Rear projection screen system

Details Rear projection screen system Rear projection screen system

1977-02-17

1979-03-13

Wintercorn, Richard A.

G03B 2156

Patent

active

041439430

ABSTRACT:
A rear projection screen which eliminates speckle by only linear diffuser surface motion. One of a pair of closely spaced plates of the rear projection screen is maintained fixed while the other plate is driven such that it has a linear motion relative to the fixed plate. The plates are optically transparent and have their facing surfaces etched or coated to provide adjacent diffusing surfaces. The driven screen is supported by L-shaped spring metal straps thereby providing a strong plate support assembly which can operate at low noise levels and with low drive-power requirements.

REFERENCES:
patent: 1969909 (1934-08-01), Simjian
patent: 2029500 (1936-02-01), O'Brien
patent: 2348818 (1944-05-01), Jacobson

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