Abstract: A transmissive liquid crystal panel includes a pixel region where a plurality of pixels are arrayed, a liquid crystal layer configured to modulate light for the plurality of pixels, an incident section configured to make the light incident on liquid crystal layer, an emission section configured to emit, as image light, the light modulated by liquid crystal layer, and a vapor chamber including an opening section corresponding to pixel region, a heat receiving section provided around the opening section, and a heat radiating section configured to radiate heat received by heat receiving section, the vapor chamber vaporizing, with the heat received by heat receiving section, a coolant in a liquid phase encapsulated on an inside of the vapor chamber and radiating, with the heat radiating section, heat of the coolant in a gas phase to thereby condense the coolant in the gas phase into the coolant in the liquid phase.

Abstract: An image formation unit includes a first panel module having a first liquid crystal panel output blue image light, a second panel module having a second liquid crystal panel output green image light, and a third panel module having a third liquid crystal panel output red image light, wherein the first panel module includes a first heat diffuser which transfers heat with the first liquid crystal panel, a first Peltier element which transfers heat to and from the first heat diffuser, and a first cooler which in heat transfers with the first Peltier element, and the second panel module includes a second heat diffuser which transfers heat with the second liquid crystal panel, a second Peltier element which transfers heat to and from the second heat diffuser, and a second cooler which in heat transfers with the second Peltier element.

Abstract: A light transmissive optical element module includes an optical device having a light transmissive optical element that causes light incident thereon to exit and a heat transfer surface via which heat of the light transmissive optical element is transferred, a heat diffuser that includes a contact section in contact with the heat transfer surface and an extension extending from the contact section and diffuses the received heat, a thermoelectric conversion device that has a first surface in contact with the extension and a second surface disposed at a side opposite from the first surface, absorbs via the first surface the heat transferred from the extension, and dissipates the absorbed heat via the second surface, and a cooler in contact with the second surface.

Abstract: A temperature adjustment apparatus adjusting a temperature of a liquid crystal panel module, includes a thermoelectric conversion device in contact with the liquid crystal panel module, and a control unit controlling the thermoelectric conversion device, wherein the liquid crystal panel module includes a thermal diffuser having a contact portion in contact with a liquid crystal panel and an extending portion extending from the contact portion and diffusing received heat, the thermoelectric conversion device has a first surface in contact with the extending portion, and a second surface at an opposite side to the first surface, and the control unit is configured to execute warming processing of supplying heat to the thermal diffuser using the thermoelectric conversion device and warming the liquid crystal panel by the heat diffused in the thermal diffuser, and cooling processing of absorbing the heat of the liquid crystal panel transferred to the thermal diffuser.

Abstract: A light modulation device having a pixel arrangement region in which a plurality of pixels are arranged includes a first substrate, a second substrate disposed to be opposed to the first substrate via a liquid crystal layer, and a cooling member disposed on the opposite side of the first substrate with respect to the second substrate and thermally connected to the second substrate. The cooling member includes a hollow space in which working fluid is encapsulated and changes the working fluid in a liquid phase to the working fluid in a gas phase to cool the liquid crystal layer via the second substrate.

Abstract: A wavelength conversion device includes a rotating body having a disk-like shape, a wavelength converter disposed in a portion at circumferential edge side of the rotating body so as to form a ring-like shape centering on a rotational axis of the rotating body, and a motor configured to rotate the rotating body, wherein the rotating body includes a vapor chamber, the vapor chamber includes a sealed container configured to contain a working fluid changing in phase between a vapor phase and a liquid phase, the sealed container includes a heat receiver which is arranged in an outer circumferential part of the sealed container, and which is configured to receive heat of the wavelength converter, and a heat dissipater which is arranged at the rotational axis side of the heat receiver, and which is configured to release the heat received by the heat receiver.

