Invention Grant
- Patent Title: Wholly aromatic liquid crystal polyester resin composition and optical pickup lens holder
- Patent Title (中): 全芳族液晶聚酯树脂组合物和光学拾光镜头架
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Application No.: US11578980Application Date: 2005-04-19
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Publication No.: US07790786B2Publication Date: 2010-09-07
- Inventor: Satoshi Murouchi , Toshio Nakayama , Yoshikuni Yamada
- Applicant: Satoshi Murouchi , Toshio Nakayama , Yoshikuni Yamada
- Applicant Address: JP Tokyo
- Assignee: Nippon Oil Corporation
- Current Assignee: Nippon Oil Corporation
- Current Assignee Address: JP Tokyo
- Agency: Weingarten, Schurgin, Gagnebin & Lebovici LLP
- Priority: JP2004-126655 20040422; JP2005-106295 20050401
- International Application: PCT/JP2005/007761 WO 20050419
- International Announcement: WO2005/103150 WO 20051103
- Main IPC: C08J9/32
- IPC: C08J9/32

Abstract:
An optical pickup lens holder which comprises a wholly aromatic liquid crystalline polyester resin composition comprising 97 to 45 mass percent of a wholly aromatic liquid crystalline polyester having a melting point of 320° C. or higher, 3 to 50 mass percent of an inorganic spherical hollow material having an aspect ratio of 2 or less and 0 to 30 mass percent of an inorganic filler having as aspect ratio of 4 or more, wherein the percentages are made to 100 mass percent in total, and having a specific gravity in the range of 1.00 to 1.35. The lens holder exhibits excellent characteristics, while retaining good heat resistance in soldering and good processability inherent in a liquid crystalline polyester, exhibits high injection processability and high adaptability to a soldering process even in a sheet form lens holder having a thin part and an opening port.
Public/Granted literature
- US20070173565A1 Wholly aromatic liquid crystal polyester resin composition and optical pickup lens holder Public/Granted day:2007-07-26
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