Optical system for color image projecting apparatus

Details Optical system for color image projecting apparatus Optical system for color image projecting apparatus

H - Electricity

04

N

88/52, 88/65, 88

H04N 5/74 (2006.01) G02B 27/10 (2006.01) G03B 21/28 (2006.01) H04N 9/31 (2006.01)

Patent

CA 1042246

ABSTRACT OF THE DISCLOSURE A color image projecting apparatus having three cathode ray tubes which produce images different in color and two projecting lenses. A first primary color image reproduced on a first cathode ray tube is projected on a screen through a first projecting lens, and second and third primary color images reproduced on second and third cathode ray tubes are synthesized by a dichroic mirror and then projected on the screen through a second projecting lens. In this case, the projecting axes of the first and second projecting lenses are so arranged to converge two images passed therethrough on the screen.

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