Abstract: A polarization conversion element includes: a polarization separation layer which emits first polarized light among incident light and second polarized light which is different from the first polarized light in different directions, respectively; a color separation layer which reflects first colored light among incident light and transmits second colored light which is different from the first colored light, and reflects the first polarized light and one light ray among the second polarized light emitted from the polarization separation layer in substantially the same direction as the direction of the other polarized light emitted from the polarization separation layer; and a retardation layer which is disposed on an optical path of any of the one polarized light and the other polarized light and converts a polarization direction of incident light.

Abstract: Systems and methods for providing sunlight simulation in a vehicle simulator include a vehicle simulator. The vehicle simulator includes a visual projector configured to generate visual scene images and a bright forward field of view projector mounted with the visual projector, wherein the bright forward field of view projector includes plural light emitting diode (LED) light sources configured to generate a bright forward field of view. The vehicle simulator also includes a projection screen configured to project the visual scene images generated by the visual projector or the bright forward field of view generated by the bright forward field of view projector.

Abstract: A cooling device cools down a wheel having a disc shape. The wheel is hermetically enclosed in an enclosure and rotationally driven about a rotation shaft. The cooling device includes blade members that are disposed on one surface of the wheel, a heat dissipater to which a gas heated by the wheel is blown by the blade members due to rotation of the wheel, and a gas flow definer that is located inside the enclosure, and separates a flow path along which the gas that has been cooled by the heat dissipater flows before being blown to the one surface and a flow path along which the gas that has been blown to the one surface and heated flows.

Abstract: A HUD includes a light source unit 57, a light modulation element 54 that modulates light that is emitted from the light source unit 57, a projection portion that projects the modulated light onto a projection surface, wind guide paths 61 and 62 that guide wind W sent from an air conditioning device 9 of a car 100 to the light source unit 57, the wind guide path 61 that guides the wind W to the light modulation element 54, a shutter 63 for performing blocking and opening of the wind guide paths 61 and 62, and a system control unit 64 that selectively performs control for blocking the wind guide paths 61 and 62 and control for opening the wind guide paths 61 and 62 by controlling the shutter 63.

Abstract: An image display apparatus according to an embodiment of the present technology includes a solid-state light source, an emission unit, and a selection unit. The solid-state light source is capable of emitting first visible light having a predetermined wavelength range. The emission unit includes an illuminant that emits second visible light, the illuminant being excited by the first visible light emitted from the solid-state light source, the second visible light having a wavelength range different from that of the first visible light, the emission unit being capable of emitting combined light including the first and second visible light. The selection unit selects third visible light from the combined light, the third visible light including the first visible light and light in a predetermined part of wavelength range of the second visible light.

Abstract: A method and structure for displaying a simulated 3D image which may be projected utilizing front projectors and two screens, where the front screen may be a rear-projecting screen with a linear polarization film attached and a background screen which may contain a further image which varies in a programmed manner in keeping with the actions being portrayed by images on the front screen.

Abstract: The disclosure describes packaging structures for light field displays and/or light field projectors. An example device package includes a rendering engine configured to receive scene data and generate light field data for a light field, at least one light field projection unit configured to receive the light field data from the rendering engine and output at least a portion of the light field, and at least one internal communication channel operatively coupling the at least one light field projection unit to the rendering engine. The device package may further include a housing containing the rendering engine, the at least one light field projection unit, and the at least one internal communication channel in a single package.

Abstract: The present disclosure provides a projection device, a projection system and a method for adjusting projection brightness of the projection system.

Abstract: This projection-type image display device is provided with: a lamp drive unit that drives a lamp; a lamp voltage detection unit that detects a lamp interelectrode voltage (hereinafter referred to as a lamp voltage); an image correction unit that corrects image qualities of image signals to be supplied to an image display element; and a control unit that controls a correction quantity of the image correction unit on the basis of the lamp voltage detected by means of the lamp voltage detection unit. Consequently, deterioration of visibility of a projection image can be suitably suppressed.

Abstract: A light source which has a housing accommodating a light source lamp and having an exhaust port, a duct, and a fan are provided. The duct has an inlet facing the exhaust port, a branching part which branches air from the inlet, a duct part extending in a first direction orthogonal to an opening plane of the exhaust port, and a duct part extending in a second direction intersecting with the first direction. The fan is arranged in a position for sucking the air circulating through the duct part. The duct part has a plurality of sidewall parts, an opening, and a mesh.

