Color corrector for embedded prisms

Details Color corrector for embedded prisms Color corrector for embedded prisms

1987-12-22

1990-01-02

Henry, Jon W.

350286, 350395, 350337, G02B 504, G02B 718, G02F 113

Patent

active

048909017

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: 2792740 (1957-05-01), Haynes
patent: 4514050 (1985-04-01), Stites
patent: 4541688 (1985-09-01), Watt et al.
patent: 4597634 (1986-07-01), Steenblik

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