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| Number | Title | Issue Date |
| 8405905 | Screen A screen on which an image according to light incident thereon is displayed includes a plurality of lens trains on a light-exiting surface from which the light exits, and the plurality of lens trains are provided along a plurality of virtual reference lines extendin... | 03/26/2013 |
| 7427146 | Light-collecting illumination system Light-collecting illumination systems are disclosed, which include a light source module, a first meniscus lens having a convex side and a concave side and a second meniscus lens having a convex side and a concave side. The concave side of the second meniscus lens i... | 09/23/2008 |
| 7360923 | Light-emitting diode carrier In a light-emitting diode carrier 1, a plurality of light-emitting diodes 9 are mounted on the rear side 3 of the light-emitting diode carrier and project into a plurality of openings 2. During operation, the light-emitting diodes 9 | 04/22/2008 |
| 7342619 | Polarization light splitting film, backlight system and liquid crystal display A polarization light splitting film having a light receiving side and a light transmitting side. The polarization light splitting film includes an optical rotation selection layer at the light receiving side for reflecting one of right and left circularly polarized ... | 03/11/2008 |
| 7342720 | Surface protective member for transmission screen There is provided a surface protective member for a transmission screen that has excellent antireflective effect while maintaining a surface protective effect. The surface protective member for a transmission screen comprises a fine particle-containing hard coat lay... | 03/11/2008 |
| 7339733 | Fresnel lens sheet and rear projection screen using it A Fresnel lens sheet which is bright due to a small light quantity loss, is restricted in speckles and ghosts, does not produce moires, and can be used in an inexpensive transmitting screen, wherein the sheet satisfies the diffusion characteristics of the following ... | 03/04/2008 |
| 7325945 | Electronic device having light emitting units thereon in high density The present invention is to provide an electronic device having a plurality of light emitting units, which are arranged on a panel of the electronic device above each ports thereon in an alternating pattern or in a chess-board pattern with high density, such that th... | 02/05/2008 |
| 7310185 | Double pass illumination system A display device is disclosed, wherein the display device comprises a light source configured to emit light, a projection lens configured to transfer the light to a display surface, at least one other optical element, and a lens disposed optically between the light ... | 12/18/2007 |
| 7256935 | Light transmission sheet, rear projection type projector, light transmission sheet manufacturing device, program, and computer-readable medium To eliminate ghosts caused by retroreflection of projected light and obtain high resolution images. Fine irregularities 5 are randomly formed on the plane of incidence 2a of a Fresnel lens sheet 2 with little space between them. Th... | 08/14/2007 |
| 7180663 | 3D motion picture theatre When any observer receives an image of a scene having the same relative size, shape and location on the retina of each of his two eyes at any instant and the image of the scene has some component of horizontal motion in any direction, the image viewed is three dimen... | 02/20/2007 |
| 7158817 | Portable terminal This portable terminal comprises, a first panel at least having a display, a second panel at least having a keyboard and a hinge unit attached on both the first panel and the second panel, wherein the hinge unit comprises both rotating mechanism around a center axis... | 01/02/2007 |
| 7102820 | Flat valley fresnel lens for a display device A Fresnel lens for a display device is provided. The Fresnel lens includes a first sloped surface angled to receive input light, a second sloped surface facing the first sloped surface, and a valley floor linking the first sloped surface to the second sloped surface... | 09/05/2006 |
| 7095561 | Compact telephoto imaging lens systems An optical system including an array of micro-optic afocal optical subsystems capable of receiving electromagnetic radiation from a source and of transmitting at least a portion of the electromagnetic radiation received from the source, and an imaging subsystem capa... | 08/22/2006 |
| 7029124 | Distortion control for a seamless tile display system A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each section is configured to display a sectional image. One of the lens ... | 04/18/2006 |
| 6971748 | High-resolution display including pixel moving optical system A high-resolution display displaying an image on a screen includes an illumination optical system, an image optical system, a pixel moving optical system, and a projection optical system. The illumination optical system includes a light source emitting a light. The ... | 12/06/2005 |
| 6940643 | Projection screen having elongated structures A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated str... | 09/06/2005 |
| 6940644 | Lens sheet and rear projection screen including the same A lens sheet capable of preventing reflection of extraneous light without decreasing extraneous light absorption, having extraneous light absorbers that can be readily formed by printing and are scarcely stained. The present invention also provides a rear projection... | 09/06/2005 |
| 6934080 | High efficiency viewing screen A low-scatter polarization-preserving multilayer viewing screen. A substrate D, preferably a volume diffuser, for increasing the divergence of information-coded-light while preserving its polarization sense A as it passes therethrough has a discrimination of at leas... | 08/23/2005 |
| 6931265 | Wireless mobile device A wireless Mobile Executive Assistant (MEA) in the form of a PDA/Phone having multiple, independently oriented screens configured to provide data, video independently or in combined fashion. Formed in the opposing first and second edges adjacent to a body having mai... | 08/16/2005 |
| 6597410 | System for the automatic adaptation of projector images and a method for the implementation thereof A computerized projector system which automatically adapts projected images emanating from projectors to fit the size and conditions of screens on which the images are displayed. Moreover, disclosed is a novel method of utilizing a computerized projector ... | 07/22/2003 |
