Non-symmetrical light stop

Details Non-symmetrical light stop Non-symmetrical light stop

2005-01-18

2005-01-18

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With field curvature shaping

C359S738000

Reexamination Certificate

active

06844981

ABSTRACT:
In a projection display system for example, a projection lens includes a non-radially symmetrical light stopped that is painted or otherwise applied directly to the surface of an optical lens element of the projection lines.

REFERENCES:
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patent: 5662401 (1997-09-01), Shimizu et al.
patent: 6104545 (2000-08-01), Tsuchida
patent: 6634756 (2003-10-01), Shimizu
patent: 6637894 (2003-10-01), Dewald et al.
patent: 20020051094 (2002-05-01), Makita

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