Abstract: Aspects of the invention can provide a projector capable of projecting a high-quality image by illumination that does not produce a difference in size among illumination areas for respective colors including red, green, and blue. A light-source light from a light source can be separated into color lights by first and second dichroic mirrors provided in a color separation system, which independently go incident on corresponding liquid crystal light valves as illumination lights. Herein, a mutual chromatic aberration can be corrected by adjusting, as needed, the radii of curvature of respective field lenses provided in the color separation system for use in adjusting angles of incidence of illumination lights with respect to the liquid crystal light valves. This configuration makes it possible to illuminate the respective liquid crystal light valves by illumination areas of exactly the same size, which in turn enables a high-quality image having no display shadow to be projected.

Abstract: A thin rear projection television using a wide angle lens system is provided. In an embodiment, a fresnel screen is used in which there are at least two spatial zones in the screen with different properties. The at least two zones may be adapted to compensate for the variation in input angle.

Abstract: Each shading plate comprises a rotating shaft and a driving shaft arranged vertically. First divided shading plate is loosely fitted to and supported by (not adhere to) the rotating shaft and rotates around the shaft. Second divided shading plates are fixed to the rotating shafts and rotate by rotating movement of the shafts. A driving shaft is connected longitudinally to (not adhere to) an edge of the first divided shading plate and supply power to rotate the first divided shading plates. Recesses are formed at the center of upper short side and at the center of lower short side of the first divided shading plate and the first divided shading plate and the second divided shading plates which form one and the same shading plate are so constructed that their short sides are overlapped each other.

Abstract: Low-profile, large screen display using a rear projection array system using an array of micro projectors, each comprised of a micro-display device, several optical components, a red/green/blue light emitting diode light source, a light sensor for each color and power driving and interface electronics circuits. The plurality of Micro Projectors are arranged as an array along the vertices of a grid to conjointly project a uniform and seamless image comprised of the collective projected output pixels (sub-image) of the array of Micro Projectors. The Array Controller processes output signals generated by the light sensors embedded in each Micro Projector in the array and generates pixel gray scale input and light source control signals for each of the Micro Projectors in the array to maintain uniform luminance and chromaticity (color-point) across the array. Various features are disclosed. including tapering and diffusion of the sub-image boundaries to form a single large display.

Abstract: A projection display system includes a screen, an illumination projecting system to form an image using light radiated by a light source, to magnify the image, and to project the image along a rear side of the screen, and a reflection unit having an array of unit mirrors to reflect the image received from the illumination projecting system onto the screen, each of the unit mirrors having a first sloped reflection surface and a second reflection surface adjacent to the first reflection surface having a predetermined angle therebetween.

Abstract: A rear projection display device. The display device includes a screen and a base to which the screen is mounted. The base includes a plurality of vents to allow air to flow in and out of the base, a heat source, and an air movement device to move air from near the screen, past the heat source, and out through the vents.

Abstract: A portable device includes a camera section, a camera image display, a first case having a first surface having the display therein and a second surface opposite the first surface, a second case that can be positioned over the second surface of the first case, a rotation axis section supporting the second case to the first case rotatably about an axis perpendicular to the first surface of the first case, and a camera/display operation section. The camera section has an optical axis, and the rotation axis section accommodates the camera section so that the optical axis is parallel to the rotation axis. The operation section is on the first surface of the first case opposite an image-capturing direction of the rotation axis of the rotation axis section.

Abstract: A lightweight, compact image projection system, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality or higher in color. A shock-resistant arrangement protects at least one of the system components, for example, a green laser module with its associated thermo-electric cooler from shock damage during a drop event without sacrificing the capability of aggressively removing waste heat generated by such system components.

Abstract: A security camera has an adjustable turret that holds a lens assembly which can be aimed in various directions. The camera also has a compact housing which, in combination with the adjustable directionality of the turret, enables universal mounting to various structures and positions in an aircraft cabin. The camera operates in light and dark conditions, as the lens assembly is configured to focus visible and infrared light wavelengths onto a fixed focal plane. In an embodiment, the camera includes an infrared illumination source to illuminate a field of view during dark conditions. The lens assembly includes a rigid barrel with a pinhole aperture through which light enters a series of lens elements. An optical sensor is mounted to an opposite end of the barrel at the fixed focal plane. The sensor is rotatably adjustable to yield a correct image orientation depending on the turret position.