Abstract: An image projection apparatus includes an optical modulation element, a lighting optical unit, a projection unit, and a shifting unit. The optical modulation element generates an image from light emitted from a light source. The lighting optical unit is configured to guide the light emitted from the light source to the optical modulation element. The projection unit projects the image generated by the optical modulation element. The shifting unit relatively shifts the optical modulation element with respect to the lighting optical unit. The shifting unit also generates driving forces to shift the optical modulation element, respectively, in a vertical direction, in a direction of being inclined by a first angle less than 90 degrees with respect to the vertical direction, and in a direction of being inclined by a second angle less than 90 degrees in an opposite side of the first angle.

Abstract: Provided are infrared interactive remote control devices and projection systems using same, which can distinguish an indication state and an interactive control state. A pattern disc rotatable around a rotating shaft is provided in the infrared interactive remote control device. In a normal state, a visible light source works independently, and indication pattern holes in the pattern disc are positioned on an optical path to allow visible light to pass through, so that indication light spots corresponding to the indication pattern holes are formed. When a control button is pressed down, the visible light source and an infrared light source work together, and the pattern disc is driven to rotate, so that the control pattern holes are positioned on the optical path to allow the visible light to pass through, and control light spots corresponding to the control pattern holes are formed to indicate an interactive control state.

Abstract: An image display system includes a projector, a transparent screen, and a polarization adjuster. The projector projects image light. The transparent screen diffuses the image light that has been projected, to display an image. The polarization adjuster adjusts the image light that is to enter the transparent screen so that the image light is p-polarized.

Abstract: A holding mechanism for holding an image display element to a prism includes: a first fixing member fixed to the prism by an adhesive; and a second fixing member, which is fixed to the first fixing member using a screw, and which has the image display element directly or indirectly fixed to the second fixing member. A protruding section is provided at the periphery of a hole to be used for the purpose of fixing using the screw, and at the time of fixing the second fixing member to the first fixing member using the screw, the first fixing member and the second fixing member are directly or indirectly brought into contact with each other at the protruding section such that deformation due to screwing of the screw does not generate within a bonding region of the first fixing member.

Abstract: A projection type display apparatus includes illumination unit that emits a plurality of color lights having a predetermined polarization direction, a plurality of optical path adjustment units that totally reflect the plurality of color lights, respectively, a plurality of optical modulation units that modulates the plurality of color lights totally reflected by the plurality of optical path adjustment units, respectively, to emit a plurality of modulated color lights, a synthesis unit that emits the plurality of modulated color lights emitted from the optical modulation units in a same direction, and a correction unit that is arranged on an optical path between the illumination unit and the synthesis unit and that changes a polarization state of light that entered the correction unit to covert light incident on the synthesis unit into linearly polarized light.

Abstract: A projector used a projection lens to enlarge and project image light generated by image generator. When it is assumed that the on-optical-axis position of a lens surface where the maximum of light ray passage ranges (effective diameter) is minimized in the projection lens is a minimum diameter position, a stop is provided on a lens shifted from the minimum diameter position toward the light exiting side. The lens on which the stop is provided is a lens (for example, fourth lens closest to minimum diameter position) that satisfies 0.8?1??2??1, where ?1 represents the light flux diameter on a surface where the on-axis light flux diameter is maximized, and ?2 is the diameter of the stop.

Abstract: A light source apparatus includes a light source, a substrate provided rotatably around a predetermined axis of rotation, a scattered light generator which is provided on the substrate and on which light from the light source is incident, a pickup lens provided on the light exiting side of the scattered light generator, and a holding member that holds the pickup lens, and at least one of the contour of a surface closest to the substrate among the surfaces of the holding member and the contour of a surface facing the substrate among the surfaces of the pickup lens is located inside the contour of the substrate when viewed in the direction parallel to the axis of rotation.

Abstract: An image display apparatus includes: a transparent board that transmits visible light; a screen that is provided on one surface of the transparent board; a projector that projects an image toward the screen from the other surface side of the transparent board; and a support unit that supports the transparent board from the other surface side. The projector is disposed outside of the space that is enclosed by the transparent board and the support unit.

Abstract: A light source device includes: a plurality of light-emitting elements including a first light-emitting element and a second light-emitting element each of which emits light in a first direction; and a base material including a base portion that extends in a second direction inclined with respect to the first direction. The plurality of light-emitting elements are disposed along the second direction on one side of the base portion.

Abstract: An electronic device includes a movable mirror system to selectively reflect an incident image projection beam traveling along a first path toward a second path different than a first path. The image projection beam displays a corrected image at a first location but would otherwise display an uncorrected image at a second location when the movable mirror system reflects the image projection beam toward the second path. The electronic device also includes an optical correction system having at least one corrective optic element to correct the image projection beam to display a corrected image at the second location when the movable mirror system reflects the image projection beam toward the second path.