Color projection system with a color correction wedge

Details Color projection system with a color correction wedge Color projection system with a color correction wedge

1989-10-11

1990-07-24

Henry, Jon W.

Optics: image projectors

Composite projected image

Multicolor picture

350331R, 350168, 350286, 350395, G03B 2100, G02B 504, G02F 113

Patent

active

049431552

ABSTRACT:
An embedded polarizing beamsplitter employed in a liquid crystal light valve color projector introduces lateral chromatic aberration of complex distribution that degrades contrast and resolution of the projected image. Color correction is provided to substantially eliminate any noticeable lateral chromatic aberration by replacing the output window of the prism with an optical wedge made of the same material as the embedded prism plate of the beamsplitter.

REFERENCES:
patent: 2403731 (1946-07-01), MacNeille
patent: 2792740 (1957-05-01), Haynes
patent: 4343535 (1982-08-01), Bleha
patent: 4514050 (1985-04-01), Stites
patent: 4541688 (1985-09-01), Watt et al.
patent: 4597634 (1986-07-01), Steenblik
patent: 4650286 (1987-03-01), Koda et al.

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