Collapsible rear/front projection screen assembly

Details Collapsible rear/front projection screen assembly Collapsible rear/front projection screen assembly

1980-05-14

1982-04-06

Wintercorn, Richard A.

G03B 2156

Patent

active

043233015

ABSTRACT:
A collapsible and portable screen assembly which is capable when erected of acting either as a rear or front projection screen in conjunction with a slide or movie projector. The assembly is constituted by a flexible sheet of thin translucent synthetic plastic material having white pigment incorporated therein, the sheet surface being embossed to define myriad reflective facets. The sheet is framed within a continuous tubular loop having a rectangular formation and provided with a valve permitting inflation or deflation thereof. When the loop is inflated, the sheet assumes a planar form and functions either as a reflective diffuser for front projection or as a transmissive diffuser for rear projection. When the loop is deflated, the assembly may be folded into a compact package.

REFERENCES:
patent: 3720455 (1973-03-01), Sahlin
patent: 3846011 (1974-11-01), Stein

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