Rear-projection screen

Details Rear-projection screen Rear-projection screen

1989-05-31

1991-02-19

Wintercorn, Richard A.

G03B 2160

Patent

active

049938061

ABSTRACT:
A transparent rear-projection screen is described where the side facing the projectors has a lens surface for parallelling of the light, and where the front side has vertical upright forerunning lenses to upread the light in a horizontal plane, and where between these lenses there are grooves with a light absorbing material to increase the contrast of the projected picture.

REFERENCES:
patent: 4418986 (1983-12-01), Yata
patent: 4573764 (1986-03-01), Bradley
patent: 4730897 (1988-03-01), McKechnie et al.
patent: 4923280 (1990-05-01), Clausen et al.
patent: 4927233 (1990-05-01), Nakanishi et al.
patent: 4936652 (1990-06-01), Clausen et al.

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