Invention Grant
- Patent Title: Complex optical element and optical pickup
- Patent Title (中): 复杂的光学元件和光学拾取器
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Application No.: US11889674Application Date: 2007-08-15
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Publication No.: US07920455B2Publication Date: 2011-04-05
- Inventor: Katsuhiko Hayashi , Jun Murata , Yasuhiro Tanaka , Michihiro Yamagata
- Applicant: Katsuhiko Hayashi , Jun Murata , Yasuhiro Tanaka , Michihiro Yamagata
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-226241 20060823
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
A complex optical element includes a first optical portion and a second optical portion which are made of materials different from each other. The second optical portion is bonded to an optical functional face of the first optical portion. A concavoconvex face part is formed at the central part of the bond area between the first optical portion and the second optical portion.
Public/Granted literature
- US20080049587A1 Complex optical element and optical pickup Public/Granted day:2008-02-28
Information query
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