Optics: image projectors – Plural projection paths with single light source
Patent
1988-07-21
1990-07-31
Miller, Stanley D.
Optics: image projectors
Plural projection paths with single light source
350333, 350337, 350341, 353122, 353DIG5, 340784, G02F 113, G03B 2100
Patent
active
049445782
ABSTRACT:
A display including a liquid crystal cell. The cell includes a liquid crystal material, a plurality of electrodes, and first and second polarizers. The first polarizer is located at a viewing side of the cell such that the vibration direction of light polarized thereby is non-parallel to the optic axis of the liquid crystal material as its front boundary layer. The second polarizer is located on a side of the cell remote from the first polarizer wherein the vibration direrction of light polarized thereby forms an angle with respect to the vibration direction of light polarized by the first polarizer. The liquid crystal is responsive to different magnitudes of the electric field for the display of perceived color differences. The display is interfaced with a computer via circuitry which converts color display information produced by the computer to drive signals for applying the electric field in the different magnitudes across selected ones of the electrodes in order to display the perceived color differences. The display is part of a panel for use with a projector.
REFERENCES:
patent: 3844650 (1974-10-01), Nicholson et al.
patent: 3975726 (1976-08-01), Kawakami
patent: 4154007 (1979-05-01), Judd
patent: 4194833 (1980-03-01), Lester et al.
patent: 4222641 (1980-09-01), Stolov
patent: 4294524 (1981-10-01), Stolov
patent: 4349817 (1982-09-01), Hoffman et al.
patent: 4365869 (1982-12-01), Hareng et al.
patent: 4368963 (1983-01-01), Stolov
patent: 4372639 (1983-02-01), Johnson
patent: 4386836 (1983-06-01), Aoki et al.
patent: 4403216 (1983-09-01), Yokoi
patent: 4409583 (1983-10-01), Dahan et al.
patent: 4449123 (1984-05-01), Muranaga
patent: 4514042 (1985-04-01), Nukii et al.
patent: 4541690 (1985-09-01), Clerc
patent: 4582396 (1986-04-01), Bos et al.
patent: 4596445 (1986-06-01), Fergason
patent: 4617563 (1986-10-01), Fujiwara et al.
patent: 4634229 (1987-01-01), Amstutz et al.
patent: 4662720 (1987-05-01), Fergason
patent: 4664482 (1987-05-01), Kando et al.
patent: 4716403 (1987-12-01), Morozumi
patent: 4742346 (1988-05-01), Gillette et al.
patent: 4763993 (1988-08-01), Vogeley et al.
patent: 4812034 (1989-03-01), Mochizuki et al.
patent: 4832461 (1989-05-01), Yamagishi et al.
patent: 4844569 (1989-07-01), Wado et al.
patent: 4846694 (1989-07-01), Ezhardt
patent: 4880303 (1989-11-01), Grunwald
Connolly, W. C., "Apparatus for Teaching Physics", Physics Teacher, Sep. 1985.
IBM Technical Disclosure Bulletin, vol. 23, No. 9, 2/81.
Becchetti, F. D. and Dockrill, A. G., "LCD Devices for Overhead Projectors", AM.J.Phys. 52 (5), May 1984.
Dresser, M. J., "Digital Displays for the Overhead Projector", Am. J. Phys. 52(4), Apr. 1984.
Scheffer, T. J., "Direct-Multiplexed Liquid Crystal Displays", Society for Information Display, May 11 and 15, 1987, New Orleans, LA (Seminar No. S-4).
ASCII Corp./Nippon Gakki Co., Ltd., "V6355 LCDC Technical Data Book".
ASCII Corp./Nippon Gakki Co., Ltd., "PCDC V6366 Applilcation Manual".
Scheuble, B. S., "Liquid Crystal Displays with High Information Content", SID, 1988 Seminar/Literature Notes, May 27, 1988, Publ. #ISSN 08 87-915X.
"Great Graphics", PC Magazine, vol. 7, No. 5, Mar. 15, 1988.
Telex Communications, Inc., "Product Profile", 2/87.
Chisholm Associates' Video Image Projector ("VIP"), Photographs of the VIP.
Uchida, T., "Multicolored Liquid Crystal Displays", Optical Engineering, May/Jun. 1984, vol. 23, No. 3.
Duong Tai V.
Miller Stanley D.
Telex Communications
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