Method and apparatus using liquid crystal light valve to...

Details Method and apparatus using liquid crystal light valve to... Method and apparatus using liquid crystal light valve to...

2007-05-08

2007-05-08

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S226000, C250S205000, C349S106000, C359S245000

Reexamination Certificate

active

10961601

ABSTRACT:
In one embodiment, light is detected using a photodetector. If the detected light is causing the photodetector to saturate, one or more liquid crystal light valves are adjusted to filter the amount of incident light on the photodetector.

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patent: 6630801 (2003-10-01), Schuurmans
http://www.cs.mtu.edu, “Neutral Density Filters”, 4 pages, at least as early as Jul. 2, 2004.
Jeff Tyson, “How LCDs Work”, http://www.electronics.howstuffworks.com, 8 pages, at least as early as Jul. 6, 2004.

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