| 6408136 | Zoom camera obscura A portable zoom camera obscura comprising: a telescopic structure including an inner tube and an outer tube positioned concentrically and slidingly movable relative to each other; a cover with a small, centered imaging hole attached to the imaging end of ... | 06/18/2002 |
| 5909291 | Color matching apparatus and method A color matching system initializes a translator by storing profiles of source and destination color devices which include the coordinates in a calibrated color space of the colorants produced in the source and destination devices and a tonal reproduction... | 06/01/1999 |
| 5903399 | UV-curable Fresnel lens resin composition, Fresnel lens, and back projection screen UV-curable Fresnel lens resin compositions a! comprising a (meth)acrylate containing hydroxyl group and aromatic ring (A1), a urethane group-contining (meth) acrylate (A2) comprising an aromatic diol, an aromatic ringcontaining monofunctional (meth)acry... | 05/11/1999 |
| 5835269 | Video display apparatus A video display apparatus has a dot matrix of LEDs mounted on an LED matrix board, and a unitary reflecting member made of metal such as aluminum or the like mounted on the LED matrix board. The reflecting member has slanted reflecting surfaces disposed v... | 11/10/1998 |
| 5815313 | Light transmission screen and its manufacturing method The present invention makes it possible to improve color shift, shading and view angles, to prevent external light absorption and reflection, to enhance external light contrast, to eliminate reflection of external images that appear on a light transmissio... | 09/29/1998 |
| 5690772 | Method for mass-producing eccentric Fresnel lens sheets A method for mass-producing eccentric Fresnel lens sheets comprising the steps of: preparing a number of concentric Fresnel lens sheets; dividing the concentric Fresnel lens sheets into a first set and a second set each including a plurality of Fresnel le... | 11/25/1997 |
| 5657159 | Video display apparatus A video display apparatus has a dot matrix of LEDs mounted on an LED matrix board, and a unitary reflecting member made of metal such as aluminum or the like mounted on the LED matrix board. The reflecting member has slanted reflecting surfaces disposed v... | 08/12/1997 |
| 5495269 | Large area electronic writing system Collaborative work on an interactive system is facilitated by accurately capturing and displaying information on an interactive system, wherein multiple persons may work together for supplying and receiving information with a single large area display. A ... | 02/27/1996 |
| 5420718 | Optical image system with improved resolution The invention relates to optical elements, particularly retro-reflecting, retro-imaging and optical transmission inversion elements to relay a true scale equal conjugate image of a scene. Hitherto, the image had a resolution limit set by the pitch and/or ... | 05/30/1995 |
| 5210641 | High contrast front projection display screen Disclosed is a front projection display screen formed from a multiplicity of optical cells juxtaposed to define a surface. Each of the cells comprises a directional filter and light converging optics. The directional filter, which covers substantially all... | 05/11/1993 |
| 5208620 | Display apparatus A display apparatus comprises a projecting device for projecting an image, with the projecting device having a projection optical system having a limited pupil diameter and screen device arranged at a position where an image is substantially projected by ... | 05/04/1993 |
| 5208891 | Fiber-optic viewgraph projector A viewgraph projector having a light above the transparency receiver and jecting downward through the transparency is provided. The projected image is received below the transparency by a condenser lens and further transmitted by a flexible fiber-optic c... | 05/04/1993 |
| 4982214 | Focusing screen A focusing screen includes a regular array of a plurality of unit regions on an optically transparent substrate, and an irregular array of a plurality of minute patterns of at least two different sizes in convex or concave form on a surface of the substra... | 01/01/1991 |
| 4873398 | Flat panel display with integrated digitizing tablet A novel flat panel display is provided which allows for very precise and reliable detection of the location of the cursor with respect to the displayed image. Parallax problems are eliminated by focusing the displayed image on a panel by projecting the im... | 10/10/1989 |
| 4537474 | Optical system for projection An optical system for projection with a projector apparatus intended to project an image on a screen made with negative curvature includes a single, generally concavo-convex lens, both surfaces of which are aspherically corrected, and the front surface of... | 08/27/1985 |
| 4298246 | Reflection type screen A reflection type screen is made of a transparent substrate which has many convex lenses on the front surface and many mirror planes and black planes on the rear surface. Each lens has a focal length so as to form a focus behind the rear surface as a refl... | 11/03/1981 |
| 4178072 | Optical systems Apparatus for biocular viewing comprises a collimating magnifier lens and a prismatic assembly providing inclined partially transmitting/partially reflecting interfaces between solid parts and reflecting faces parallel to the interfaces which give multipl... | 12/11/1979 |
| 4157214 | Apparatus for showing microdocuments A compact microimage viewing apparatus is disclosed which utilizes a low intensity light source with wide-angle projection optics to provide a clear and highly illuminated image to the viewer. To achieve compactness, the high brightness light-distributive... | 06/05/1979 |
| 4152047 | Projection screen means A screen means free from ghost image comprising a screen and Fresnel lens arranged so that its Fresnel surface faces the screen. The Fresnel lens is arranged that optically inactive surfaces of its Fresnel surface become approximately parallel with the ad... | 05/01/1979 |
| 4126387 | Microform reader A pocket-sized microform reader is realized by employing a unique lenticular (screen) assembly and a projection lens assembly, the latter permitting a fold in the middle of an optical path allowing the size requirements of such a reader to be met. The coo... | 11/21/1978 |
