of control elements. The control elements are located on the back plate, part of the control elements are electrically connected to the connection pads to drive and control the light emitting elements, and the second surface of each of the at least two light source substrates forms a part of a display surface of the display device.

Classes IPC  ?

• H01L 33/62 - Dispositions pour conduire le courant électrique vers le corps semi-conducteur ou depuis celui-ci, p.ex. grille de connexion, fil de connexion ou billes de soudure
• H01L 23/00 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide
• H01L 25/075 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 25/13 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs ayant des conteneurs séparés les dispositifs étant d'un type prévu dans le groupe

Abrégé

A heat dissipation module disposed in a projection device and dissipating heat from a heat source includes a heat dissipation member, a thermoelectric cooler, a heat conduction member, and a sealant. The thermoelectric cooler has a heat absorbing surface, a heat dissipating surface contacting the heat dissipation member, and a first side surface adjacent between the heat absorbing surface and the heat dissipating surface. The heat conduction member has a first contact surface, a second contact surface opposite to the first contact surface, and a second side surface adjacent between the first and the second contact surfaces. The first contact surface contacts the heat source, and at least part of the second contact surface contacts the heat absorbing surface. The sealant is filled between the heat dissipation member and the heat source to cover the first side surface and the second side surface. A projection device is also provided.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

An anti-peep light source module includes a light source module and a viewing angle switching module. The light source module has a light source and a light guide plate (LGP) and has light emitting elements arranged along a first direction. The viewing angle switching module is located on a transmission path of an illumination beam of the light source module and includes a viewing angle limiting element and a viewing angle adjusting element configured to change a viewing angle of the illumination beam. The viewing angle limiting element has a grating structure and is located between the viewing angle adjusting element and the light source module. an included angle between an extension direction of the grating structure and the first direction is within a range from 88 degrees to 92 degrees. The anti-peep light source module and A display device achieve favorable optical performance, user experience, and production yield.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A backlight module includes a light guide plate, a light source, a first prism sheet, and a second prism sheet. The light source is disposed on a light incident surface of the light guide plate. The first prism sheet is disposed on a side of a light exiting surface of the light guide plate and has multiple first prism structures facing the light guide plate. The second prism sheet has multiple second prism structures facing the light guide plate. An included angle between an extending direction of the first prism structures and an extending direction of the second prism structures is greater than or equal to 85 degrees and less than or equal to 95 degrees. An included angle between the extending direction of the second prism structures and the light incident surface is greater than or equal to 85 degrees and less than or equal to 95 degrees.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A reflective diffusion device including a reflecting member and a diffusing member is provided, which are adapted for reflecting and diffusing an excitation light beam emitted from a light source module. The reflecting member has a central axis and includes a reflective surface facing the light source module. The diffusing member is disposed on a portion of the reflective surface of the reflecting member. The excitation light beam is incident on a first position of the reflective diffusion device in an incident direction parallel to the central axis, is reflected by the reflective surface and transmitted to a second position of the reflective diffusion device, and is then reflected by the reflective surface to maintain the excitation light beam or form a diffused light beam. The excitation light beam or the diffused light beam exits from the reflective diffusion device in an exit direction parallel to the central axis.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G02B 5/02 - Diffuseurs; Eléments afocaux
• G03B 21/20 - Boîtes à lumière

Abrégé

A reflective diffusion device includes a driving element having a rotation shaft, a reflective element including a central axis and disposed on the driving element, and a diffusion element. The central axis and the rotation shaft are collinear. The diffusion element is disposed on at least one portion of the reflective element, and the driving element drives the reflective element and the diffusion element to rotate along the central axis. A laser beam enters the diffusion element along an incident direction, is transmitted to the reflective element and reflected by the reflective element, and exits from the diffusion element along an exit direction to generate a diffusion beam. An incident angle between the incident direction and the central axis is greater than 0 degree, and an emergent angle between the exit direction and the central axis is greater than or equal to 0 degree.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

An illumination system including a light-emitting element, a wavelength conversion element, at least a first light homogenizing element and a second light homogenizing element is provided. The wavelength conversion element is configured to convert the excitation light beam into a conversion light beam, and through the wavelength conversion element, the excitation light beam and the conversion light beam sequentially form an illumination light beam. The at least one first light homogenizing element is configured to adjust a shape of a light spot formed by the excitation light beam on the wavelength conversion element. The second light homogenizing element is disposed on a transmission path of the illumination light beam from the wavelength conversion element, wherein a shape of a light incident surface of the at least one first light homogenizing element is the same as a shape of a light incident surface of the second light homogenizing element.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A projection device including a light source module, an optical engine module and a projection lens is provided. The optical engine module includes a casing, a heat-conducting base, a heat pipe, a light valve and a thermal conductive layer. The casing has an opening. The heat-conducting base has an assembly opening, wherein the heat-conducting base is disposed on the casing, and the assembly opening is aligned with the opening of the casing. The heat pipe is connected to the heat-conducting base and disposed on the heat-conducting base. The light valve is disposed on the heat-conducting base corresponding to the assembly opening. The light valve is thermally coupled to the heat-conducting base through the thermal conductive layer. The light valve has a first stepped surface and a second stepped surface, and the thermal conductive layer covers at least a part of the first stepped surface and the second stepped surface.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A display device includes a touch panel, an optical adhesive layer, and a front light module that includes a light source and a light guide plate (LGP) including multiple microstructures recessed into the LGP from a first surface of the LGP to form voids. The optical adhesive layer is adhered between the touch panel and a first surface of the LGP. A surface of the optical adhesive layer facing the LGP is in contact with the first surface of the LGP in multiple first regions, and a surface of the optical adhesive layer facing the LGP and the plurality of microstructures being overlapped in multiple second regions. A maximum vertical distance between each void and the first surface is a first depth. A vertical distance between the first regions and the second regions is 0 to 0.7 times the first depth.

Classes IPC  ?

• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A projection apparatus including a light source module, an eccentric-collimating lens, a prism lens group, a light valve and a projection lens is provided. The light source module is configured to provide an illumination light beam. The eccentric-collimating lens is disposed between the light sources and the light valve on a transmission path of the illumination light beam. The light valve is configured to convert the illumination light beam into an image light beam. The projection lens is configured to project the image light beam out of the projection apparatus. A first included angle between a first transmission direction of the illumination light beam incident on the eccentric-collimating lens and a central axis of the eccentric-collimating lens is greater than 0. The first transmission direction and a second transmission direction of the image beam exiting from the light valve are perpendicular to each other.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

An illumination system including two light source modules, two light guiding modules, a first reflector, and a light homogenization element is provided. The two light guiding modules are respectively disposed on transmission paths of light beams generated by the two light source modules to generate two guiding light beams. One of the guiding light beams is reflected to the light homogenization element by the first reflector. The other of the guiding light beams is directly transmitted to the light homogenization element. The guiding light beams are emitted from the light homogenization element and form an illumination light beam. A projection apparatus is also provided.

Classes IPC  ?

• G03B 21/28 - Réflecteurs dans le faisceau de projection
• G03B 21/20 - Boîtes à lumière

Abrégé

The disclosure provides a viewing angle control module including a first liquid crystal panel, a first polarizer, a second polarizer, and a phase retarder. The first liquid crystal panel includes a first substrate, a second substrate, a first alignment layer, a second alignment layer, a first liquid crystal layer, a first electrode layer, and a second electrode layer. A second alignment direction of the second alignment layer is antiparallel to a first alignment direction of the first alignment layer. The first electrode layer has multiple electrode patterns arranged at intervals along a first direction and extending along a second direction. A first absorption axis of the first polarizer is perpendicular to a second absorption axis of the second polarizer. An included angle between the first absorption axis and the first alignment direction is 45 degrees. A display apparatus including the viewing angle control module is also provided.

