Rear projection screen with reduced speckle

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

1997-08-18

2000-11-14

Gray, David M.

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359452, 359455, G03B 2160

Patent

active

061478016

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.

REFERENCES:
patent: 4184746 (1980-01-01), Coale
patent: 5005945 (1991-04-01), Van De Ven
patent: 5064273 (1991-11-01), Lee
patent: 5066099 (1991-11-01), Yoshida et al.
patent: 5206761 (1993-04-01), Ogino

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