Adjustable liquid crystal blazed grating deflector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 1, 2003
Grant Date -
Jan 10, 2002
app pub date -
Mar 27, 2001
filing date -
Mar 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system of beam steering using electrical operation. A first system provides a grating and a liquid crystal material. When the liquid crystal is unenergized, there is a mismatch between the liquid crystal and the grating, causing the grating to diffract the light in a specified direction. The liquid crystal is energized to match its index of refraction to the grating. Then, the light is not diffracted by the grating, and hence travels in a different direction then it would when the liquid crystal was not energized. Another, finer system, forms electrically generated gratings using a liquid crystal material.
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International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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