Classes IPC  ?

• G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
• G02F 1/1343 - Electrodes
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• G02F 1/13363 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs Éléments à biréfringence, p.ex. pour la compensation optique
• G02F 1/1347 - Disposition de couches ou de cellules à cristaux liquides dans lesquelles un faisceau lumineux est modifié par l'addition des effets de plusieurs couches ou cellules
• G02F 1/133 - Dispositions relatives à la structure; Excitation de cellules à cristaux liquides; Dispositions relatives aux circuits
• G02F 1/1337 - Orientation des molécules des cristaux liquides induite par les caractéristiques de surface, p.ex. par des couches d'alignement

Abrégé

An illumination system providing an illumination beam includes a light source module generating first to third color beams, a light splitting and combining element, a beam expanding and collimating module, a reflecting element, and a light combining module. The first and second color beams are reflected by the light splitting and combining element after being transmitted to the light splitting and combining element. Paths of the first and second color beams leaving the light splitting and combining element are coincident. The first and second color beams from the light splitting and combining element are expanded and collimated by the beam expanding and collimating module and transmitted to the light combining module. The third color beam is reflected by the reflecting element and transmitted to the light combining module. Paths of the first to third color beams after leaving the light combining module are coincident. A projection device is provided.

Classes IPC  ?

• G03B 33/12 - Enregistrement ou projection simultanés faisant usage de systèmes à division des rayons ou à combinaison des rayons, p.ex. de miroirs dichroïques
• G03B 21/20 - Boîtes à lumière

Abrégé

A projection lens, a control method thereof, and a projection device are provided. The projection lens is adapted for the projection device, and includes a lens body including an aperture assembly and a lens element group; an aperture adjustment module disposed on the lens body, connected to the aperture assembly, and configured to adjust the aperture assembly; a lens element adjustment module disposed on the lens body, connected to the lens element group, and configured to adjust the lens element group; and a switching assembly coupled to the aperture adjustment module and the lens element adjustment module. The switching assembly is configured to switch to a first state, so that the lens element adjustment module adjusts the lens element group, and the switching assembly is configured to switch to a second state, so that the aperture adjustment module group adjusts the aperture assembly.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A light source module applicable to a projection device includes a heat dissipation assembly, a first light source, and a second light source. The heat dissipation assembly includes first and second heat dissipation components. The first heat dissipation component includes a first base and a first fin set. The first fin set has a first ventilation surface. The second heat dissipation component includes a second base and a second fin set. The second base has a first surface, a second surface and a ventilation opening. The first surface is opposite to the second surface. The second fin set is arranged on the first surface. The second surface faces the first ventilation surface. The ventilation opening penetrates the first and second surfaces and is aligned with the first ventilation surface. The first light source is arranged on the first base. The second light source is arranged on the second base.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/20 - Boîtes à lumière

Abrégé

A wavelength conversion device includes a main body, a counterweight element, and an adhesive. The main body has a first surface, a second surface, multiple through holes, and a recess. The recess is located on the central axis of the wavelength conversion device and is recessed into the main body relative to the first surface, and the recess has a blocking surface surrounding the central axis. The through holes has multiple segments, which are respectively partial inner walls of the through holes. The counterweight element is disposed in the recess and is supported by the blocking surface. An orthographic projection of the through hole corresponding to at least one of the segments on the second surface at least partially overlaps the orthographic projection of the counterweight element on the second surface in the direction parallel to the central axis. The adhesive at least partially covers the counterweight element.

Classes IPC  ?

• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables
• G03B 21/20 - Boîtes à lumière

Abrégé

The disclosure provides an illumination system including a light source module and a light deflection and diffusion element. The light source module is configured to emit at least one excitation light beam. The light deflection and diffusion element is disposed on a transmission path of the excitation light beam. The light deflection and diffusion element has a central axis. The light deflection and diffusion element includes a plurality of inclined surfaces. Each inclined surface has a different normal direction. The inclined surface is configured to deflect the excitation light beam toward the central axis of the light deflection and diffusion element. The disclosure also provides a projection device including the illumination system.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A projection system includes a projection device, a light sensor, a control unit, and an arithmetic unit. The projection device is configured to project an image beam toward a projection surface. The light sensor is configured to sense at least one of a background beam and the image beam reflected by the projection surface and obtaining chromaticity information. The control unit is electrically connected to the projection device, and configured to control the image beam projected by the projection device. The arithmetic unit is electrically connected to the control unit and the light sensor. The arithmetic unit is configured to generate an adjustment signal according to the chromaticity information. The control unit is configured to adjust a color temperature, a brightness, and a color gamut of the image beam according to the adjustment signal. A calibration method of the projection system is also proposed.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A wavelength conversion device includes a disk, a wavelength conversion material, a light-transmitting counterweight ring, a first adhesive layer and at least one counterweight member. The disk has a central axis and rotates around the central axis as the rotation axis. The wavelength conversion material is arranged on the outer edge of the upper surface of the disk. The light-transmitting counterweight ring is arranged on the upper surface of the disk. The first adhesive layer is arranged between the light-transmitting counterweight ring and the disk. At least one counterweight member is disposed on one side of the light-transmitting counterweight ring away from the disk. The at least one counterweight member includes a weight and a photocured component covering the weight, and at least part of the photocured component is located between the weight and the light-transmitting counterweight ring. A projection device is also provided.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables

Abrégé

An electrically controlled optical screen including a switchable scattering element and an electrically controlled decorating module is provided. The switchable scattering element is disposed on a side of the electrically controlled decorating module and is configured to switch between a scattering state and a transparent state. The electrically controlled decorating module includes a first polarizer, a first quarter-wave plate, a cholesteric liquid crystal layer, an electrically controlled wave plate, a second quarter-wave plate and a second polarizer, which are sequentially stacked. The electrically controlled wave plate has a liquid crystal layer. The second polarizer is disposed between the switchable scattering element and the second quarter-wave plate.

Classes IPC  ?

• G02F 1/137 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides caractérisés par l'effet électro-optique ou magnéto-optique, p.ex. transition de phase induite par un champ, effet d'orientation, interaction entre milieu récepteur et matière additive ou diffusion dynamique
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• G02F 1/13363 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs Éléments à biréfringence, p.ex. pour la compensation optique
• G02F 1/139 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides caractérisés par l'effet électro-optique ou magnéto-optique, p.ex. transition de phase induite par un champ, effet d'orientation, interaction entre milieu récepteur et matière additive ou diffusion dynamique basés sur des effets d'orientation où les cristaux liquides restent transparents

Abrégé

A display apparatus includes a display board and at least one image generating device. The display board has at least one display region, which includes a substrate, a decorative film, and a holographic optical element film. The decorative film is disposed on one side of the substrate. The holographic optical element film is disposed in at least one of the at least one display region, and disposed on another side of the substrate relative to the decorative film. The substrate is disposed between the decorative film and the holographic optical element film. The at least one image generating device is configured to project image light toward the holographic optical element film. The holographic optical element film is disposed between the substrate and the image generating device. The holographic optical element film converts the image light into display light, and transmits the display light toward the substrate.

Classes IPC  ?

• G02B 5/32 - Hologrammes utilisés comme éléments optiques
• G02B 27/18 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour projection optique, p.ex. combinaison de miroir, de condensateur et d'objectif
• G06F 3/041 - Numériseurs, p.ex. pour des écrans ou des pavés tactiles, caractérisés par les moyens de transduction
• B60K 35/00 - Agencement ou adaptations des instruments

Abrégé

An electrically controllable viewing angle switch device is provided with a first substrate, a second substrate, a liquid crystal layer, multiple spacers, and multiple light-shielding patterns. The first substrate and the second substrate are overlapped with each other. The liquid crystal layer and the multiple spacers are disposed between the first substrate and the second substrate. The multiple light-shielding patterns are disposed on the second substrate. The orthographic projection area of each spacer on the second substrate is less than or equal to the orthographic projection area of each light-shielding pattern on the second substrate. The orthographic projection of each spacer on the second substrate is located within the orthographic projection of each light-shielding pattern on the second substrate. A display apparatus using an electrically controllable viewing angle switch device is also provided, in which light leakage near the spacer is extremely slight.

