Matches 251 - 300 out of 367 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
5638208 Projection screen with retro-reflective calibration points, placement tool and method  
In a multiple-projector concave-screen display system, spacial alignment of images on the screen, is enabled by designating calibration points with retro-reflective dots and illumination markers....
5636055 Flip screen assembly  
A screen assembly that includes a screen material which is bonded to a thin metal substrate. The substrate is typically a solid 1/16 inch thick sheet of aluminum that is both light weight and...
5633755 Projection apparatus and method  
A projection apparatus is disclosed that can be used for projection TV and related applications. The apparatus comprises a light source, a projection optical system, a DMD with multiple...
5625489 Projection screen for large screen pictorial display  
A front projection screen for pictorially displaying upon a front face of the screen an image projected onto the front face from a projector comprises a backing member having a front reflective...
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...
5609939 Viewing screen formed using coherent light  
A viewing screen for incident light including a sheet of embossable material in which a first micro-sculpted surface relief structure that controls the direction in which light propagates has been...
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 having...
5581401 Portable screen assembly for use with a projector  
A portable screen assembly for use with a projector has a housing made up of a lower casing and an upper casing pivotally mounted on the lower casing to open or close the lower casing. The housing...
5579180 Portable light reflector  
A portable light reflector includes a collapsible frame and a reflecting sheet connected to the frame. The collapsible frame includes two longitudinal struts and transverse stirrups connecting the...
5548356 Automatic video projection screen  
A screen for an aircraft video projection system. The screen includes a frame for attachment to an aircraft cabin surface and cylindrically shaped first and second pulleys rotatably mounted to the...
5548350 Projection type televison screen mounting structure including an elastic material for holding a screen  
A projection type television receiver in which the screen is maintained on the framework despite temperature changes or external force application, and also a large screen video display apparatus...
5543832 Video display system for projecting an image on to a tilted screen adjacent a surgical field  
A method and apparatus for projecting an image of a surgical field along an optical path to intersect a display screen which is nonperpendicular to the optical path and adjacent the surgical field....
5541769 Uniform-brightness, high-gain display structures and methods  
A uniform-brightness, high-gain projection screen is especially suited for reflecting radiation from a projector to a viewer who is spaced from the projector along a projection axis. The screen is...
D367490 Screen for a liquid crystal projector  
5491584 Pivotal, large area cinematographic screen for open-air performances  
The projection wall comprises a screen section carrying the screen and resting on two supports. The screen section can be pivoted by means of hydraulic drives about a first horizontal axis in both...
5486884 Reflecting image projection screen and image projection system comprising such a screen  
A reflecting image projection screen (1) is described, as well as an image projection system (17) in which such a projection screen (1) is used. Viewed from the front side (3) of the projection...
5445322 Apparatus for projecting water to form an insubstantial screen for receiving images  
An apparatus projects water under pressure to form a screen (1) made of transparent droplets (2) that can reflect rays of light (3) striking the screen by back-projection (4). It includes a...
5416617 Image projection display screen employing polymer dispersed liquid crystal layer and electrochromic layer  
A diffusing display screen resulting from the combination of a cell comprising a polymer dispersed liquid crystal material which can be made diffusing, and of a cell comprising an electrochromic...
5414558 Screen for a projector  
A screen is used for a projector and includes a metal plate body and a plurality of elongated parallel streaks. The metal plate body has a concave reflection surface which is horizontally straight...
5402263 Rear projector having an angled screen mounting frame  
A rear projector for projecting an image onto a display screen mounted on a frame. The frame includes first and second pairs of oppositely disposed mounting members having surfaces adapted to...
5400178 Screen unit for rear projection picture display system, method for producing the same and component to be used for assembling the screen unit  
A rear projection screen unit in a large-size picture display system, composed by combining a plurality of rear projection screen panels arranged in a lattice square with at least one ordinate and...
5353152 Screen projection apparatus  
A screen projection apparatus includes a housing within which a pair of projection screens are stored in a rolled position on motor driven rollers. A pair of access doors are mounted on the housing...
5347644 Three-dimensional image display device and systems and methods for implementation thereof  
This invention relates to a three-dimensional image display device comprising two or more parallel elements, each element being formed from a transparent material, each element having a coating...
5341241 Trap door for projection screen case  
An electrically actuated trap door system for a projection screen case. The system includes a trap door having first and second opposing edges. The first edge of the trap door is pivotally...
5337179 Flexible controllable optical surface and method of making the same  
A flexible optical surface, film or laminate using a non-rigid support substrate with a sufficient modulus of elasticity defining a controllable surface having a flat state so that repeatedly...
5296964 Replaceable fascia for projection screen case  
A casing for a projection screen and a motorized projection screen system and method for controlling the same are disclosed herein. The casing includes a fascia and endcaps which are affixed to the...
