Optical system having photoconductive members and optical means

Details Optical system having photoconductive members and optical means Optical system having photoconductive members and optical means

1991-04-03

1992-07-14

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 66, 359 72, 359 93, 358 61, G02F 113, H04N 913

Patent

active

051308266

ABSTRACT:
There is disclosed an optical system for a color picture display having three spatial light modulators of reflecting type corresponding to an optical image of one of three primary colors by photoelectric effect and photomodulation effect, a writing device for guiding writing lights each carrying the optical image of one of the colors to each device, a reading device for guiding reading lights each in the region of wavelength of one of the colors to each device and a composing device for composing a composed reading light of the reading lights which are emitted from the optical devices respectively after optically modulated. The optical system comprises an optical apparatus shared by the reading device and the composing device, having first, second and third prisms, a first dichroic filter provided between the first and the second prisms and a second dichroic filter provided between the second and the third prisms.

REFERENCES:
patent: 4461542 (1984-07-01), Gagnon
patent: 4690526 (1987-09-01), Ledebuhr
patent: 4786146 (1988-11-01), Ledebuhr
patent: 4904061 (1990-02-01), Aruga
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patent: 4989076 (1991-01-01), Owada et al.
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patent: 5028121 (1991-07-01), Baur et al.
patent: 5046828 (1991-09-01), Takanashi et al.
patent: 5067799 (1991-11-01), Gold et al.
Ledebuhr, "Full-Color Single-projection-lens liquid Crystal light valve projector", SID 86 Digest, 1986, pp. #379-382.

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