Classes IPC  ?

• G02F 1/1339 - Dispositions relatives à la structure Éléments d'espacement; Scellement des cellules
• G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• G02F 1/1337 - Orientation des molécules des cristaux liquides induite par les caractéristiques de surface, p.ex. par des couches d'alignement

Abrégé

An illumination system includes a first light source module, a second light source module, a light combiner and a light homogenizing element. The light combiner is disposed on a transmission path of the first light beam and the second light beam. The first light beam enters the light combiner from the first surface and is transmitted to the second surface to emit light. The second light beam enters the light combiner from the third surface, is totally reflected on the first surface of the light combiner, and is transmitted to the second surface to emit light. The light spot of the first light beam on the light incident surface of the light homogenizing element overlaps with the light spot of the second light beam on the light incident surface of the light homogenizing element.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

An illumination system includes first to third reflection components, a first light splitting and combining element, and a lens. The first and second reflection components reflect a first color beam and another first color beam, respectively. The third reflection element reflects a second color beam and another second color beam. The first light splitting and combining element passes the second color beams and reflects the first color beams. The first color beams and the second color beams leaving the first light splitting and combining element respectively form first and second irradiation areas not overlapped with each other and third and fourth irradiation areas not overlapped with each other on the lens, and each of the first and second irradiation areas are overlapped with at least a portion of the third and fourth irradiation areas.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A heat dissipation module and a projection device are provided. The heat dissipation module is used to dissipate heat from an integrating element of the projection device. The integrating element has a light incident surface, a light-emitting surface, and an optical axis. The heat dissipation module includes a rotating member, a first fixing frame, and a second fixing frame. The rotating member is adjacent to the light incident surface and includes a substrate and a driving device. The first fixing frame surrounds the integrating element along a circumferential direction of the integrating element. The first fixing frame has a peripheral surface and fins disposed at intervals. An extending direction of each fin is not parallel to the optical axis. The second fixing frame surrounds along a circumferential direction of the first fixing frame and has a space with the peripheral surface. The fins are disposed in the space.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

A projection device including an illumination system, a light valve, and a projection lens is provided. The illumination system emits an illumination light beam. The illumination system includes at least one light-emitting device, and the at least one light-emitting device includes multiple light-emitting assemblies. The light valve is disposed on a transmission path of the illumination light beam and converts the illumination light beam into an image light beam. The light valve includes multiple light modulation regions. The projection lens is disposed on a transmission path of the image light beam, and is configured to project the image light beam out of the projection device. The illumination light beams emitted by the light-emitting assemblies of the at least one light-emitting device form multiple light spots on the light valve, and the light modulation regions are respectively covered by the light spots.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G03B 21/20 - Boîtes à lumière

Abrégé

A lighting system includes a first light source module providing a first light beam, a second light source module providing a second light beam, a beam splitting element with a first and a second side, a light condensing element, and a light homogenizing element. The beam splitting element guides the first portion of the first light beam to be output from the first side to be incident on the light homogenizing element and guides the second portion of the first light beam to be output from the second side to be incident on the light homogenizing element. The beam splitting element guides the first portion of the second light beam to be output from the first side to be incident on the light homogenizing element and guides the second portion of the second light beam to be output from the second side to be incident on the light homogenizing element.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A heat dissipation module of a projection device includes a heat generating component, a thermoelectric cooling chip, a heat insulating hollow body, a heating element and a control element. The thermoelectric cooling chip has opposite hot and cold ends. The cold end is connected to the heat generating component. The heat insulating hollow body has first and second openings communicating with each other. The thermoelectric cooling chip is disposed in and seals the first opening. The cold end is located in the heat insulating hollow body. The heat generating component is disposed in and seals the second opening. The heating element heats the heat insulating hollow body. The control component is electrically connected to the heating element and determines whether a temperature in the projection device reaches a dew point temperature and drives the heating element to heat the heat insulating hollow body accordingly. An anti-condensation method is also provided.

Classes IPC  ?

• F25B 47/00 - Dispositions pour éviter ou enlever la corrosion ou les dépôts, non prévues dans une autre sous-classe
• F25B 21/02 - Machines, installations ou systèmes utilisant des effets électriques ou magnétiques utilisant l'effet Nernst-Ettinghausen
• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

A connection detection device and a connection detection method for detecting a connection state between a first connector and a second connector are provided. The first connector includes detection pins. The second connector includes loop pins corresponding to the detection pins. The connection detection device includes a bias voltage generator, a detection circuit, and a processor. The bias voltage generator applies a reference bias voltage to the detection pins. The detection circuit detects bias values on the detection pins. When each bias value is shifted to a first bias value based on a connection loop formed between the detection pins and the loop pins, the detection circuit provides a first detection signal. When at least one of the bias values is not shifted to the first bias value, the detection circuit provides a second detection signal. The processor provides an alarm signal in response to the second detection signal.

Classes IPC  ?

• G01R 31/55 - Test de lignes pour déceler des connexions incorrectes

Abrégé

A projection system and a control method thereof are provided. The projection system includes a projection module, a mmWave sensor, and a control circuit. The projection module projects an image beam to a projection surface. The mmWave sensor is configured to sense an object entering a sensing range and obtain a sensing result. The control circuit is coupled to the projection module and the mmWave sensor, and the control circuit controls the projection module to provide the image beam according to the sensing result of the mmWave sensor.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• H05B 47/115 - Commande de la source lumineuse en réponse à des paramètres détectés en détectant la présence ou le mouvement d'objets ou d'êtres vivants

Abrégé

A wavelength conversion device includes a substrate, a reflection layer, a wavelength conversion layer, and a first optical layer. The wavelength conversion device has a central axis. The reflection layer is disposed on an upper surface of the substrate. The central axis is perpendicular to the upper surface. The wavelength conversion layer is disposed on the reflection layer and around the central axis, has a complete or partial annular shape, and includes a first region and two second regions. The first region is located between the second regions. The first optical layer is disposed on a surface of the wavelength conversion layer and corresponds to the first region. In an axial direction, an orthographic projection of the first optical layer on the upper surface is not overlapped with an orthographic projection of the second regions on the upper surface. The first optical layer includes first diffusing particles.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables

Abrégé

An infrared (IR) light source module for providing an IR light beam includes at least one circuit substrate, first IR light-emitting elements, and second IR light-emitting elements. The first IR light-emitting elements are disposed on the at least one circuit substrate. The first IR light-emitting elements are used to provide a first light beam. The second IR light-emitting elements are disposed on the at least one circuit substrate. The second IR light-emitting elements are used to provide a second light beam. The IR light beam includes at least one of a first light beam and a second light beam, wherein a wavelength of the first light beam is greater than or equal to 700 nm and less than or equal to 780 nm, and a wavelength of the second light beam is greater than 780 nm and less than or equal to 1000 nm.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A power supply module and a power supply judgment method thereof are provided. A power supply circuit supplies power to an electronic device coupled to the power supply module. A plugging detection circuit detects the connection state of the electronic device. A judgment circuit switches the electronic device to connect to a first signal channel or a second signal channel in response to whether the electronic device provides device information of the electronic device within a preset time since the electronic device is coupled to the power supply module. The power supply judgment method of the invention automatically sets signal channel configurations corresponding to different external devices, thereby greatly improving the convenience of use.

