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Class Information
Number: 349/57
Name: Liquid crystal cells, elements and systems > Particular structure > Lens or prism separate from projection system (i.e., it is not integral part of illumination system)
Description: Subject matter wherein the liquid crystal device includes a specific lens or prism near or adjacent to the liquid crystal cell, wherein the lens or prism is not an integral part of a projection system nor a light guide of the liquid crystal illumination system.

Patents under this class:
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Patent Number Title Of Patent Date Issued
4952034 Liquid crystal projection display Aug. 28, 1990
4936657 Projection type liquid-crystal video display device using a fresnel lens Jun. 26, 1990
4908702 Real-time image difference detection using a polarization rotation spacial light modulator Mar. 13, 1990
4864390 Display system with equal path lengths Sep. 5, 1989
4813771 Electro-optic switching devices using ferroelectric liquid crystals Mar. 21, 1989
4810064 Liquid crystal projection display having laser intensity varied according to beam change-of-axis speed Mar. 7, 1989
4807978 Color display device and method using holographic lenses Feb. 28, 1989
4768864 Liquid-crystal-based optical power limiter Sep. 6, 1988
4765718 Collimated light source for liquid crystal display utilizing internally reflecting light pipe collimator with offset angle correction Aug. 23, 1988
4726662 Display including a prismatic lens system or a prismatic reflective system Feb. 23, 1988
4708439 Liquid crystal display device with prism for viewing Nov. 24, 1987
4704004 Light box having a Fresnel lens Nov. 3, 1987
4701027 Display device with increased view angle Oct. 20, 1987
4686519 Multicolor picture display device Aug. 11, 1987
4674210 Liquid crystal display Jun. 23, 1987
4668071 Character generator using cathode ray tube activated liquid crystal display May. 26, 1987
4660936 Arrangement to minimize reflected ambient light in a display Apr. 28, 1987
4653867 Liquid crystal display apparatus Mar. 31, 1987
4623219 Real-time high-resolution 3-D large-screen display using laser-activated liquid crystal light valves Nov. 18, 1986
4497542 Apparatus for minimizing beam collimation sensitivity in optical instruments including liquid crystal cells Feb. 5, 1985
4367467 LCD Display mount window Jan. 4, 1983
4364639 Variable attenuation electro-optic device Dec. 21, 1982
4110014 Parallel and series electro-optic viewing and recording apparatus Aug. 29, 1978
3947091 Reflective display apparatus Mar. 30, 1976

1 2 3 4 5 6

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