Rear projection screen with reduced speckle

Details Rear projection screen with reduced speckle Rear projection screen with reduced speckle

1995-04-06

1998-06-02

Metjahic, Safet

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359452, 359455, G03B 2160

Patent

active

057609551

ABSTRACT:
A rear projection screen which includes a front lenticular surface, a diffusion region behind the lenticular surface, a non-diffusion region behind the diffusion region, and a rear phase grating surface, when used with high magnification projection systems, exhibits reduced speckle when compared to other rear projection screen without such a grating.

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D. Gabor, IBM, J. Res. Develop., Sep. '79, pp. 509-514.
S. Lowenthal et al, J. Opt. Soc. Am., pp. 847-851 (1971).
E.G. Rawson et al, J. Opt. Soc. Am, pp. 1290-1294 (1976).
L. G. Shirley et al, J. Opt. Soc. Am. A, pp. 765-781 (1989).

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