Classes IPC  ?

• H03K 17/00 - Commutation ou ouverture de porte électronique, c. à d. par d'autres moyens que la fermeture et l'ouverture de contacts
• G06F 1/26 - Alimentation en énergie électrique, p.ex. régulation à cet effet

Abrégé

A near-eye optical display apparatus includes an optical waveguide, an image beam source, and an electrically controlled liquid crystal cell. The image beam source is disposed on one side of a first light incident surface to provide an image beam. After being transmitted through the optical waveguide, the image beam exits from the light-exit surface. The liquid crystal cell is disposed on one side of a second light incident surface, and has a first sight region and a second sight region disposed in a first direction. When a driving voltage is supplied to the liquid crystal cell, the percentage of an average transmittance of the second sight region for an ambient beam and an average transmittance of the first sight region for the ambient beam is less than or equal to 50%. The display contrast of the near-eye optical display apparatus proposed by the invention is not easily affected by the external environment.

Classes IPC  ?

• G02B 27/01 - Dispositifs d'affichage "tête haute"
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• G02F 1/1337 - Orientation des molécules des cristaux liquides induite par les caractéristiques de surface, p.ex. par des couches d'alignement
• G02F 1/13363 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs Éléments à biréfringence, p.ex. pour la compensation optique

Abrégé

A projection device including a casing, an operation module, a main board, and a conducting element is provided. The operation module includes an operation element and an operation circuit board. The operation element is disposed on the casing to execute a first operation. The operation circuit board is coupled to the operation element. The operation circuit board includes a wireless signal emitter and a first conducting portion. The operation circuit board generates a first operation signal in response to the first operation, and the wireless signal emitter emits the first operation signal. The main board includes a wireless signal receiver and a second conducting portion. The wireless signal receiver is configured to receive the first operation signal, and the main board is configured to execute a first action corresponding to the first operation signal. The conducting element is electrically connected to the first conducting portion and the second conducting portion.

Classes IPC  ?

• G06F 3/038 - Dispositions de commande et d'interface à cet effet, p.ex. circuits d'attaque ou circuits de contrôle incorporés dans le dispositif

Abrégé

The disclosure provides a light valve module comprising a main casing, a light valve element, a heat dissipation structure and a supporting component. The light valve element is connected to the main casing. The heat dissipation structure is connected to the main casing and is in contact with the light valve element. The supporting component comprises an extending portion and a supporting portion. An end of the extending portion is connected to the main casing. The supporting portion is formed on another end of the extending portion. A part of the heat dissipation structure is suspended above the extending portion and adapted to be supported by the supporting portion.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/20 - Boîtes à lumière
• F21V 29/75 - Dispositions de refroidissement caractérisées par des éléments passifs de dissipation de chaleur, p.ex. puits thermiques avec ailettes ou lames avec ailettes ou lames ayant des formes, des épaisseurs ou des espacements différents

Abrégé

A projection apparatus is provided, including a lens module, a movement element, a sensing element, and a lens control element. When the lens module moves to the origin position, the lens control element controls an image beam to focus on a first position on a reference plane in one of the tele mode and the wide mode, the lens control element controls the image beam to focus on a second position on the reference plane in the other mode, and the lens control element determines whether there is an offset between the first position and the second position. When the offset exists, the lens control element adjusts a movement parameter value of the movement element based on the offset value between the first position and the second position, so that the image beam is focused on the same position on the reference plane in the tele mode and wide mode.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G03B 21/53 - Systèmes de mise au point automatique, p.ex. pour compenser les effets thermiques

Abrégé

The disclosure provides a projection device including a casing structure, a light source, a light valve element and a projection lens. The casing structure includes a main casing and at least one shielding structure. The main casing has an inner space and at least one heat dissipation opening, and the at least one shielding structure is connected to an inner surface of the main casing to be located in the inner space. The light source is disposed in an arrangement region of the inner space for providing an illumination beam. The light valve element is disposed in the arrangement region for converting the illumination beam into an image beam. The projection lens is disposed in the arrangement region for projecting the image beam. The shielding structure shades the at least one heat dissipation opening, such that the arrangement region is invisible from outside of the main casing.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A projection apparatus includes a casing, a projection lens, a first fan, a first light source module, a second light source module, a first heat dissipation module, and a second heat dissipation module. A disposing direction of the projection lens divides an accommodating space of the casing into a first region and a second region. The first fan, the first light source module, the second light source module, the first heat dissipation module, and the second heat dissipation module are located in the first region. The first heat dissipation module includes a first heat dissipation fin set and a first heat pipe. The first heat pipe is connected to the first base of the first light source module and the first heat dissipation fin set. The first heat dissipation fin set is disposed adjacent to a first air inlet, and in an axial direction of the first fan.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A head up display device includes an image generation unit, an imaging unit, an infrared light splitting element, and at least one infrared light detecting element. The infrared light splitting element is located on a transmission path of at least one ambient light beam, and configured to split an infrared light beam from the at least one ambient light beam. The at least one infrared light detecting element is located on a transmission path of the infrared light beam of the at least one ambient light beam, and configured to detect light intensity of the infrared light beam. When the at least one infrared light detecting element detects that the light intensity of the infrared light beam exceeds a predetermined threshold, the head up display device reduces light intensity of a portion of the at least one ambient light beam transmitted to the image generation unit.

Classes IPC  ?

• G02B 26/02 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander l'intensité de la lumière
• G02B 27/01 - Dispositifs d'affichage "tête haute"
• G02B 27/14 - Systèmes divisant ou combinant des faisceaux fonctionnant uniquement par réflexion
• G02B 27/00 - Systèmes ou appareils optiques non prévus dans aucun des groupes ,
• G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
• G02B 27/10 - Systèmes divisant ou combinant des faisceaux
• G01J 5/10 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique en utilisant des détecteurs électriques de radiations

Abrégé

A display device including a light source module and a wavelength conversion module is provided. The light source module includes a substrate, a plurality of first LED elements and a second LED element. The first LED elements are configured for providing a plurality of first color lights, and the second LED element is configured for providing a second color light. The wavelength conversion module is overlapped and arranged on the light source module, and the wavelength conversion module includes a wavelength conversion element and at least one dichroic filter layer. The wavelength conversion element is configured to absorb the first color lights emitted by a part of the first LED elements and excite a converted light beam, wherein a color of the converted light beam is different from that of the first color lights and the second color light.

Classes IPC  ?

• H01L 25/075 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
• H01L 33/58 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de mise en forme du champ optique

Abrégé

A light source device and a manufacturing method of the light source device is provided. The light source device includes a micro light-emitting element layer, a transparent substrate and a wavelength conversion module. The wavelength conversion module includes a first wavelength conversion layer, a second wavelength conversion layer, a light transmission layer, multiple barrier structures, multiple reflection layers and a light cut-off layer. The first wavelength conversion layer, the second wavelength conversion layer, and the light transmission layer are arranged in an arrangement direction. Any two of the first wavelength conversion layer, the second wavelength conversion layer, and the light transmission layer are separated from each other by one of the barrier structures. The reflection layers are located between the barrier structures and any one of a sidewall of the first wavelength conversion layer, a sidewall of the second wavelength conversion layer, and a sidewall of the light transmission layer.

Classes IPC  ?

