Prism assembly with three periscopes and projection lenses for a

Details Prism assembly with three periscopes and projection lenses for a Prism assembly with three periscopes and projection lenses for a

1987-10-15

1989-05-02

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353 33, 353122, 350331R, G03B 2100, G02F 113

Patent

active

048263117

ABSTRACT:
A full-color projector system is disclosed, wherein a single light valve is employed to modulate red, green and blue illumination beams in accordance with the respective primary color components of the image. Separate but proximately located red, green and blue output projection beams are provided by a prism assembly. First, second and third periscopes are provided to separate the projection beams at the output of the prism assembly and direct the respective projection beams into first, second and third teleconcentric projection lens for convergence at a projection aperture.

REFERENCES:
patent: 944787 (1909-12-01), Jumeaux
patent: 973961 (1910-10-01), Oliver
patent: 1857441 (1932-05-01), De Francisco
patent: 2028485 (1936-01-01), Wright
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4150396 (1979-04-01), Hareng et al.
patent: 4425028 (1984-01-01), Gagnon et al.
patent: 4461542 (1984-07-01), Gagnon
patent: 4552441 (1985-11-01), Dewey

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