Matches 1 - 18 out of 18
Match Document Document Title
5363149 Projection television set  
A projection television set includes a body composed of at least two divided upper and lower units, a screen assembly having an integrally formed screen corresponding to the body, and a plurality...
5089896 Color deviation prevention device in projection display with minimized white chromaticity deviation  
A projection display of the type which projects the respective images emitted from a plurality of tubes on a rectangular screen through lenses arranged correspondingly to the projection tubes,...
4651217 Video projector  
A video projector has a structure wherein a projection lens is disposed to be fixed at a predetermined distance with respect to a front surface of a faceplate of a projection cathode-ray tube...
4423438 Projection type cathode ray tube with masking means  
A projection cathode ray tube is provided with elements for correcting a spherical aberration in the optical system. These elements include a correction lens disposed in front of the tube and a...
4305099 Light collection system  
A light collection system for projectors, such as light valve projectors, has a compound reflector associated with an arc lamp. The compound reflector includes an ellipsoidal reflector positioned...
4293196 Objective lens system with aspheric Fresnel elements  
A high speed projection lens system particularly adaptable for a television projection system having a viewing screen and a video image forming surface is provided. The projection lens system...
4234894 Reflecting optical system for projection television  
A projection television system having a light emitting target and a screen for realizing a projected video image is provided with an improved reflecting optical system which provides enhanced...
4197559 Color television display system  
Means for projecting a color television picture by rotating or otherwise moving a multi-colored filter in front of a monochrome projection tube and detecting the color of the projected light to...
4177400 Projection cathode ray tube having target angularly and longitudinally adjustable to tube axis  
A projection cathode ray tube has a target that is mechanically adjustable by means external to the evacuated envelope. The target extends into the evacuated space and is mounted upon a bellows...
4032968 Television image projecting system  
A television image projecting system for projecting a television image on a screen at a magnified scale includes a plurality of projector systems of different colors sealed in one cathode ray tube....
4027328 Catadioptrically coupled color television projection system  
A color television projection system that optically combines the outputs of three small cathode ray tubes, each projecting an image in one of three primary colors, to produce a full-color image...
4004093 Truncated Schmidt optical systems for projecting color television pictures  
A plurality of Schmidt optical systems is clustered together by truncating mutually adjacent edges of mirrors and correcting lenses which comprise individual Schmidt systems. By clustering...
3458252 OPTICAL PROJECTION SYSTEM  
3055973 Means for effecting registration in colour television projection systems  
2945413 Optical beam linking systems  
2821109 Spherical reflecting optical system having a non-planar correcting plate  
2780134 Compact color television projecting apparatus  
3600628 Title is not available  
Matches 1 - 18 out of 18