• H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
• H01L 25/075 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 33/20 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les corps semi-conducteurs ayant une forme particulière, p.ex. substrat incurvé ou tronqué

Abrégé

A method and a projection system for calibrating a projection area of a projector are provided. The method includes the following. A calibration pattern is projected to form a projection area, and includes a first original mark group and a second original mark group. A captured image including the projection area is obtained. Whether the captured image includes a closed area formed by a complete line is determined. A first calibration operation is performed when the captured image does not include the closed area. A second calibration operation is performed when the projection area in the captured image includes the complete closed area. The projection area is calibrated according to a first mark group or a second mark group in the captured image during the first calibration operation. The projection area is calibrated according to the second mark group in the captured image during the second calibration operation.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G06T 7/11 - Découpage basé sur les zones

Abrégé

A projector includes a projection device, a capturing device, and a controller. The projection device is configured to project an image beam to form a correction frame. The capturing device is configured to capture a correction frame to generate a captured image frame. The controller is electrically connected to the projection device and the capturing device. The controller receives the captured image frame and adjusts the brightness of the correction frame according to the brightness in the capture area of the captured image frame, and records RGB values of the adjusted correction frame and the capturing parameter of the capturing device after adjusted. An adjustment method for the correction frame of the projector is also provided.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A method for operating a near-eye display device is provided, which includes: disposing the near-eye display device in front of an eye of a user; forming a display image through the near-eye display device; changing the display image to perform a short-distance vision examination on the eye; changing the display image to perform a long-distance vision examination on the eye; obtaining vision examination data of the user according to results of the short-distance vision examination and the long-distance vision examination, and storing the vision examination data; and according to the vision examination data, adjusting a system parameter of the near-eye display device.

Classes IPC  ?

• A61B 3/00 - Appareils pour l'examen optique des yeux; Appareils pour l'examen clinique des yeux
• A61B 3/10 - Appareils pour l'examen optique des yeux; Appareils pour l'examen clinique des yeux du type à mesure objective, c. à d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient

Abrégé

An illumination system includes a light source module, a first lens array, a condensing element, a second lens array, and a prism element. The light source module is configured to provide an illumination beam. The first lens array is disposed on the transmission path of the illumination beam. The condensing element is disposed on the transmission path of the illumination beam. The first lens array is located between the light source module and the condensing element. The second lens array is disposed on the transmission path of the illumination beam. The prism element is disposed on the transmission path of the illumination beam. The second lens array is located between the condensing element and the prism element, wherein the surface area of the second lens array is greater than the surface area of the first lens array.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 3/00 - Lentilles simples ou composées
• G02B 27/30 - Collimateurs
• G02B 19/00 - Condenseurs

Abrégé

A backlight module includes a light guide element including first optical microstructures and second optical microstructures. An angle value of an angle of the first optical microstructures is V1. When the second optical microstructures are respectively recessed into or protrude from a bottom surface, a projection of each sub-optical microstructure on a reference plane has a peak point closest or to farthest from a light emitting surface and a first valley point and a second valley point farthest from or closest to the light emitting surface, a height difference between the peak point and the first valley point or the second valley point is ΔH, a length difference between the peak point and the first valley point or the second valley point is ΔL, and tan−1(ΔH/ΔL) is V2, where V2>0 and V2≤0.5·V1.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

An interactive projection system including a projector and a touch interactive light source device is provided. The projector includes a projection optical engine, a camera module, and a control module. The touch interactive light source device includes at least one infrared light source module and a wireless signal transmission module. The control module is electrically connected to the projection optical engine and the camera module, and controls the touch interactive light source device through the wireless signal transmission module, so that the touch interactive light source device is placed in a recommended installation position and the interactive projection system is in an interactive mode. An operation method of the interactive projection system is also provided.

Classes IPC  ?

• G06F 3/042 - Numériseurs, p.ex. pour des écrans ou des pavés tactiles, caractérisés par les moyens de transduction par des moyens opto-électroniques
• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A lens module includes a fixing seat, a moving assembly, a lens unit, a first sliding member, a first knob, and a first fixing member. The fixing seat has a first guide slot extended along a first axis. The moving assembly is disposed on the fixing seat and includes a first inclined surface. The lens unit is fixed to the moving assembly. The first sliding member is movably disposed on the fixing seat along a second axis and connected to the moving assembly, and the first sliding member includes a second inclined surface. The first knob is disposed on the fixing seat and connected to the first sliding member, and the first knob is configured to drive the first sliding member to move relative to the fixing seat. The first fixing member passes through the moving assembly and the first guide slot and is fixed on the fixing seat.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

Provided is a wavelength conversion module including a driving assembly, a metal substrate, a first and a second concave-convex structure, a transparent plate, and a wavelength conversion layer. The driving assembly is connected to the substrate and drives the substrate to rotate. The substrate and the first and the second concave-convex structure are integrally formed. The first and the second concave-convex structure are disposed around the center, and the second concave-convex structure surrounds the first concave-convex structure. The substrate has a first balance hole and an accommodating groove. The first concave-convex structure is located between the accommodating groove and the center. The first balance hole is located in the accommodating groove and penetrates the substrate. The transparent plate is disposed in the accommodating groove of the substrate and covers the first balance hole. The wavelength conversion layer is arranged in an annular pattern with the transparent plate.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G02B 7/00 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques
• G02B 13/00 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous
• G02B 27/18 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour projection optique, p.ex. combinaison de miroir, de condensateur et d'objectif

Abrégé

An optical lens adapted to receive an image beam from an imaging element is provided. The optical lens sequentially includes a first lens, a second lens, a third lens, and a fourth lens with refracting power along an optical axis from a light incidence side to a light exit side, and the first lens to the fourth lens each include a light incidence surface facing the light incidence side and a light exit surface facing the light exit side. The first lens has positive refracting power. The second lens has negative refracting power. The third lens has positive refracting power. The first lens or the third lens is made of glass. The optical lens receives the image beam from the light incidence side. The image beam forms a stop on the light exit side, and the image beam forms the minimum beam cross-section at a location of the stop.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage
• G02B 9/34 - Objectifs optiques caractérisés à la fois par le nombre de leurs composants et la façon dont ceux-ci sont disposés selon leur signe, c. à d. + ou — ayant uniquement quatre composants
• G02B 27/01 - Dispositifs d'affichage "tête haute"

Abrégé

A projection device, including an illumination system, a first light valve, a light modulation module, and a projection lens, is provided. The illumination system is configured to provide an illumination light beam. The first light valve is disposed on a transmission path of the illumination light beam to convert the illumination light beam into an image light beam. The light modulation module is replaceably disposed in the projection device and includes a second light valve located on the transmission path of the illumination light beam to modulate a grayscale value of the illumination light beam and reflect the illumination light beam to the first light valve. The light modulation module is located between the illumination system and the first light valve. The projection lens is disposed on a transmission path of the image light beam to project the image light beam out of the projection device.

Classes IPC  ?

• H04N 5/74 - Dispositifs de projection pour reproduction d'image, p.ex. eidophor
• G03B 21/20 - Boîtes à lumière

Abrégé

A backlight module including a first light guide plate, a first light source, a diffusor, a second light guide plate, a second light source, a viewing angle control film, and a first prism sheet is provided. The diffusor is disposed on one side of a first light emitting surface of the first light guide plate. The second light guide plate is disposed on one side of a first bottom surface of the first light guide plate. A second light emitting surface of the second light guide plate faces the first bottom surface. The second light source is disposed on one side of a second light incident surface of the second light guide plate. The viewing angle control film is disposed between the first light guide plate and the second light guide plate. The first prism sheet is disposed between the viewing angle control film and the first light guide plate.

Classes IPC  ?

