Abstract: A projector includes a cooling device cooling a liquid crystal panel. The cooling device includes a heat receiving part receiving heat of the liquid crystal panel, a Peltier device having a heat absorbing part that absorbs the heat of the heat receiving part and a heat generating part that generates heat when the absorbing part absorbs heat, a heat sink provided so that heat may be transferred to the heat generating part, and a heat pipe containing a hydraulic fluid inside, in which heat is transferred by convection of the hydraulic fluid. The heat sink has a stacking part superimposed on the Peltier device and a projecting part projecting from the Peltier device as seen from the Peltier device side, and the heat pipe has an interior part located between the Peltier device and the stacking part and an extending part extending along the projecting part.

Abstract: A projector according to an aspect includes a light source device, a light modulation device adapted to modulate light from the light source device to form image light, a projection optical system adapted to perform tilted projection of the image light input from the light modulation device to display an image, and a guide display section adapted to display a guide image used for fitting the image projected by the projection optical system to a screen, the guide image is provided with a focus adjustment pattern forming area disposed in a central portion in a direction perpendicular to a tilt direction in a peripheral zone on the tilt direction side, and a focus adjustment pattern is formed in the focus adjustment pattern forming area.

Abstract: A phosphor wheel device includes: a phosphor wheel; a motor; and a plurality of blades. The phosphor wheel has: a disc-shaped substrate; and a phosphor disposed on one surface of the substrate in a circumferential direction. The motor rotatably drives the phosphor wheel. The plurality of blades are fixed to the other surface of the substrate so as to be integrally rotated with the phosphor wheel, and extend in a radial direction of the phosphor wheel from an axis of rotation of the motor.

Abstract: A projection apparatus including a micro-electro-mechanical system (MEMS) mirror module and a control unit is provided. The MEMS mirror module drives an image beam to scan along a first direction and a second direction on an imaging region. The control unit is electrically connected to the MEMS mirror module and outputs a driving signal with a corresponding pulse width according to a projection position of the image beam in the second direction of the imaging region. A projection method is also provided.

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: An illumination device includes: an excitation light source that emits excitation light having a first wavelength; and a fluorescent member that includes a fluorescent substance that, when it is irradiated with the excitation light, emits light having a second wavelength longer than the first wavelength, transmits a part of the excitation light and reflects another part of the excitation light, and a first reflective film provided at a side of the fluorescent substance, which is opposite to an excitation light incidence side, the fluorescent member emitting multiplexed light including an excitation light component reflected from the fluorescent substance and the first reflective film and a light component emitted from the fluorescent substance.

Abstract: A projector includes a light source module, an optical engine, a light valve and a projecting lens. The light source module includes light sources, optical fibers and a light integration rod. Each of the light sources provides an illumination sub-beam. Each of the illumination sub-beams transmits to the light integration rod through the corresponding optical fiber, and passes through the light integration rod and emits out to form a first illumination beam. The optical engine includes a phosphor wheel located at a transmission path of the first illumination beam and converting the first illumination beam into a second illumination beam. The light valve is located at a transmission path of the second illumination beam and converts the second illumination beam into an image beam. The projecting lens is located at a transmission path of the image beam and projects the image beam out of the projector.

Abstract: A cooling device includes a heat dissipating unit that is in contact with an object to be cooled and dissipates heat, and an air blowing unit that takes therein air and blows the air to the heat dissipating unit. The heat dissipating unit includes a first stage portion and a second stage portion that have a difference in level therebetween. The air blowing unit includes a first inlet port that takes therein air from outside, and an outlet port that exhausts the taken-in air. The first inlet port faces the first stage portion, and the outlet port faces the second stage portion.

Abstract: An image projection apparatus includes a light source, a color wheel, a controller. The controller controls, in a first mode, electric power supplied to the light source at a timing of a first color filter being irradiated with light from the light source to be a value higher than electric power supplied to the light source at a timing of a second color filter corresponding to a color having lower visibility than a color of the first color filter being irradiated with the light from the light source. Furthermore, the controller controls, in a second mode, the electric power supplied to the light source at the timing of the first color filter being irradiated with the light from the light source to be a value lower than the electric power supplied to the light source at the timing of the second color filter being irradiated with the light.

Abstract: A light source unit emits a plurality of basic light beams of differing colors and a supplemental light beam of the same color as any of the colors of the plurality of basic light beams. A control unit (12), on the basis of an input picture signal that is received as input, supplies a first modulating signal for modulating each basic light beam that accords with the color of each pixel of an image indicated by the input picture signal and a second modulating signal for modulating the supplemental light beam in accordance with the specific color level in each pixel that indicates the degree of similarity between the color of the pixel and, of the colors of the plurality of basic light beams, a prescribed color that differs from the color of the supplemental light beam. Modulation units (108, 109, 110) modulate and emit the basic light beams in accordance with the first modulating signal and modulate and emit the supplemental light beam in accordance with the second modulating signal.

Abstract: The present specification is related to a method for performing multi-projection and a multi-projection system for minimizing a black offset in a multi-projection environment. The present specification provides the method for performing multi-projection comprising estimating the intensity transfer function (ITF) of a plurality of projectors, calculating an optimal black offset threshold for each of the projectors by using each of the ITFs, and applying the optimal black offset threshold to an image projection by each of the projectors.

