Lens system for projection television receivers

Details Lens system for projection television receivers Lens system for projection television receivers

1989-10-05

1991-07-09

Sugarman, Scott J.

350412, G02B 1318

Patent

active

050299930

ABSTRACT:
An optical system of a projection television receiver for projecting pictures from a picture tube onto a screen, comprising a fluorescent face constituting the tube face of the receiver tube having a nonspherical shape in such a direction as to compensate the curve of the image face of the projected picture on the screen, and further comprising lenses arranged from the screen side to the tube face of the picture tube in the order of:

REFERENCES:
patent: 4682862 (1987-07-01), Moskovich
patent: 4685774 (1987-08-01), Moskovich
patent: 4776681 (1988-10-01), Moskovich
patent: 4810075 (1989-03-01), Fukuda

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