• G02F 1/13357 - Dispositifs d'éclairage
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A light source module includes a light guide plate, a light-emitting element, and first and second prism sheets. One of the light-emitting surface and the bottom surface of the light guide plate has strip-shaped microstructures. The bottom surface has bottom microstructures, and the angle between the first surface of each bottom microstructure and the bottom surface is 1° to 17°. The first prism sheet is disposed on the light-emitting surface and between the light-emitting surface and the second prism sheet and includes first prism rods. The second prism sheet includes second prism rods. The aspect ratio of the strip-shaped microstructure is greater than 0.2. The angle between the maximum luminance direction of the light from the light-emitting surface and the normal direction of the light-emitting surface is less than 70°. The light-emitting angle range is less than 40°. A display device including the light source module is also provided.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

An image display system and a display method are provided. The image display system includes at least one image display device including an image decoding circuit, a 3D image processing circuit, and an image playback circuit. The image decoding circuit decodes a 3D image signal from an external signal source to obtain and output an image data signal and a synchronization signal. The 3D image processing circuit performs 3D image processing on the image data signal and the synchronization signal to generate a processed image data signal and a processed synchronization signal. The viewing angle switching circuit generates a processed viewing angle switching signal according to the processed synchronization signal. The image playback circuit generates a playback image signal according to the processed image data signal. The image display system generates a 3D image according to the processed viewing angle switching signal and the playback image signal.

Classes IPC  ?

• H04N 13/398 - Leur synchronisation; Leur commande
• H04N 13/106 - Traitement de signaux d’images
• H04N 13/344 - Affichage pour le visionnement à l’aide de lunettes spéciales ou de visiocasques avec des visiocasques portant des affichages gauche et droit

Abrégé

The disclosure provides a damping structure and a projection structure having the damping structure, and the damping structure has improved damping effects and occupies a smaller disposition space. The projection device includes a casing and a speaker. The damping structure includes an extension body and an elastic buffer. The extension body extends from the speaker and has multiple columnar parts. The elastic buffer is disposed between the extension body and the casing, and the elastic buffer has a central part and multiple holes. The central part is limited to the casing. The holes surround the central part. The columnar parts respectively pass through the holes to connect the elastic buffer to the extension body. A gap is formed between a section of the elastic buffer and the extension body to provide a space for relative displacement of the section and the extension body.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A projection system and a control method are provided. The control method includes the following. A projected image is projected on a projection area by a projection device. The projected image is captured in a detection area to generate a captured image by an image capturing device. The detection area includes the projection area. The captured image is received, a virtual frame is generated around the projection area in the captured image, and pixel values of the virtual frame are analyzed to determine whether an object enters the projection area by a processing device. The projection device is controlled to perform a protection operation by the processing device in response to determining that the object enters the projection area.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G06T 7/11 - Découpage basé sur les zones

Abrégé

Provided is a multi-axis force sensing device, including a central portion, an outer ring portion, multiple measurement shafts, and multiple sensing groups. The outer ring portion surrounds the central portion. The measurement shafts are respectively connected between the central portion and the outer ring portion. The measurement shafts are equally disposed on an outer side of the central portion. A first surface and a second surface of each measurement shaft are respectively disposed with one of the sensing groups. Each sensing group includes a first strain sensing element and a second strain sensing element. The first strain sensing element is disposed on a first central line of symmetry on the first surface or on a second central line of symmetry on the second surface. The second strain sensing element is disposed on the first surface or the second surface.

Classes IPC  ?

• G01L 19/04 - Moyens pour compenser les effets des variations de température
• G01L 1/22 - Mesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c. à d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
• G01L 3/14 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple est autre qu'un arbre élastique en torsion

Abrégé

A filter element and a projection device are provided. The filter element is configured on the transmission path of at least one light beam, and includes a substrate and a film. The film is located on a surface of the substrate, and includes a first area and a second area. The first area includes a center, corresponding to the central axis of the at least one light beam. The distance between the second area and the center of the first area is greater than the distance between any point in the first area and the center. The average thickness of the second area of the film is greater than the average thickness of the first area of the film. The filter element of the disclosure may still have a similar filter effect when the incident angle is relatively large.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

Provided is a projection apparatus including a light valve, a projection lens, and an illumination system including at least one light-source module, at least one focusing lens, and at least one diffusing element. The excitation beams pass through from the at least one light-source module to the focusing lens and the diffusing element sequentially to form an illumination beam. The maximum width of a first light spot formed by the excitation beams on a light-exit surface of the focusing lens is a first width. The maximum width of a second light spot formed on a light-exit surface of the diffusing element is a second width. The maximum width of a third light spot formed by the illumination beam on a light-incident surface of the light valve is a third width. The first width is greater than the second width, and the second width is greater than the third width.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A lens module includes a lens fixing device and a base. The lens fixing device includes: a lens holder, a lens, a plurality of elastic sheets, and a shielding sheet. The lens is assembled on the lens holder. The plurality of elastic sheets is locked on the lens holder and pressed around an edge of the lens. The shielding sheet is arranged on at least one of the plurality of elastic sheets, and is located on a transmission path of an excitation light beam to prevent the excitation light beam from directly irradiating the at least one of the plurality of elastic sheets. The lens holder is assembled on the base.

Classes IPC  ?

• G02B 7/02 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

Provided is a LED light board including a substrate, a plurality of LEDs, and a colloid layer. The substrate has a plurality of adjacent light emission areas. These LEDs are respectively disposed on these light emission areas. The colloid layer is disposed on these light emission areas. These LEDs are disposed between the substrate and the colloid layer, and are covered by the colloid layer. The colloid layer has a plurality of recesses on each light emission area, and these recesses expose an upper surface of the substrate corresponding to these recesses. At least a portion of the recesses on each light emission area are disposed around the corresponding LED.

Classes IPC  ?

• G02F 1/133 - Dispositions relatives à la structure; Excitation de cellules à cristaux liquides; Dispositions relatives aux circuits
• G02F 1/13357 - Dispositifs d'éclairage
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs

Abrégé

An imaging system configured to convert an illumination beam into an image beam includes a first prism including a first surface and a second surface, a second prism, and a light valve. An included angle between the first surface and the second surface is an acute angle. The illumination beam is sequentially transmitted to the first prism, the second prism, and the light valve. The light valve is configured to convert the illumination beam into the image beam, and the image beam is then transmitted to and passes the second prism. A first incident direction of the illumination beam incident on the first prism is perpendicular to a first exit direction of the illumination beam exiting from the first prism. Beam cross-sectional areas of the illumination beam before incident on and after exiting from the first prism are different. A projection apparatus including the imaging system is also provided.

Classes IPC  ?

• G02B 17/08 - Systèmes catadioptriques
• G03B 21/20 - Boîtes à lumière

Abrégé

A projection device includes a housing, a spacer plate, and a heat dissipation module. The spacer plate is disposed in the housing to divide the housing into a first space and a second space. The heat dissipation module includes a radiator, a heat dissipation plate, a driving element, and a tube. The radiator is located in the first space, and the heat dissipation plate is located in the second space. The first space has a first air inlet and a first air outlet. A first cooling air flow enters the first space from the first air inlet, flows through the radiator, and is discharged from the first air outlet. The second space has a second air inlet and a second air outlet. A second cooling air flow enters the second space from the second air inlet, and is discharged from the second air outlet.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

An optical assembly includes a first prism and a second prism. The first prism has a first surface. The first surface includes a first optical region. The second prism has a second surface. The first and the second surface are disposed facing each other. The second surface includes a second optical region, in which on a first reference plane, an orthographic projection of the first optical region overlaps an orthographic projection of the second optical region, and the first reference plane is substantially parallel to the first surface or the second surface. When the optical assembly is at a first temperature, at least one of the first optical region and the second optical region is concave, and a vertical distance between the first and the second optical region gradually decreases from a first center point of the first optical region to a first edge of the first optical region.

Classes IPC  ?

