Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Reexamination Certificate
2008-01-08
2008-01-08
Dang, Hung X. (Department: 2873)
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
C359S259000, C359S663000, C359S708000, C348S758000
Reexamination Certificate
active
10537185
ABSTRACT:
A lens system for use in a two-stage projection system that relays light output from a first imager on a pixel-by-pixel basis onto a second imager (e.g. an LCOS). The lens system includes a double gauss lens set having a distortion of less than about 0.015% with at least about 90% of the light energy of a specific pixel projected within about a 15.4 micrometer square. Thus a projection system that enhances the contrast ratio for video images, particularly in the dark state, and reduces contouring artifacts, can be achieved.
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Search Report Dated Apr. 5, 2004.
Drazic Valter
Hall, Jr. Estill Thone
Dang Hung X.
Fried Harvey D.
Laks Joseph J.
Martinez Joseph
Thomson Licensing
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