Vertical color shift correction in a rear projection television

Details Vertical color shift correction in a rear projection television Vertical color shift correction in a rear projection television

1983-04-21

1985-10-01

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358231, H04N 931

Patent

active

045449465

ABSTRACT:
A rear projection television receiver incorporates red, green and blue-image producing kinescopes and a screen which includes a prism lens arrangement. The prism lens comprises a number of prism lens elements made up of a plurality of lens surfaces or facets. The prism lens forms the vertical audience envelope of the screen, which results from a combination of the vertical audience envelope contributed by the differently angled facets. Planes normal to the horizontal centerline of the faceplates of the red and blue image-producing kinescopes are displaced with respect to a plane normal to the horizontal centerline of the faceplate of the green image-producing kinescope in order to correct vertical color shift.

REFERENCES:
patent: 3634617 (1972-01-01), Welford
patent: 4034907 (1977-10-01), Itoh
patent: 4163990 (1979-08-01), Hodges
patent: 4210928 (1980-07-01), Ohmori et al.
patent: 4432010 (1984-02-01), Oguino

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