Abstract: An image projection apparatus includes a light irradiation device configured to irradiate a laser beam, an optical scan device configured to deflect the laser beam to make an optical scan, and project an image on a display region, an optical sensor arranged outside the display region, and including a first light receiving region and a second light receiving region that are arranged at different positions along a vertical scanning direction of the optical scan, and a deflection angle controller. The deflection angle controller corrects a deflection angle in the vertical scanning direction of the optical scan device, based on a number of times the laser beam is detected by the first light receiving region and a number of times the laser beam is detected by the second light receiving region.

Abstract: A projector includes a light source module, a wavelength conversion module, a first collimator lens, a second collimator lens, a dichroic filter and a reflector. The light source module provides a first beam. The wavelength conversion module includes a reflecting plate and a wavelength conversion layer. The dichroic filter reflects a first part of the first beam to form a second beam, and a second part of the first beam can pass or detour the dichroic filter to form a third beam. The second beam is condensed by the first collimator lens and projected onto the wavelength conversion layer to excite a fourth beam. The third beam is condensed by the second collimator lens and projected onto the reflecting plate to reflect a fifth beam. The fifth beam is reflected via the reflector and the dichroic filter to mix with the fourth beam.

Abstract: A light source device according to the present disclosure includes a light source section, a first light separation element for transmitting a part of first light entering the first light separation element irrespective of a polarization component, and reflecting another part of the first light irrespective of a polarization component, a second light separation element for reflecting a part of the first light entering the second light separation element, a diffusion element for diffusing and emitting another part of the first light entering the diffusion element, and a wavelength conversion element for performing wavelength conversion on a part of the first light entering the wavelength conversion element to emit second light, wherein the second light separation element transmits a first polarization component with respect to the second light, and reflects a second polarization component.

Abstract: An illumination module configured for mounting at a vehicle includes at least one illumination source and an optic. The optic is a three dimensional single formed optic that is formed such that, when the illumination source is operated and when the illumination module is disposed at a side of a vehicle, the optic provides projection of an icon, a logo and/or indicia at a ground region at or near the side of the vehicle. The optic includes one of (a) a lens optic configured such that light emitted by the illumination source, when activated, passes through the lens optic to provide projection of the icon, the logo and/or indicia, and (b) a reflector optic configured such that light emitted by the illumination source, when activated, reflects off the reflector optic to provide the selected projection of the icon, the logo and/or indicia.

Abstract: An optical module including a base, an outer frame, an inner frame, a transparent element, two first coil portions, two first magnetic portions is provided. The outer frame is pivoted to the base. The inner frame is disposed in the outer frame. The transparent element is disposed in the inner frame. The first coil portion is disposed between the base and the outer frame. The first magnetic portion is disposed between the base and the outer frame, and each of the two first magnetic portions is spaced with the corresponding first coil portion. When a power supply is adapted to provide a current to the first coil portion, each of the two first coil portions is magnetized and forms an electromagnetic force with magnetic field of the corresponding first magnetic portion, and the electromagnetic forces are adapted to drive the transparent element pivotally swinging relative to the base.

Abstract: The present invention discloses a driving current correction method and apparatus for multiple laser devices, and a laser projector, A specific embodiment of the method includes in projection periods of n-th to (n+m?1)-th pixel points: detecting light intensity information of a combined laser after being combined lasers emitted from in laser devices in a laser source by using a light sensor, and respectively acquiring actual light intensities of combined lasers when the n-th to the (n+m?1)-th pixel points are projected according to an electric signal output by the light sensor, a number of the laser devices in the laser source being m; establishing a system of linear equations with in variables according to a driving current of each laser device and the actual light intensities of the combined lasers when the n-th to the (n+m?1)-th pixel points are projected, and solving a corresponding relation between the driving current of the each laser device and an actual light intensity of the laser emitted from the ea

Abstract: A light source module, a projector using the same and a light source control method are disclosed. The light source module includes a laser light source, a temperature sensor, a light source driver and a controller. The temperature sensor is adjacent to the light source and configured to sense a light source temperature of the laser light source. The controller is configured to: (1) determine whether the light source temperature reaches a first temperature value; (2) if yes, control the light source driver to drive the laser light source to illuminate by a first current; (3) determine whether the light source temperature changes from the first temperature value to a second temperature value different from the first temperature value; and, (4) if yes, control the light source driver to drive the laser light source to illuminate by a second current different from the first current.

