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| Number | Title | Issue Date |
| 7329977 | Discharge lamp with a reflector and a burner The invention relates to a discharge lamp with a reflector (1) and a burner (2), wherein the reflector (1) comprises at least a reflective contour (3) and a hollow reflector neck (4), the burner (2) is arranged in centered m... | 02/12/2008 |
| 7324169 | Projection optical system, projection television, and method of manufacturing lens included in projection optical system Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing... | 01/29/2008 |
| 7149033 | UV visual light beam combiner An improved light beam combiner is disclosed that creates a more uniform light source across the UV, Visual, and NIR range. It is an optical mechanical device made up of a standard high low dielectric thin film which, when placed at a 45 degree angle between a Deute... | 12/12/2006 |
| 7118226 | Sequential color recapture for image display systems A method for transmitting light in an image display system includes generating a beam of light from a light source. The beam of light is directed at a first segment of an electronically-switchable filter. A first portion of the beam of light is accepted by the first... | 10/10/2006 |
| 7055960 | Rear projection display device A rear projection display device includes an image generator, a reflector, a screen and a light shield disposed between the reflector and the screen. The image engine emits image beams among which ineffective ones are blocked by the light shield while effective ones... | 06/06/2006 |
| 6912086 | Projection device and large-screen display apparatus using the same The invention provides a projection device comprising a screen constituted in a layered structure with a light-transmissive screen panel and a light-transmissive reinforcing panel, wherein a front panel in the screen has a plane wider than residual panels on the bac... | 06/28/2005 |
| 6900945 | Lenticular lens sheet A lenticular lens sheet 4 comprises a plurality of lens elements of incidence 21 arranged on the incidence side, and a plurality of lens elements of emergence 22 arranged on the emergence side. The light that has passed through each lens element... | 05/31/2005 |
| 6873374 | Shielding apparatus of projection television A shielding apparatus of projection television is disclosed. A metal shield casing made of metal plate members shields an optical block and a circuit block. Metal plate printed board holding sections are connected to the metal shield casing detachably at predetermin... | 03/29/2005 |
| 6833951 | Seamless rear projection screen The present invention provides an optical faceplate made from fibrous crystals which are transparent, colorless and work as a coherent faceplate. The numeric aperture of a single fiber is within a range of about 0.20 to 0.66. A nonlimiting example of such a fibrous ... | 12/21/2004 |
| 6717626 | High contrast projection television shield A protection panel is provided that enhances the color quality and/or contrast of a rear projection television set. The protection panel has a spectral transmittance that peaks at dominant wavelengths of red, green, and blue light, and that is reduced at wavelengths... | 04/06/2004 |
| 6296214 | Video wall framing system A video display screen is held by an elongated holding bracket that has a inwardly extending flange at a distal end of the bracket. The flange fits into a groove extending along the edges of the screen to hold the screen. The bracket is fastened to a supp... | 10/02/2001 |
| 6113041 | Video wall framing system A video display screen is held by an elongated holding bracket that has a inwardly extending flange at a distal end of the bracket. The flange fits into a groove extending along the edges of the screen to hold the screen. The bracket is fastened to a supp... | 09/05/2000 |
| 6000668 | Video wall framing system A video display screen is held by an elongated holding bracket that has a inwardly extending flange at a distal end of the bracket. The flange fits into a groove extending along the edges of the screen to hold the screen. The bracket is fastened to a supp... | 12/14/1999 |
| 5805211 | Electrostatic probe device for signal detection of cathode ray tube displays An electrostatic probe device detects signals displayed on a cathode ray tube in a non-invasive manner. Specifically, the probe device includes a probe that is spaced from a fluorescent screen of a cathode ray tube by a dielectric material and a detection... | 09/08/1998 |
| 5796446 | Television receiver or video monitor of the back-projection type A television receiver or video monitor of the back-projection type, in which a projector forms an image which can be observed on a visual display screen by rear illumination after reflection on a deflecting mirror. The projector includes in immediate prox... | 08/18/1998 |
| 5742358 | Projection type displaying apparatus having screen A projection type displaying apparatus with a movable built-in screen has an image display, an image projector and a position detector for detecting a position where the built-in screen is installed. When the position detector determines that the built-in... | 04/21/1998 |
| 5706062 | Projector system including keystone correction A projector for use with a light source and including a shutter assembly having a multiplicity of pixel light valves and a color separator disposed intermediate the light source and the shutter assembly and spaced therefrom and providing a plurality of sp... | 01/06/1998 |
| 5699131 | Light transmission type screen assembly The present invention provides a screen assembly wherein measures are taken to prevent slack produced in a lenticular lens sheet due to temperature changes and gaps created between a Fresnel lens sheet and the lenticular lens sheet due to temperature chan... | 12/16/1997 |
| 5677071 | Fluorescent film structure of color Braun tube The present invention is to improve color purity and brightness of a color Braun tube by constructing a fluorescent film for a red fluorescent material as a laminated structure. The present invention relates to a structure of a fluorescent film for a colo... | 10/14/1997 |
| 5617152 | Projector system for video and computer generated information A projector for use with a light source and including a shutter assembly panel having a multiplicity of pixel light valves overlying an array of interspersed shutter pixels each of which transmits only one of a plurality of colors, and a color filter disp... | 04/01/1997 |
| 5559564 | Cathode ray tube apparatus for projection TV system A cathode ray tube apparatus for a projection TV system which improves the color purity of the luminescence in the cathode ray tube, reduces the chromatic aberration by the projection lens, enables the same type of projection lens to be mounted for all of... | 09/24/1996 |
