Projector

Details Projector Projector

1997-10-28

2000-12-05

Gray, David M.

Optics: image projectors

Composite projected image

353 31, 353 33, G03B 2126, G03B 2100

Patent

active

061556858

ABSTRACT:
An optical device includes four prisms joined into one body to combine light beams, a first type of multilayer coating being provided between joining surfaces of the four prisms, and a second type of multilayer coating being provided on at least one non-joining surface of the four right-angle prisms. Each prism bears the first type of multilayer coating and the second type of multilayer coating on two or less surfaces thereof. The optical device is further provided with liquid crystal image panels to combine optical images and project a combined optical image to a screen.

REFERENCES:
patent: 5097323 (1992-03-01), Sato et al.
patent: 5105265 (1992-04-01), Sato et al.

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