Multi-screen projector

Details Multi-screen projector Multi-screen projector

1994-08-15

1995-11-14

Wintercorn, Richard A.

Optical: systems and elements

Projection screen

With reflector or additional screen

359457, G03B 2156

Patent

active

054672210

ABSTRACT:
A multi-screen projector having unit module projectors stacked at two higher and lower stages, each unit module projector having a screen with a Fresnel sheet unit, a prism sheet unit, and a lenticular sheet unit. By the functions of the Fresnel sheet unit and the prism sheet unit, main output light from higher and lower screens is converged to substantially the same target point. Only one type of metal molds is required for the Fresnel sheet unit as well as the prism sheet unit, thereby reducing the manufacturing cost of the multi-screen projector.

REFERENCES:
patent: 4919518 (1990-04-01), Ogino
patent: 4961642 (1990-10-01), Ogino
patent: 5085495 (1992-02-01), Iwahara et al.

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