Single panel color projection video display improved scanning

Details Single panel color projection video display improved scanning Single panel color projection video display improved scanning

1994-03-25

1995-04-25

Mancuso, Joseph

Television

Video display

Projection device

348766, 359209, H04N 914

Patent

active

054103703

ABSTRACT:
A color projection video system utilizing only a single light valve. A white light source is separated into red, green and blue bands. Scanning optics in the form of three prisms coaxially mounted for rotation cause the RGB bands to be sequentially scanned across a light valve, such as a transmission LCD panel. Prior to each color passing over a given row of panels on the light valve, that row will be addressed, by the display electronics with the appropriate color content of that portion of the image which is being displayed. The image is projected by a projection lens onto a viewing surface, such as a screen. The sequence of light bands occurs so quickly as to give the viewer an appearance of simultaneous full color.

REFERENCES:
patent: 3658428 (1972-04-01), Voigtlaender-Tetzner
patent: 4024573 (1977-05-01), Carnes
patent: 4118109 (1978-10-01), Crawford et al.
patent: 4168126 (1979-09-01), Altman
patent: 4319807 (1982-03-01), Horton
patent: 4940312 (1990-07-01), Hofmann

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