Projection screen with movable shutter

Details Projection screen with movable shutter Projection screen with movable shutter

1999-02-04

2000-08-29

Metjahic, Safet

Optical: systems and elements

Projection screen

Moving during projection

359449, 359461, G03B 2156

Patent

active

061116939

ABSTRACT:
A projection screen for displaying projected images with a movable shutter that can be positioned and opened at any location within a large rectangular area of the surface of the projection screen. Physical objects and light signals may pass through the open shutter. When the shutter is closed, the projection screen appears to a viewer as a continuous, unbroken, vertical reflective surface.

REFERENCES:
patent: 570255 (1896-10-01), Kerner
patent: 1211200 (1917-01-01), McCormick
patent: 1954656 (1934-04-01), Vallen
patent: 3655203 (1972-04-01), Gretzky
patent: 4962420 (1990-10-01), Judenich
patent: 5080481 (1992-01-01), Martin et al.
patent: 5548356 (1996-08-01), Portman
patent: 5757544 (1998-05-01), Tabata et al.

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