Matches 101 - 150 out of 174 < 1 2 3 4 >

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6735001 Image display apparatus  
An image display apparatus comprises a hologram screen 2 formed by bonding a hologram element 20 to light-transmissible films 21 and an illumination device 11 for irradiating image light 10 onto...
6710919 Translucent screen comprising a lens system  
The invention relates to a translucent screen comprising a sheet element with a first surface and a second surface substantially parallel with the first surface, wherein the first surface...
6644816 Display device having a cylindrical projection surface such that an image projected onto the inside is visible on the outside  
The invention relates to a display device for displaying visual information, comprising: at least one image-forming element; at least one light source for generating a light beam, which in...
6636355 Microstructured rear projection screen  
Disclosed is a rear projection screen that includes a plurality of tapered waveguides and a light absorbing layer disposed over the tops of the waveguides, but that does not completely fill the...
6631030 Projection screens and methods for making such projection screens  
Projection screens and convenient and efficient methods of making such projection screens are provided. Recycled glass is reformed to provide glass microspheres of sufficient quality for use in a...
6624937 Polarization splitting sheet, optical sheet laminate, planar light source apparatus, and transmission-type display apparatus  
In a polarization splitting sheet (10) made of a transparent base material sheet (12), a coating layer (14) is provided on the rear surface of the base material sheet(12), this coating layer (14)...
RE38245 Glass microspheres for use in films and projection screen displays and methods  
Glass microspheres and rear projection screens containing glass microspheres, which combine a desirable index of refraction (preferably, no greater than about 1.70) and low levels of defects...
6567215 Beaded rear projection screen with tunable gain  
The present invention provides a beaded rear projection screen that has performance properties such as gain and viewing angle that can be tuned by using a mixture of two or more types of...
6535333 Optical system with reduced color shift  
An optical system with improved color shift characteristics is described. Preferably, the system comprises a rear projection display that includes a light source providing light in first and...
6519087 Rear projection screen incorporating diffuser  
A rear projection screen including a plurality of refracting beads bound in optical contact with a substrate is disclosed. The beads are surrounded by an opaque matrix. A diffuser is positioned...
6502942 Rear projection display apparatus and translucent screen for use therein  
For providing a rear-projection type display apparatus, and a translucent type sheet for use therein, in particular, using an image modulation element, such as, a liquid crystal or a DMD (Digital...
6471355 Image control system  
An image alignment system for rear projection in which a portion of the normally changing pixel pattern contains a pixel reference mark, which appears in each of the side-by-side pixel images...
6466368 Rear projection screen with reduced speckle  
A rear projection screen has one or more internal layers that reduce the speckle perceived by a viewer. A screen assembly has a light-source side and a viewing side. The assembly includes a screen...
6417966 Rear projection screen using internal reflection  
An optically dispersing film for a rear projection system includes reflecting surfaces disposed so as to reflect light passing therethrough into at least one dispersion plane. The reflecting...
6411436 Transmission type projection screen  
A transmission type projection screen includes a diffusion layer on which projection light is focused, and a neutral gray layer positioned behind the diffusion layer on a rear side of the...
6359732 Plastic sheet for rear projection screens  
Provided is a plastic sheet for rear projection screens, which has a two or more multi-layered structure and which can be readily warped without being unfavorably swollen or waved. The plastic...
6335828 Micro-lens array sheet  
A micro-lens array sheet having a wide field angle, a field angle control, a high light efficiency, a high brightness and a high contrast, which is provided with a layer of micro-lenses each...
6327083 Rear projection screen with reduced speckle  
A rear projection screen which includes a front lenticular surface, a diffusion region behind the lenticular surface, a non-diffusion region behind the diffusion region, and a rear phase grating...
6295162 Rear projection screen with optical sheet having irregularities caused by diffusing material smoothed with a transparent control layer  
A rear projection screen including a lenticular lens sheet with lenticular lenses for condensing or diffusing light and a transparent smooth layer having a surface roughness of 0 to 40 micrometers...
6278482 Method for imaging a sphere disposition, method and apparatus for measuring the same, and method and apparatus for manufacturing a planer lens  
A bead disposition is imaged while performing illumination by reflection illumination or penetration illumination so that a peak point of brightness brighter than the outside of a bead is observed...
6261402 Planar type lens manufacturing method  
A sure and efficient manufacturing method of a translucent type screen using micro glass beadsis probided. A carbon toner is scattered onto micro glass beads which are buried and fixed in a UV...
6262840 Plano lens, rear-projection type projector screen employing the same, and rear-projection type video display apparatus  
A plano lens according to the present invention includes a transparent base member disposed on a light emission side thereof or light incidence side thereof and a minute-transparent-ball disposing...
6239907 Rear projection screen using birefringent optical film for asymmetric light scattering  
A dispersing element for a rear projection screen assembly is sensitive to the polarization of the light passing through the element. In particular, the element disperses light having a first...
6233024 Rear projector  
In a rear projector with a housing on whose front side is arranged a screen for displaying a video picture, with a brightness-modulated and color-modulated R-G-B light source for emitting a light...