• G02B 7/18 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour miroirs
• G03B 21/28 - Réflecteurs dans le faisceau de projection

Abrégé

A light source fixing assembly includes an optical engine housing, a circuit board, a light emitting element, a flexible circuit board, a fixing element and an abutting element. The circuit board has a bearing surface, a first fixing region and a first conductive bonding region. The first bonding region and the light emitting element are on the bearing surface. The flexible circuit board is between the optical engine housing and the circuit board. The flexible circuit board has a first surface, a second surface opposite to the first surface, and a second fixing region. The second surface has a second bonding region. The fixing element fixes the circuit board and the flexible circuit board onto the optical engine housing. The abutting element abuts against the flexible circuit board and corresponds to the second bonding region, so that the first bonding region is electrically connected to the second bonding region.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

A heat dissipation module for dissipating heat from a heat source of a projection apparatus includes a thermoelectric module, a heat dissipation member, an absorption material, a transmission member and an insulating material. The thermoelectric module is disposed between the heat source and the heat dissipation member and has a cold side and a hot side opposite to each other, where the cold side is for dissipating heat from the heat source, and the hot side contacts with the heat dissipation member. The transmission member has a connection end and an evaporation end, wherein the connection end connects with the absorption material. The insulating material covers the absorption material and the transmission member. A projection apparatus uses the heat dissipation module. The heat dissipation module and the projection apparatus can prevent possibility of condensed moisture flowing into the system to damage electronic devices, and therefore have higher structural reliability.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

A projection position guiding method adapted to a projection system is provided. The projection system includes a projection target, an image capturing device and a projector. The projection position guiding method includes: projecting a projection content onto the projection target by the projector to generate a projection image, the projection content includes multiple positioning grid points arranged at intervals; capturing the projection target by the image capturing device to generate a captured image, and the captured image includes at least part of the projection image; and determining whether the positioning grid points satisfy multiple recognizable conditions according to the projection image in the captured image, when it is determined that the positioning grid points include at least one unrecognizable grid point that does not satisfy at least one of the recognizable conditions, adjusting a color of the at least one unrecognizable grid point in the projection content.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

An illumination system including a light source, a wavelength conversion device and a first light-uniforming element is provided. The light source emits an excitation beam. A light wavelength conversion region and a transmission region of the wavelength conversion device sequentially insert on the transmission path of the excitation beam at different time periods. When the light wavelength conversion region inserts on the transmission path of the excitation beam, a conversion beam is provided. When the transmission region inserts on the transmission path of the excitation beam, a non-conversion excitation beam is provided. The non-conversion excitation beam and the conversion beam penetrate the first light-uniforming element to form an illumination beam. The conversion beam is reflected for X time(s) and the non-conversion excitation beam is reflected for Y time(s) on the transmission path between the wavelength conversion device and the first light-uniforming element. A projection apparatus is also provided.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A focus identification method adaptable for a focus identification system is provided. The focus identification method includes: capturing a projection picture to generate a captured picture; dividing the captured picture into a plurality of image regions; calculating a plurality of sharpness values corresponding to the plurality of image regions respectively according to image data of the plurality of image regions; and displaying the plurality of sharpness values on the plurality of corresponding image regions respectively to generate a first focus identification picture. Moreover, the disclosure further discloses a focus identification system applying the focus identification method. The focus identification method and the focus identification system using the same in the disclosure may improve the remote maintenance efficiency.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A backlight module includes a light guide plate, a light source, multiple first optical microstructures, and multiple second optical microstructures. The first optical microstructures and the second optical microstructures are disposed on the bottom surface of the light guide plate. Each of the first optical microstructures has a first light receiving surface facing the light source. A backlight module includes a light guide plate, a light source, multiple first optical microstructures, and multiple second optical microstructures. The first optical microstructures and the second optical microstructures are disposed on the bottom surface of the light guide plate. Each of the first optical microstructures has a first light receiving surface facing the light source. Each of the second optical microstructures has a second light receiving surface facing the light source. A first angle is included between the first light receiving surface and the bottom surface. A second angle is included between the second light receiving surface and the bottom surface. The second angle is different from the first angle. A display apparatus adopting the backlight module is also provided.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A projection apparatus, including an illumination system, a light valve, a first movable reflector, a first projection lens, a second projection lens, and a driving module, is provided. The illumination system is configured to provide an illumination light beam. The driving module is connected to the first movable reflector and is configured to drive the first movable reflector to move. The projection apparatus has a first projection mode and a second projection mode for being performed. In the first projection mode, the driving module controls the first movable reflector to move to a first position. In the second projection mode, the driving module controls the first movable reflector to move to a second position, and the first movable reflector is not located on a transmission path of an image light beam.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G03B 21/28 - Réflecteurs dans le faisceau de projection
• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G02B 5/04 - Prismes

Abrégé

A lighting module is configured to provide a lighting beam and includes a light source providing an excitation beam, a rotating wheel module disposed on a transmission path of the excitation beam, and a first airflow generator. The rotating wheel module includes driving blades disposed at an interval. Any two adjacent driving blades form an airflow channel. The first airflow generator generates a first airflow that flows through the airflow channels of the driving blades to drive the rotating wheel module to rotate. At least a part of the light source is disposed on a flow path of the first airflow. With the foregoing design, the rotating wheel module can be passively rotated by the first airflow without a driver. Since a driver is omitted, the lighting module has a smaller size and greater design flexibility, and the rotating wheel module also has a larger usable area.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G02B 26/00 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables
• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

An optical structure film and a light source module are provided. The optical structure film includes multiple optical unit microstructures. Each of the optical unit microstructures has four side surfaces and an inwardly concave beam splitting surface. The beam splitting surface is respectively connected to the side surfaces, and the beam splitting surface has four endpoints when viewed from a front viewing angle. Connection lines of the four endpoints form a rectangle. The beam splitting surface includes at least one beam splitting curved surface. A junction of the at least one beam splitting curved surface and one of the four side surfaces is a first line segment. A projection of a midpoint of an edge of the rectangle on the beam splitting surface overlaps with a relative extreme point of the first line segment.

Classes IPC  ?

• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage

Abrégé

A projection device includes: an illumination system providing an illumination beam; a light valve arranged on a transmission path of the illumination beam and converting the illumination beam into an image beam; a projection lens arranged on a transmission path of the image beam and projecting the image beam out of the projection device; a first actuating module connecting and moving a first element, so that the image beam shifts back and forth along at least one of the first, second, and third directions; and a second actuating module connecting and moving a second element, so that the image beam shifts back and forth along at least one of the first, second, and third directions. The first and second directions are perpendicular. The third and first directions form an angle of 45 degrees, so do the third and second directions. The first and second elements are different.

Classes IPC  ?

• G03B 5/00 - Réglage du système optique relatif à l'image ou à la surface du sujet, autre que pour la mise au point présentant un intérêt général pour les appareils photographiques, les appareils de projection ou les tireuses
• G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A control method of a light field display is provided. A control unit inputs a focal length signal to a zoom lens, so that the zoom lens is periodically switched among corresponding specific focal lengths. The control unit inputs a corresponding display signal to a display unit of a display module according to one of the specific focal lengths, and the display module generates one of image lights, the image lights respectively have different imaging distances corresponding to the specific focal lengths after passing through the zoom lens. The control unit inputs a corresponding response time signal to the display module according to one of the specific focal lengths, the one of image lights emitted by the display module passes through the zoom lens within one of response times, and the light field display projects the one of image lights to form an image at the corresponding imaging distance.

Classes IPC  ?

• H04N 13/398 - Leur synchronisation; Leur commande
• G02B 30/10 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p.ex. des effets stéréoscopiques en utilisant des méthodes d'imagerie intégrale

Abrégé

A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. An included angle between an extending direction of prism structures of each of two optical brightness enhancement films of the backlight module and a viewing angle control direction of the display apparatus is less than 45 degrees. A method of driving the display apparatus is provided.