| 5523802 | Dual-mode image display apparatus for displaying color images and black-and-white images A dual-mode image display apparatus includes a black-and-white image display device and a selective filter. The selective filter is caused to assume a first mode in which it sequentially serves as red, green and blue filters, and a second mode in which it... | 06/04/1996 |
| 5485226 | Hood assembly for a video display unit A hood assembly for a display such as a VDU display comprises a partially reflecting mirror made from sheet material having a relatively low light transmittance, in the range 25% to 45%, and most preferably in the range 32.5 to 37.5%.... | 01/16/1996 |
| 5473396 | Display apparatus and method of making the same A novel type projection TV has a large size fluorescent screen bearing three kinds of dots or stripes of fluorescent material which emits visible lights of red, green and blue at excitation by UV-rays, which are emitted from UV-emitting CRTs' for red, gre... | 12/05/1995 |
| 5412437 | Projection type display device A projection type display device including a CRT with a fluorescent layer and a face glass for projecting an image reflected onto the fluorescent layer through the face glass, a transparent liquid, at least one lens element and onto a screen. The transpar... | 05/02/1995 |
| 5404181 | Monitor filter A monitor filter includes a body having a front cover formed on an upper edge with a recess having a semi-tubular portion at both ends, a rear cover formed on an upper edge with a recess having a semi-tubular portion at both ends, the semi-tubular portion... | 04/04/1995 |
| 5387948 | Method and apparatus for reducing scattered light in projection television tubes To prevent light scattering at the edges of CRT's used in projection television, emission of light is prevented beyond a desired region of raster scanning. In one embodiment, portions of the front surfaces of the CRT's outside the desired region are darke... | 02/07/1995 |
| 5353070 | Lens holder which reduces internal reflections In a lens-barrel etc. for holding lenses, a thin film composed of a fluororesin compound having a refractive index lower than that of a material constituting the lens-barrel is formed on an inner surface of the lens-barrel, thereby lowering an amount of t... | 10/04/1994 |
| 5313276 | Method for preparing three dimensional images and audiovisual system for displaying thereof An audiovisual display system for displaying three dimensional images including an image source for projecting an image in a predetermined direction. A stage contained within the audiovisual display system provides a setting for the video image. A transpa... | 05/17/1994 |
| 5313307 | Casing for projection television receiver and screen mounting method A method for installing a screen to a projection television receiver that uses a transmission-type screen such that the screen can be easily installed to and removed from the projection television receiver when multiple projection television receivers are... | 05/17/1994 |
| 5299017 | Screen fixing device of projection type television system A screen fixing device of a projection type television system including a projection unit comprises a fixing frame for detachably fixing a screen, the fixing frame being provided with a plurality of through holes each extending laterally of a front openin... | 03/29/1994 |
| 5144417 | Projection type television apparatus In a projection type television apparatus, a first and a second color selecting device are located on an optical light path passing through a cathode ray tube and a series of projection lenses are disposed in front of the cathode ray tube without a color ... | 09/01/1992 |
| 5142373 | Rear projection television set having improved contrast A rear projection television set is of the construction in which an image light projected from a projection cathode ray tube is reflected by a mirror onto the rear surface of a screen comprising a Fresnel lens and the light passes through the front surfac... | 08/25/1992 |
| 5138222 | Projection cathode ray tube having an interference filter A projection cathode ray tube has an interference filter which is disposed at a boundary between a face plate and fluorescent layers. The interference filter is designed to be thinnest at the central area of the CRT and to become gradually thicker toward ... | 08/11/1992 |
| 5057912 | Cathode-ray tube with interference filter and projection television system employing same A projection television system comprising a cathode-ray tube having a face plate, a display screen coated with a phosphor of the type ZnS:Ag and an interference filter arranged between the display screen and the face plate. The ZnS:Ag has an admixture whi... | 10/15/1991 |
| 5055922 | Color TV projection lens system Disclosed is an improved color projection TV lens system which provides reduced chromatic aberration and improved chromaticity. These improvements are achieved by incorporating a light absorbing material into at least one lens in the system wherein the le... | 10/08/1991 |
| 5042908 | Projection screen device A projection screen device for a back projection type television system for projecting an image by emitting beams from a projector, comprising, a lenticular sheet having black strips provided on an emergent surface of the lenticular sheet, a sensor, which... | 08/27/1991 |
| 4835602 | Color projection television system with apparatus for correcting misconvergence and misgeometry which calculates coefficients of equations representing deflection correction waveforms A projection television convergence method and apparatus allow rapid and simple correction of low-order misconvergence and misgeometry problems. A hybrid system employs digital programmable attenuators and a digital control system, making it possible to e... | 05/30/1989 |
| 4706115 | Geometry adjustment circuit for a color video projector producing vertical amplitude, vertical linearity and horizontal trapezoid correction signals from a single user-controlled signal A geometry adjustment device for a color video projector having three monochrome tubes each projecting an image of a given color on a screen, comprising a geometry correction circuit adjustable by the user for providing, by acting on a single signal, vert... | 11/10/1987 |
| 4556913 | Apparatus for preventing virtual images in projection television receivers A rear projection television receiver has an image source, first and second mirrors, and a screen. Light travels from the image source to the screen along a first light path via the first and second mirrors and along a second path that bypasses the mirror... | 12/03/1985 |