6049423 Rear projection screen including a lenticular lens with clear and diffusing layers on light receiving and emitting sides, respectively  
A rear projection screen includes a lenticular lens sheet integrally having a clear layer not containing any diffusing agent, disposed on a light receiving side and having a plurality of...
6038070 Transmission type screen with glossy permeable layer and method of manufacture  
A permeable image display screen having a lenticular lens sheet including a plurality of semi-cylindrical lens portions and a plurality of non-focusing portions. The lens portions are arranged in...
6002500 Holographic screen including convex protrusions  
A holographic screen of a rear projection type for use in a projector for transmitting projection light received from a rear end of the projector onto a viewing surface. The holographic screen...
5889612 Rear pojection screen  
A rear projection screen is described, which comprises an optically transparent plate, a first surface of which is provided with a structure of juxtaposed cylindrical lenses which extend in a...
5837346 Projection screens having light collimating and light diffusing properties  
Various forms of light-diffusing screen are disclosed comprising plastics sheets having surface texturing of some kind, adding to or modifying the diffusing effect. The plastics sheets may have...
5751478 Rear-projection screen  
A rear-projection screen having at least a Fresnel lens and a light-diffusing member, and is characterized by having vertical-direction light diffusion properties greater at its upper and lower...
5708528 Multiscreen display and process for assembling the same  
Respective unit displays forming a multiscreen display are divided into two halves of a front half cabinet containing a screen part and a rear half cabinet containing a light box part. In using,...
5694245 Projector with improved screen  
A projector comprising liquid crystal display panels and a projection lens for projecting the modulated light to a screen. The screen includes a transparent plastic member formed as a lenticular...
5675434 Image projection apparatus and projection screen  
An image projection apparatus of a rear projection type according to the present invention includes: a display portion having three image sources respectively displaying red, green, and blue...
5668662 Front projection screen with lenticular front surface  
A front projection screen is made up of a front portion and a rear portion, the front portion having a front surface lenticular lens array and light scattering particles forming a diffusion region...
5661600 Transmission type screen and method of manufacturing thereof  
A lenticular lens provided on the viewer side of a transmission type screen is composed of at least two layers, that is, a surface layer and a base layer at least one of which contains a light...
5615045 Screen of projection display  
A longitudinal-stripe lenticular lens screen and a transverse-stripe lenticular lens screen are superposed, and a light diffusing agent is mixed only in the longitudinal-stripe lenticular lens...
5604632 Screen fixing structure  
A screen fixing structure comprises a screen, a frame, an edge side rectangular frame fixed at the edge part of the screen, a holder holding the edge side rectangular frame, holding brackets...
5566370 Simulation display system  
A compact display system simulates a panoramic view to an observer located at a central viewing station. A toric mirror, comprising a compressed portion of a sphere, has a concave reflective...
5499061 Projection system and display apparatus for compressing and expanding aspect ratio of a picture  
A projection system for pictures and a projection display apparatus which are designed to improve the luminance and contrast of a magnified picture on a projection screen by increasing the...
5394198 Large-screen display system  
A folded, magnifying, front projection arrangement for video displays includes a video image source, such as a flat panel display unit out of the user's field of view, projects its image onto a...
5307205 Bilayer rear projection screens  
Efficient, lower weight, more versatile rear projection screens can be produced by combining in laminated form an unmodified clear matrix resin layer with a second sheet containing light diffusing...
5196960 Lenticular lens sheet  
A double-sided lenticular lens sheet has an entrance lens layer and an exit lens layer, at least said exit lens layer containing light-diffusing fine particles, and has parameters satisfying the...
5170287 Method for hiding scratches or imperfections on the surface of screens used in projection systems  
A novel light diffusing resin (material) has been invented which combines excellent light diffusing properties with high light transmission. The combination of properties is possible because the...
5066099 Rear projection screen and method of producing the same  
A rear projection screen for use in a rear projection image display device comprises one or more sheet members through which light is sequentially transmitted from the side of a plane of incidence...
4979801 Rear projection screen having a wide-ranged extinguishing rate for use in a TV receiver  
A rear projection screen having a wide-ranged extinguishing rate in which an area of portion for extinguishing the illumination light from exterior of the rear side of screen is widened so that...
4725448 Application of electrically-charged light-absorbing particles to a lenticular screen  
A method for selectively applying light-absorbing particles to a lenticular, light-transmissive screen, such as a projection television screen. The particles are charged and are selectively...
4712869 Three dimensional stacked reproduction screen  
A three dimensional reproduction screen device whereby use of multiple transparent screens allows viewer to have actual depth perception. This is accomplished by having transparent screen area...
4701019 Selective application of light-absorbing particles to a lenticular screen  
Light-absorbing particles are selectively applied to a lenticular light-transmissive screen, such as a projection television screen. The particles are selectively deposited in grooves between...
4692359 Magnetic application of light-absorbing particles to a lenticular screen  
A method for selectively applying particles having cores of magnetically-permeable material and outer, fusible surfaces to a lenticular, light-transmissive screen, such as a projection television...
4688093 Transmission projection screen and method of manufacturing same  
The invention relates to a transmission projection screen having a high light output and a suitable contrast, for example for use in a projection television system, and a method of manufacturing...
Matches 101 - 150 out of 174 < 1 2 3 4 >