Liquid crystal cells – elements and systems – Particular structure – Holder – support – frame – or housing
Reexamination Certificate
2011-06-14
2011-06-14
Robinson, Mark A (Department: 2883)
Liquid crystal cells, elements and systems
Particular structure
Holder, support, frame, or housing
C349S005000, C349S113000, C353S119000, C359S267000, C359S318000
Reexamination Certificate
active
07961269
ABSTRACT:
An optical modulation element unit is disclosed which employs a film-type optical function member and a reflective optical modulation element and allows dust prevention for the reflective optical modulation element while preventing an increased number of parts other than optically required parts. The optical modulation element unit includes a light-transmissive substrate, a film-type optical function member attached to the light-transmissive substrate, a reflective optical modulation element separately placed from the light-transmissive substrate, a cover member which surrounds a space between the light-transmissive substrate and the reflective optical modulation element, and a holding member which holds the light-transmissive substrate. The holding member has a guide portion which guides an air flow to a space along a surface of the light-transmissive substrate, the surface being a surface on the side opposite to the reflective optical modulation element.
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Extended European Search Report issued in corresponding EP 06011257.0-2209 dated Aug. 21, 2007.
Koyama Takehiro
Miura Toru
Tanaka Hidetomo
Arendt Paisley L
Canon Kabushiki Kaisha
Robinson Mark A
Rossi Kimms & McDowell LLP
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