Abstract: The present invention provides a projector including a laser module and a lens module, wherein the lens module includes a plurality of lens and a plurality of diffractive optical elements. In the operations of the projector, the laser module is arranged to generate at least one laser beam; each of the lenses is arranged to receive one of the at least one laser beam to generate a collimated laser beam; and the diffractive optical elements correspond to the lenses, respectively, and each of the diffractive optical elements is arranged to receive the collimated laser beam from the corresponding lens to generate an image. The images generated by the diffractive optical elements form a projected image of the projector. By using the projector of the present invention, the projected image may have higher resolution or field of view that is advantageous for the 3D sensing system.

Abstract: A controlled apparatus that operates as a first controlled apparatus, comprises a communication unit configured to communicate with a second controlled apparatus, a detection unit configured to detect a second controlled apparatus having a predetermined relationship with the first controlled apparatus via the communication unit, and a control unit configured to generate a first web page capable of controlling the first controlled apparatus if the detection unit has not detected the second controlled apparatus having the predetermined relationship, and generate a second web page capable of collectively controlling the first controlled apparatus and the second controlled apparatus, if the detection unit has detected the second controlled apparatus having the predetermined relationship.

Abstract: A projection apparatus includes a light valve, a lens module, a distance measuring module, a lens position detection module and a processor. The light valve forms an image beam. The lens module projects the image beam onto a display surface. The distance measuring module detects a distance between the lens module and the display surface to obtain a first distance value. The lens position detection module detects a position of the lens module to obtain a second distance value. The processor receives the first distance value from the distance measuring module, receives the second distance value from the lens position detection module and obtains an effective focus range according to the second distance value.

Abstract: A projector includes a first light source device configured to emit first light having a first wavelength band, a second light source device configured to emit second light having a second wavelength band, a first light modulator configured to modulate the first light, and a second light modulator configured to modulate the second light. The first light source device includes a first light emitting element configured to emit excitation light and a wavelength converter configured to convert the excitation light into the first light. The second light source device includes a second light emitting element configured to emit the second light, a diffuser configured to diffuse the second light, and an optical element having an aspherical surface. The optical element is disposed on an optical path of the second light between the diffuser and the second light modulator and is configured to increase field curvature on the second light modulator.

Abstract: An illumination system and a projection device, including a light emitting module, a light uniforming element, and a beam splitting/combining module, are provided. The light emitting module includes red and blue light elements. The light uniforming element has an optical axis and a light entrance surface. The beam splitting/combining module is disposed on a transmission path of at least one blue light beam, is located between the light emitting module and the light uniforming element, and includes at least one beam splitting element and at least one reflective element. At least one among the red and the blue light beams is reflected by the reflective element and the beam splitting element. The red and blue light beams are transmitted to the light uniforming element in a direction parallel to the optical axis, and a speckle distribution on the light entrance surface is symmetrical with respect to the optical axis.

Abstract: A projector includes a light source, a collimator lens, a wavelength conversion module and a dichroic filter. The light source provides a first beam. The collimator lens has a first portion and a second portion. The wavelength conversion module includes a reflecting plate and a wavelength conversion layer. The wavelength conversion layer is an annular structure disposed on the reflecting plate. The dichroic filter corresponds to the first portion of the collimator lens. The dichroic filter reflects the first beam to project onto the reflecting plate and the wavelength conversion layer. A second beam reflected by the reflecting plate passes through the second portion of the collimator lens. A third beam excited by the wavelength conversion layer passes through the first portion and the second portion of the collimator lens and the dichroic filter.