Abstract: A transmissive liquid crystal panel includes a pixel region where a plurality of pixels are arrayed, a liquid crystal layer configured to modulate light for each of the pixels, an incident section configured to make the light incident on the liquid crystal layer, an emission section configured to emit, as image light, the light modulated by the liquid crystal layer, and a vapor chamber including an opening section corresponding to the pixel region, a heat receiving section around the opening section, and a heat radiating section configured to radiate heat received by heat receiving section, the vapor chamber vaporizing, with the heat received, a coolant in a liquid phase encapsulated on an inside of the vapor chamber and radiating, with the heat radiating section, heat of the coolant in a gas phase to thereby condense the coolant in the gas phase into the coolant in the liquid phase.

Abstract: A projector includes a light source device, a homogenization optical element, a polarization conversion element, a liquid crystal panel, an incident side polarization plate, an exit side polarization plate, a projection optical system, a first housing, a second housing, a first heat-transfer section, a second heat-transfer section, a first fan configured to feed an air current toward the first heat-transfer section and the second heat-transfer section, and a first duct in which the first heat-transfer section and the second heat-transfer section are disposed.

Abstract: A light modulation device having a pixel arrangement region in which a plurality of pixels are arranged includes a first substrate, a second substrate disposed to be opposed to the first substrate via a liquid crystal layer, and a cooling member disposed on the opposite side of the first substrate with respect to the second substrate and thermally connected to the second substrate. The cooling member includes a hollow space in which working fluid is encapsulated and changes the working fluid in a liquid phase to the working fluid in a gas phase to cool the liquid crystal layer via the second substrate.

Abstract: A projector the present disclosure includes: a first liquid crystal panel output image light of a first color and image light of a second color in time series; a second liquid crystal panel output image light of a third color; and a light source devicesupplied first colored light, second colored light, and third colored light, and having a solid light source emitted the first colored light and a wavelength conversion element. A ratio between output periods of the first colored light and the converted light is the same as a ratio between output periods of the image light of the first color and the image light of the second color at a frame rate, and an output intensity of the first colored light is set according to an output intensity of the converted light based on the ratio between the output periods of the first colored light and the converted light.

Abstract: A projector according to the present disclosure includes: a light source device configured to output blue light and fluorescence in time series; a wavelength selection element configured to transmit or reflect the blue light, separate the fluorescence into different colored light, transmit light of one color of the different colored light, and reflect the other colored light; a first liquid crystal panel configured to receive the blue light and the light of one color and output blue image light and image light of one color; a second liquid crystal panel configured to receive the other colored light and output image light of another color; an optical element configured to output the blue image light, the image light of the one color, and the image light of the other color to a common optical path; and a projection optical system.

Abstract: A display device includes a base having a first surface, and a second surface at an opposite side to the first surface, a reflective light modulation element disposed on the first surface, and electrically coupled to the base, a drive circuit board having a third surface electrically coupled to the second surface, and a fourth surface at an opposite side to the third surface, and configured to drive the reflective light modulation element, a vapor chamber having a heat receiver, a heat radiator, and a fluid housing chamber, and a radiation member coupled to the heat radiator in a thermally-transferable manner, wherein the heat receiver has a first area opposed to the second surface, and a second area opposed to the fourth surface, and the first area projects toward the base side from the second area, and is coupled to the second surface in a thermally-transferable manner.

Abstract: A light source apparatus according to an aspect of the present disclosure includes a circuit substrate that has a first surface and a second surface provided at the side opposite from the first surface and has a first opening passing through the first and second surfaces, a first light emitter that is electrically coupled to the circuit substrate and emits first light having a first wavelength band, and a thermal diffuser provided at the second surface of the circuit substrate, and the first light emitter is provided at the thermal diffuser exposed in the first opening.