Classes IPC  ?

• G02F 1/13357 - Dispositifs d'éclairage
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• F21V 8/00 - Utilisation de guides de lumière, p.ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage
• G02F 1/13363 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs Éléments à biréfringence, p.ex. pour la compensation optique
• G02F 1/1337 - Orientation des molécules des cristaux liquides induite par les caractéristiques de surface, p.ex. par des couches d'alignement

Abrégé

A wavelength conversion module, including a substrate, a wavelength conversion member, and a fixing ring, is provided. The substrate has an annular groove. The wavelength conversion member is disposed in the annular groove of the substrate. The fixing ring is disposed on the substrate and is configured to press on an inner region and an outer region of the annular groove and a portion of the wavelength conversion member to expose another portion of the wavelength conversion member and fix the wavelength conversion member on the substrate. In addition, a projection device, applying the wavelength conversion module, is also provided. The wavelength conversion module of the present invention and the projection device applying the wavelength conversion module have better structural reliability and assembly flexibility.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs

Abrégé

A projector device including a first body, a second body that the first body stacked on, a rotating shaft connecting the first and the second bodies, a projection lens module arranged in the first body and having a projection optical axis not parallel to the rotating shaft, an optical engine module arranged in the first body for providing a projection beam along the projection optical axis, a heat sink, and a fan is provided. The rotating shaft is located on a virtual plane parallel to the projection optical axis. The heat sink and the fan are arranged in the first body and beside the optical engine module. The fan and at least one-half of the heat sink are located on a first side of the virtual plane, and the projection lens module is located on a second side opposite to the first side of the virtual plane.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

A light homogenizing element comprising a light incident surface, a light-emitting surface and a plurality of side surfaces is provided. The plurality of side surfaces are connected between the light incident surface and the light-emitting surface, the light-emitting surface is not parallel to the light incident surface, and the light-emitting surface includes a first side and a second side opposite to the first side, and the first side is not parallel to the second side. A projection device using the light homogenizing element is also provided.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A projection lens module including a lens assembly, a reflector, a housing, a light shading structure, a fan, and an air guiding element is provided. The reflector is disposed on an optical axis of the lens assembly. The reflector includes a reflective surface and a shady surface. The housing covers the reflector, and includes a first part and a second part. The first part and the reflective surface of the reflector jointly define an enclosed space, and the second part and at least a part of the shady surface of the reflector jointly define an air guiding space. The light shading structure overlaps the air outlet in a direction of the optical axis. The fan is disposed outside the housing. The air guiding element connects the fan and the housing, and guides the wind blown by the fan to the shady surface, and the wind leaves from the air outlet.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière
• G03B 21/16 - Refroidissement; Prévention de la surchauffe

Abrégé

A wavelength conversion module including a substrate, a wavelength conversion layer and at least one wing is provided. The substrate has a wavelength conversion area, a non-wavelength conversion area and at least one through hole. The through hole penetrates through the substrate and is located in the non-wavelength conversion area. The wavelength conversion layer is disposed in the wavelength conversion area of the substrate. The wing is disposed in the non-wavelength conversion area of the substrate. When the substrate reaches a first temperature range, the wing closes the through hole. When the substrate reaches a second temperature range, at least one airflow channel is formed between the wing and the through hole. The wavelength conversion module of the invention and the projection device using the same effectively reduce a temperature of the wavelength conversion module, and thus have better reliability.

Classes IPC  ?

• G03B 21/20 - Boîtes à lumière

Abrégé

A projection lens module includes a lens assembly, a reflector arranged beside the lens assembly, a housing assembly covering the reflector, and a buffer. The reflector includes a reflecting surface and a back surface opposite to each other; the reflecting surface faces the lens assembly to reflect a light beam passing through the lens assembly. The housing assembly includes a flow channel frame, an inner surface. The flow channel frame is arranged on the inner surface and protrudes toward the back surface. The buffer is sandwiched between the flow channel frame and the back surface. A flow channel is formed between the flow channel frame and the back surface and communicates with the air inlet and the air outlet.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G02B 7/02 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles
• G02B 17/00 - Systèmes avec surfaces réfléchissantes, avec ou sans éléments de réfraction

Abrégé

A projector includes a base, an optical engine assembly, a lens assembly, a connector, and a buffer. The base includes a primary plate body and a first connection part connected to the primary plate body. The optical engine assembly is configured to provide an image beam. The lens assembly is arranged above the base and located on a transmission path of the image beam. The connector includes a first fixing part and a second connection part connected to the first fixing part. The first fixing part is fixed to the lens assembly, one of the first connection part and the second connection part is a slot, and the other is movably inserted into the slot. The buffer is arranged in the slot, and the first connection part is connected to the second connection part through the buffer. The projector may effectively prevent lens vibration.

Classes IPC  ?

• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
• G03B 21/54 - Accessoires

Abrégé

An interactive rear projection system including a projection screen, a projection optical engine, an input device and a controller is provided. The projection optical engine emits a projection beam which is projected on the projection screen. The input device includes a sensor and a first light source both disposed on a first side of the projection screen. The controller is electrically connected to the projection optical engine, the sensor, and the first light source and controls the first light source to project a first beam toward the projection screen. When an object approaches a second side of the projection screen, the sensor senses a light spot generated by the first beam diffusely reflected by the object and recognizes a position of the object or a position where the object touches the projection screen according to the light spot.

Classes IPC  ?

• G03B 21/56 - Ecrans de projection
• G03B 21/10 - Projecteurs avec écran incorporé ou juxtaposé

Abrégé

A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. A first absorption axis of the first polarizer disposed between the backlight module and the first electrically-controlled element is perpendicular to a second absorption axis of the second polarizer disposed between the first and second electrically-controlled elements. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. A method of driving the display apparatus is provided.

Classes IPC  ?

• G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
• G02F 1/1347 - Disposition de couches ou de cellules à cristaux liquides dans lesquelles un faisceau lumineux est modifié par l'addition des effets de plusieurs couches ou cellules
• G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
• G02F 1/13363 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs Éléments à biréfringence, p.ex. pour la compensation optique
• G02F 1/137 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides caractérisés par l'effet électro-optique ou magnéto-optique, p.ex. transition de phase induite par un champ, effet d'orientation, interaction entre milieu récepteur et matière additive ou diffusion dynamique
• G09G 3/36 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante utilisant des cristaux liquides
• G02F 1/1337 - Orientation des molécules des cristaux liquides induite par les caractéristiques de surface, p.ex. par des couches d'alignement

Abrégé

An optical engine module including a housing, an optical element, a positioning member, and a heat dissipation assembly is provided. The optical element and the positioning member are arranged in the housing. The positioning member abuts and positions the optical element. The heat dissipation assembly is coupled to the positioning member. The heat dissipation assembly absorbs heat generated by the optical element through the positioning member and transmits the heat outside the housing. A projection device is also provided.

Classes IPC  ?

• G03B 21/16 - Refroidissement; Prévention de la surchauffe
• G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails

Abrégé

A projection device and a projecting method are provided. The projection device includes a controller, a light engine, and a storage device. The storage device stores gamma correction curves and a predetermined amount. The controller receives display information of an image. The display information includes pixel information. The controller is configured to: set gray level regions and determine which gray level region does each pixel information fall into according to a gray level of the pixel information; calculate a pixel amount of the pixel information fallen into each gray level region; and when one of the pixel amount exceeds the predetermined amount, select a selected gamma correction curve from the gamma correction curves and adjust the display information according to the selected gamma correction curve to generate adjusted display information. The light engine is electrically coupled to the controller, receives the adjusted display information, and projects an adjusted image accordingly.

Classes IPC  ?

• H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
• G09G 3/20 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice
• G09G 3/00 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques