Screen for a rear projection type television set

Details Screen for a rear projection type television set Screen for a rear projection type television set

1988-09-09

1990-04-24

Wintercorn, Richard A.

G03B 2160

Patent

active

049195158

ABSTRACT:
A screen for a rear projection type television set including a Fresnel sheet and a lenticular sheet. Horizontal diffusion of projection light is carried out by a plurality of lenticular lenses which are arranged on the incident surface of the lenticular sheet in parallel with black stripes arranged on the emergent surface of the lenticular sheet. Vertical diffusion of the projection light is effected by a plurality of spherical or aspherical lenticular lenses which are arranged on the incident surface of the Fresnel sheet in a direction perpendicular to the pitch direction of the lenticular lenses formed on the lenticular sheet. This configurations provides a large visual field angle in both the horizontal and vertical directions.

REFERENCES:
patent: 4752116 (1988-06-01), Sekiguchi

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