Light valve projection system with non imaging optics for illumi

Details Light valve projection system with non imaging optics for illumi Light valve projection system with non imaging optics for illumi

1987-12-23

1990-03-27

Lazarus, Ira S.

Illumination

Light modifier

Reflector

362261, 362293, 362328, 353 31, 350628, F21V 712, F21V 900

Patent

active

049126148

ABSTRACT:
Display system includes an illumination system which utilizes a light collector in the form of a non-imaging reflector having a rectangular output aperture, a modulating device in the path of light emitted by the illumination system, and a projection lens. Three such collectors having spectrally tuned lamps therein and using rectangular LCD's as modulating devices can be used in a television projection system.

REFERENCES:
patent: 2604005 (1952-07-01), Hahn
patent: 3676667 (1972-07-01), Malifaud
patent: 3798441 (1974-03-01), Wilson
patent: 3827782 (1974-08-01), Boudouris et al.
patent: 4230095 (1980-10-01), Winston
patent: 4355350 (1982-10-01), Mader
patent: 4368963 (1983-01-01), Slotov
patent: 4370026 (1983-01-01), Dubroeucq et al.
patent: 4545651 (1985-10-01), Kato et al.
patent: 4735495 (1988-04-01), Henkes
patent: 4757431 (1988-07-01), Cross et al.
patent: 4765718 (1988-08-01), Henkes

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