Rear projection screen

Details Rear projection screen Rear projection screen

1989-03-08

1990-06-26

Wintercorn, Richard A.

G03B 2160

Patent

active

049366521

ABSTRACT:
A transparent rear-light projection screen with V-shaped grooves is described, where the rear side of the screen, i.e. the side turned towards the projector is supplied with outwardly extending, elongate parallel lenses, the focal point of which is congruent with the front plane of the screen which is made up of outwardly extending elongate projections on whose tops the light can emit, and where--between the tops of the projections--there are grooves which are covered with material impenetrable to light, such as black color, for the purpose of increasing the contrast.

REFERENCES:
patent: 2618198 (1952-11-01), Luboshez
patent: 2738706 (1955-03-01), Thompson, Jr.
patent: 3279314 (1965-10-01), Miller
patent: 4469402 (1984-09-01), Yata et al.

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