Liquid crystal cells – elements and systems – Particular structure – Detector of liquid crystal temperature
Reexamination Certificate
2006-07-11
2006-07-11
Paik, Steven S. (Department: 2876)
Liquid crystal cells, elements and systems
Particular structure
Detector of liquid crystal temperature
C349S161000, C353S052000, C345S102000
Reexamination Certificate
active
07075596
ABSTRACT:
A liquid crystal projector includes a reference temperature sensor, a comparison temperature sensor, and a shut-off unit for shutting off the power to a light source lamp for backlight when the difference between a temperature sensed by the reference temperature sensor and a temperature sensed by the comparison temperature sensor is more than a predetermined value. Used as the reference temperature sensor is a temperature sensor for sensing the ambient temperature of the main body of the liquid crystal projector, and used as the comparison temperature sensor is a temperature sensor for sensing the ambient temperature of a liquid crystal panel. Alternately, used as the reference temperature sensor is a temperature sensor for sensing the ambient temperature of the main body of the liquid crystal projector, and used as the comparison temperature sensor is a temperature sensor for sensing the ambient temperature of the light source lamp for backlight.
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Copy of Translation of Noitce of Rejection dated Dec. 7, 2005 for the corresponding Japanese patent application.
Koyama Kumiko C.
Paik Steven S.
Sanyo Electric Co,. Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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