Rear projection screen and rear projection system provided with

Details Rear projection screen and rear projection system provided with Rear projection screen and rear projection system provided with

1987-04-09

1988-08-09

Wintercorn, Richard A.

G03B 2160

Patent

active

047623934

ABSTRACT:
The vertical viewing angle of a rear projection screen having a large horizontal viewing angle and good color correction due to the special shape of the light dispersing elements provided on the front side of the plate is increased by elements provided on the rear side and extending in a direction perpendicular to the front side elements. The latter are preferably total internal reflection elements, while the former are not. A bulk diffusor may be largely or completely dispensed with.

REFERENCES:
patent: 2480031 (1949-08-01), Kellogg
patent: 3830556 (1974-08-01), Bratkowski
patent: 4374609 (1983-02-01), Lange
patent: 4469402 (1984-09-01), Yata et al.
patent: 4536056 (1985-08-01), Oguino
patent: 4548469 (1985-10-01), Inoue et al.
patent: 4561720 (1985-12-01), Clausen et al.
patent: 4573764 (1986-03-01), Bradley
patent: 4674836 (1987-06-01), Yata et al.
patent: 4679900 (1987-07-01), McKechnie et al.

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