Invention Grant
- Patent Title: Liquid crystal optical modulation element and optical head device
- Patent Title (中): 液晶光调制元件和光头装置
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Application No.: US11618177Application Date: 2006-12-29
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Publication No.: US07714977B2Publication Date: 2010-05-11
- Inventor: Hiroki Hotaka , Hiroshi Kumai , Makoto Hasegawa , Yayoi Yamamori
- Applicant: Hiroki Hotaka , Hiroshi Kumai , Makoto Hasegawa , Yayoi Yamamori
- Applicant Address: JP Tokyo
- Assignee: Asahi Glass Company, Limited
- Current Assignee: Asahi Glass Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2004-191257 20040629
- Main IPC: G02F1/13
- IPC: G02F1/13 ; C09K19/00
Abstract:
A liquid crystal optical modulation element to modulate a laser beam having a wavelength of at most 500 nm, which contains a layer of a liquid crystal composition sandwiched between a pair of transparent substrates facing each other, wherein each transparent substrate has an electrode and an alignment film having a polyimide on the surface which faces the other transparent substrate, the alignment film and the liquid crystal composition are in contact with each other, and the liquid crystal composition contains at least one antioxidant.
Public/Granted literature
- US20070104895A1 LIQUID CRYSTAL OPTICAL MODULATION ELEMENT AND OPTICAL HEAD DEVICE Public/Granted day:2007-05-10
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