Abstract: The invention provides an optical module and a projector to which the optical module is applied. The optical module provided in the invention includes a first frame, a second frame, and a light-transmissive plate. The first frame includes at least one first axial part. The first frame is configured to oscillate with the at least one first axial part as a rotation axis. The second frame is disposed in the first frame and includes at least one second axial part. The second frame is connected to the first frame via the at least one second axial part and is configured to oscillate with respect to the first frame with the at least one second axial part as a rotation axis. The light-transmissive plate is disposed in the second frame.

Abstract: A projector light valve module with a liquid lens includes: a structural support, an LCD light valve, and an incident lens, wherein the incident lens is connected to a first end of the structural support; a first cavity is sealed and is formed by the incident lens, the structural support and the LCD light valve, and the first cavity is filled with transparent cooling liquid; similarly, the emergent lens is connected to a second end of the structural support, to form a second cavity and a second liquid lens. The present invention combines heat dissipation and optics, and provides more efficient lighting and better imaging quality through optical and heat dissipation effects of the first and second liquid lenses, thereby achieving better heat dissipation, and better user experience and satisfaction.

Abstract: The invention provides a light source module and a projection device. The projection device includes the light source module, an optical engine module, a heat dissipation module, and a projection lens. The light source module includes a light emitting unit, a carrier, and a noise reduction unit. The light emitting unit is configured for providing a lighting beam. The carrier is configured for fixing the light emitting unit and has an opening, and the light source of the light emitting unit is aligned with the opening. The noise reduction unit is configured to surround at least a part of the light emitting unit. The optical engine module includes a light valve located on a transmission path of the lighting beam and is configured for converting the lighting beam into an image beam. The light source module is located between the optical engine module and the heat dissipation module.

Abstract: An LCD projector optical system includes: an LED light source, a transflective plate, a condensing device, a first focusing lens, a polarization modulation plate, a brightness-increasing polarizing plate, an LCD light valve, a field lens, a reflector, and a projection lens, which are all arranged sequentially along a light travel direction; wherein the transflective plate has a light-transmitting portion and a reflecting portion. Light from the LED light source enters the condensing device from the light-transmitting portion, and then transmitted light and reflected light in illumination light are separated by the brightness-increasing polarizing plate.

Abstract: The invention provides a projection device including a housing, a light source module, an optical engine module, a projection lens, and a plurality of fans. The housing includes at least one air inlet and a plurality of air outlets. The air outlets are respectively located on a first side plate and a second side plate of the housing that are opposite to each other. An airflow direction of the air inlet is not parallel to an airflow direction of the air outlets. The light source module is located closely adjacent to the air inlet. The optical engine module is located on a light transmission path of a light emitted from the light source module. The projection lens is disposed inside the housing and is connected to the optical engine module. The fans are disposed inside the housing and are respectively located closely adjacent to the air outlets.

Abstract: A projector includes a cooler configured to cool a cooling target based on transformation of a refrigerant into a gas. A refrigerant generator of the cooler includes a first blower configured to deliver air to a first portion of a moisture absorbing/discharging member, a first heat exchanger, a heater, a second blower, a circulation path along which the air exhausted from the second blower circulates, and a second heat exchanger provided in the circulation path. The circulation path has a first path along which air after passing through a second portion of the moisture absorbing/discharging member flows into the first heat exchanger and a second path along which air exhausted from the first heat exchanger is delivered to the second portion. The second heat exchanger exchanges heat between the air flowing along the first path and the air flowing along the second path.

Abstract: A wavelength converter according to the present disclosure includes a wavelength conversion layer that has a first surface and a second surface different from the first surface and converts excitation light that belongs to a first wavelength band into fluorescence that belongs to a second wavelength band different from the first wavelength band, a first light transmissive member that has a third surface on which the excitation light is incident and a fourth surface different from the third surface and transmits at least the excitation light, and a first layer provided between the first surface of the wavelength conversion layer and the fourth surface of the first light transmissive member, which are surfaces facing each other. The refractive index of the first light transmissive member is greater than the refractive index of the wavelength conversion layer, and the first layer transmits the excitation light and reflects the fluorescence.