Abstract: Display devices with high dynamic ranges approaching the limitations of the human eye are discussed herein. High dynamic range projections systems may be 2D or 3D and devices may or may not be implemented with polarization preserving optics for high efficiency. In one embodiment, 2D HDR projection systems may compensate the modulator for varying transmission and contrast versus field of view. In another embodiment, 3D HDR projection systems may include a global or pixelated/segmented modulator. The global or pixelated/segmented modulator may be included in a stereoscopic polarization switch or in a polarization-preserving stereoscopic projection system. Additionally, a combination of global/global or pixelated/pixelated, or global/pixelated modulators may be used.

Abstract: A projection optical device to project an image on a projection plane, includes a reflection mirror, a plurality of projection lenses, a projection lens supporting member to support the plurality of projection lenses, and a position-arrangement member provided at the projection lens supporting member to arrange the reflection mirror at a predefined position on the projection lens supporting member.

Abstract: A projection image display system which forms an image on a projection plane with plural images includes a first projection-type display apparatus, a second projection-type display apparatus, a first-controller configured to control the first projection-type display apparatus to display a guide figure when a projectable region does not contain an assigned projection region for the first projection-type display apparatus, a second controller configured to control the second projection-type display apparatus to display a reference figure when a projectable region contains an assigned projection region for the second projection-type display apparatus. The guide figure is a figure to be referenced by a user for adjusting the position of the first projection-type display apparatus. The reference figure is a figure to be referenced by the user, as a norm for the position adjustment, in combination with the guide figure.

Abstract: An illuminator for an imaging system using a spatial light modulator has first color laser light directed by a dichroic element to a first annular band on a rotatable member. The first band includes phosphor segments that respond to illumination by the first color light to emit second and third color light along a first path back to the dichroic element for output, and a light transmitting or reflecting segment that transmits or reflects the first color along the same or a second path back to the dichroic element for output. The output light is directed to a second annular band on the same or a different rotatable member. The second band includes filter segments corresponded to respectively selectively filter output light generated by the first band segments.

Abstract: An illumination device includes: an excitation light source that emits excitation light having a first wavelength; a fluorescent substance that, when irradiated with the excitation light, emits light having a second wavelength longer than the first wavelength and transmits a part of the excitation light, and thereby multiplexes and emits the transmitted excitation light having the first wavelength and the emitted excitation light having the second wavelength; and a driving unit that moves an irradiation position of the excitation light in the fluorescent substance with the passage of time.

Abstract: A light-emitting device and a related projection system. Light-emitting devices (300, 400) comprise: a light source unit (1) and focusing lenses (330, 430). The light source unit (1) comprises laser units (310, 410) and collimating lenses (320, 420) corresponding to the laser units (310, 410). The light-emitting surface of the laser units (310, 410) is a rectangle, and the light divergence angle of laser passing through the cross-section of the long side of the rectangle is smaller than the light divergence angle of same passing through the cross-section of the short side of the rectangle. The collimating lenses (320, 420) are used for focusing the laser from the laser units (310, 410) on a target surface to form a predetermined light spot. The laser units (310, 410) are located on the light axis of the collimating lenses (320, 420) in a predetermined position deviating from the focal point thereof, so that the predetermined light spot has a predetermined length-width ratio.

Abstract: A projector includes an optical unit having a light modulator and a projection lens, a control section, an exterior enclosure that accommodates the optical unit and the control section, a partitioning section that partitions the interior of the exterior enclosure into a first region where the optical unit is disposed and a second region where the control section is disposed, an intake fan and another intake fan that takes air outside the exterior enclosure into the interior thereof and causes the taken-in air to flow through the first region and the second region, respectively, an aggregation substrate disposed in the first region and having a wiring line that originates from at least a light modulator that are controlled by the control section and is electrically connected to the control section, and a wiring section that electrically connects the control section and the aggregation substrate to each other.

Abstract: To provide an illumination device and a projection type image display device that illuminate an area to be illuminated (image formation area) under conditions where speckle noise is less noticeable. An illumination device according to the present invention includes: a light source 11 that emits coherent light; an optical scanning section 15 that scans the coherent light emitted from the light source 11; a lens array 22 including a plurality of element lenses and configured to diverge the light scanned by the optical scanning section; an optical path conversion system 23 configured to control a diverging angle of the diverging light to be emitted from respective points of the lens array 22 and to allow the diverging light whose diverging angle has been controlled to illuminate an area to be illuminated sequentially in an overlapping manner.

Abstract: A lighting apparatus is for use with a projection-receiving surface. The lighting apparatus includes a light-filtering assembly configured to block transmission of a first amount of light emitted by a light source towards the projection-receiving surface. This is done in such a way that blocked transmission of the first amount of light forms a projected shadow region on the projection-receiving surface. The light-filtering assembly is also configured to permit transmission of a second amount of light emitted by the light source towards the projection-receiving surface. This is done in such a way that transmission of the second amount of light forms a projected glow region on the projection-receiving surface. A filter-moving assembly is configured to move the light-filtering assembly. This is done in such a way that the projected shadow region and the projected glow region move and combine to form a variable curved wave pattern.