5270752 Method and apparatus for a fog screen and image-forming method using the same  
A method and apparatus for forming a fog screen for use in the projection for display of an optical image which comprises disposing a pair of substantially parallel air curtains and blowing a fog...
5231689 Wide angle viewing illuminated information display assembly and process for manufacturing same  
There is disclosed a light transmitting display assembly provided with a source of electromagnetic radiation in the visible spectrum and comprised of a display board containing information and...
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...
5206760 Multiprojection apparatus  
There is provided the construction of a multiprojection apparatus composed of a plurality of projection units arranged in the vertical and horizontal directions, in which a transparent holding...
5200853 Board for screening and writing and a method for the production thereof  
The invention provides a durable multipurpose screenboard especially adapted for both the screening of projected images and for writing thereon, wherein the screenboard comprises an upper section,...
5193015 Cholesteric liquid crystal screen which reflects substantially all of the projected light  
A screen for use in a front projection system includes a section capable of reflecting light of certain, predetermined wavelengths more than light of other wavelengths. The screen appears black or...
5189454 Phase-type focusing screen and process for manufacturing the same  
A phase-type focusing screen includes is made by using two photo masks each having a plurality of unit pattern regions regularly arrayed, each of which has a plurality of minute patterns of a...
5160951 Rear view projection system  
A rear view projection apparatus for viewing from a rear screen side the images projected onto the screen front side. This apparatus comprises a projector, a screen made of a transparent plastic...
5148309 Reflective type screen  
A reflective type screen comprising a reflective surface layer a polarizing plate layer located in front of said reflective surface layer and a diffusion layer located in front of the polarized...
5134373 Magnetic resonance imaging apparatus employing optical viewing screen  
In a magnetic resonance imaging apparatus wherein an object under examination is positioned within a imaging hole so as to acquire magnetic resonance imaging information derived therefrom by...
5130846 Screen panel fastener  
A dome-shaped motion picture projection screen is constructed from an external supporting frame and a plurality of panels that are clipped to the frame by a series of individual fasteners that are...
5127722 Projection screen device  
There is disclosed a projection screen device having a high luminance adapted for use in an overhead projector, a video projector or a liquid crystal projector. The projection screen device...
5117245 Electronic printer or scanner using a fiber optic bundle and an array light emission device  
An electronic printer employing a fiber optic bundle arranged linearly at a first face and in an area array in a second face also employs an area light emission device for directing light signals...
5111337 Enhanced contrast, maximum gain front and rear projection screens  
A method of printing a translucent coating onto the film backing portion of front or rear projection screens to provide an economical and efficient process of obtaining sharper definition and...
5103339 Rear projection screen multi-panel connector assembly  
The invention comprises a multiple rear projection screen assembly which includes a plurality of rear projection screens and framing members between adjacent screens. Each screen has edges and a...
5058989 Transmission type screen and method of manufacturing the same  
A transmission type screen having a screen body constituted by at least one plastic sheet formed of a multiplicity of transparent plastic strands arranged in the shape of a sheet, each the strands...
5048931 Liquid crystal display projection system having improved contrast  
For enhancing the contrast of a picture on a projection scrren derived from a liquid crystal display, the analyzer, which is normally part of the liquid display unit, is incorporated either in...
5040870 Screen for projection  
A screen for projection comprising light-controlling or light-scattering film obtained by curing a composition comprising at least two monomers or oligomers which have a polymerizable...
5026152 Enhanced cinema system  
An enhanced cinema system for use with a movie screen using a fog-like gas released from a plurality of retractable shafts having slits. The plurality of shafts may spin to generate a fog effect...
4984871 Optical rear projection screen hanger assembly  
A hanging device for hanging an optical rear projection screen comprising means for securing a top portion of the screen, means for non-rigidly restraining a bottom portion of the screen to allow...
4974957 Device for 3-dimensional imaging of laser and/or collimated light  
A device for 3-dimensional imaging of laser light effects when said light is imaged on and passes through plural imaging elements resulting in a multi-planer and apparently 3-dimensional image when...
4964718 Optical corrector  
An optical projection system is provided wherein a light valve supplies an aperture consisting of spatially separate colors for projection by a plurality of projection lenses to a projection plane....
4962420 Entertainment video information system having a multiplane screen  
A video information system includes a screen (1) having at least two cells (2-5, 14-16) rotatable in at least one direction and forming a three-dimensional multi-plane screen system changeable in...
4960314 Diffraction optics diffusing screen laminate for full color on-axis viewing  
An optical screen module for full-color, on axis viewing is described. The module has a transmission holographic optical element, a louver filter, and a diffraction optics diffusion screen. Input...
Matches 251 - 300 out of 367 < 1 2 3 4 5 6 7 8 >