Abstract: A projector includes an illumination device, a color separation system, a light combining system, a projection system, and an optical adjustment portion. The color separation system separates the light emitted from the illumination device into blue light, red light, and green light. The light combining system can have a first dichroic filter reflecting one of blue light or red light, and a second dichroic filter reflecting green light which are placed in a crossed state and can combine image lights of respective colors exiting from the first through third light modulation devices. The projection system can project a combined light exiting from the light combining system while correcting chromatic aberrations of magnification of blue light and red light with respect to green light. The optical adjustment portion can adjust a size of an image light corresponding to the green light of the combined light exiting from the light combining system.

Abstract: The invention relates to a device for adjusting light intensity for discharge lamp projectors with an optical assembly that contains a spherical mirror and a discharge lamp, and a Fresnel lens provided in front of the lamp of the optical assembly. The device is characterized in that an iris diaphragm (5) is provided on the optical assembly, in front of the lamp, in correspondence with the focus of the optical assembly.

Abstract: A data processing apparatus able to generate a motion vector using projection image data in a short time, wherein an access circuit stores vertical projection image data and horizontal projection image data of each macro block of frame data and reference image data at continuous addresses in a frame memory, whereby they are read at a high speed and output to a projection index data generation circuit.

Abstract: An air filtration device for projector includes a holder, a filter, and a rack. The rack is movably disposed in the holder for supporting the filter. When the rack moves to a first position, the rack is received within the holder. When the rack moves from the first position to a second position, the filter is released from the rack for replacement.

Abstract: An optical engine architecture that operates as either a two-imager or a three-imager optical engine. The optical engine uses a first PBS cube and a second PBS cube having an optical axis between them. In between the first PBS cube and second PBS cube are two quarter wave plates and a dichroic mirror, where the dichroic mirror is disposed between the two quarter wave plates. In the three imager embodiment, a retarder is disposed between the second PBS cube and the quarter wave plate closest to the second PBS cube. In the two imager embodiment, this retarder is not necessary.

Abstract: A beam splitter includes a first member having at least a first dichroic layer, and a second member having at least a second dichroic layer, the first member being crossed relative to the second member.

Abstract: An optical engine apparatus to magnify and project an image beam formed by a display device using light on a screen includes a light source to emit the light, a reflection mirror to reflect the light emitted from the light source toward the display device, and an adjuster coupled to the reflection mirror to adjust an inclined angle of the reflection mirror to move the light reflected from the reflection mirror toward the display device in a desired direction. In the optical engine apparatus, a position of light projected on a display device can be easily adjusted.

Abstract: A projection display device having a plurality of transmission screens, each having an image display portion of different dimension, and each having light transmissivity and being provided with a back surface layer having optical directivity on a back surface side; a main body capable of projecting a projection light, and a optical unit that guides the projection light from the projection device main body to the back surface of the transmission screen; and a supporting unit that supports one transmission screen selected from the plural transmission screens and the projection device main body. An image is displayed on the transmission screen by allowing the projection light guided by the optical unit to pass through from the back surface side. One transmission screen is selected, and the selected transmission screen, the projection device main body, the optical unit, and the supporting unit are assembled for use.

Abstract: A first light-source unit and a second light-source unit are disposed in such a manner that those respective optical axes intersect approximately perpendicularly to each other, a reflective polarizing plate is disposed in the intersecting position of both optical axes at an angle of approximately 45°, a reflecting mirror is disposed approximately parallel with the reflective polarizing plate to reflect two light beams in the same direction on one of first and second optical paths emerging from the reflective polarizing plate, and secondary images of the first and second light-source units formed on each of lens cells of a second lens array plate by a first lens array plate are focused at respective different positions on the same lens cell.

Abstract: A multimedia display device includes a docking station having speakers and a media drive, wherein the docking station is configured to structurally and communicatively couple an image projection device to the docking station.

Abstract: An illumination apparatus includes: a group of light source segments; a group of condenser lenses arrayed as opposed to the group of light source segments, and a group of rectangular lens elements arrayed as opposed to the group of condenser lenses for converging a light ray transmitted through the opposing condenser lens; and an illumination optical system for guiding the rays to an illumination plane. The lens elements have a shape of a rectangle and are arrayed in a rectangular effective area in such a way that a longitudinal axis of each lens elements intersects an axis passing a side of the effective area at 45°.