Abstract: A heat diffuser according to an aspect of the present disclosure includes a body section including a heat receiver that receives heat from a heat source, a heat dissipater that dissipates the heat received by the heat receiver, and a housing compartment that houses and seals an operating fluid. The operating fluid is water. The housing compartment is made of a metal material having specific gravity smaller than that of copper. The inner surface of the housing compartment is covered with a coating layer. The coating layer is a resin coat containing any of alkyd resin, silicone resin, ethylene-chlorotrifluoroethylene copolymer resin, and tetrafluoroethylene-perfluoro alkyl vinyl ether copolymer resin. The heat from the heat receiver vaporizes the operating fluid in the liquid form, and the heat dissipation performed by the heat dissipater condenses the operating fluid.

Abstract: A wavelength conversion device includes a rotating device, a substrate rotated by the rotating device, a wavelength conversion element, and a first cooling device including, on an inside, a space in which working fluid is encapsulated, the first cooling device cooling the wavelength conversion element. The first cooling device is disposed in a position corresponding to the wavelength conversion element. The space extends from an outer edge side of the substrate to a rotation axis side. The first cooling device includes an evaporator and a condenser which are provided in the space. The evaporator includes a liquid retaining part configured to retain the working fluid in a liquid phase. The liquid retaining part is provided at the outer edge side in the space and disposed in the position corresponding to the wavelength conversion element.

Abstract: A phosphor wheel includes a wheel element including a disk-shaped substrate having a first surface and a second surface opposite from the first surface, an annular phosphor disposed at the first surface on a circle around the center of the substrate, and a plurality of fins disposed at the second surface and extending outward from the side facing the center of the substrate, and a balance corrector that corrects nonuniformity of the rotational balance of the wheel element, and the balance corrector includes a first balancer and a second balancer that is lighter than the first balancer.

Abstract: A projector includes a light source device, a homogenization optical element, a polarization conversion element, a liquid crystal panel, an incident side polarization plate, an exit side polarization plate, a projection optical system, a first housing, a second housing, a first heat-transfer section, a second heat-transfer section, a first fan configured to feed an air current toward the first heat-transfer section and the second heat-transfer section, and a first duct in which the first heat-transfer section and the second heat-transfer section are disposed.

Abstract: An optical element unit according to an aspect of the present disclosure includes an optical element wheel that includes a heat dissipation member provided at one surface of a wheel substrate, a hosing including an outer circumferential wall that covers the outer circumference of the optical element wheel, and an opening formed at part of the outer circumferential wall, the housing capable of housing the optical element wheel, a first duct which is provided at the opening of the housing and via which the airflow generated by the optical element wheel is exhausted out of the housing, a heat exchanger which is disposed at the outlet of the first duct and to which the airflow exhausted via the outlet flows, and a second duct that guides the airflow having flowed through the heat exchanger to the heat dissipation member of the optical element wheel.

Abstract: A projector according to the present disclosure includes: a light source unit; an image forming portion including a light modulation panel; a panel fan configured to flow an air flow to the light modulation panel; an image forming unit including the image forming portion and the panel fan that are housed in a case; a projection optical unit configured to project the image light generated by the image forming portion; and a vapor chamber provided at the light modulation panel, the vapor chamber including a heat receiving portion that receives heat generated in the light modulation panel and a heat dissipating portion that dissipates the heat received by the heat receiving portion, the vapor chamber being configured to vaporize a liquid refrigerant by the heat from the heat receiving portion and condense the refrigerant by the heat dissipation from the heat dissipating portion.

Abstract: A projector according to the present disclosure includes: a light source unit; an image forming portion including a light modulation panel; a projection optical unit; a panel fan configured to flow an air flow to the light modulation panel; a first heat exchanger; an image forming unit housing the image forming portion, the first heat exchanger, and the panel fan arranged in order in a case thereof; a second heat exchanger; an exterior housing housing at least the light source unit, the image forming unit and the second heat exchanger to constitute an exterior. The light source unit is disposed on one side of a first direction with respect to the image forming unit in the exterior housing, and the second heat exchanger is disposed on the other side of the first direction with respect to the image forming unit in the exterior housing.