Invention Grant
- Patent Title: Optical pickup apparatus, optical element for optical pickup apparatus and producing method of optical element
- Patent Title (中): 光拾取装置，光拾取装置用光学元件及光学元件的制造方法
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Application No.: US10884916Application Date: 2004-07-07
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Publication No.: US07545724B2Publication Date: 2009-06-09
- Inventor: Yuichi Atarashi , Kiyoshi Yamashita , Yasuo Taima
- Applicant: Yuichi Atarashi , Kiyoshi Yamashita , Yasuo Taima
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Opto, Inc.
- Current Assignee: Konica Minolta Opto, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JP2003-195956 20030711; JP2003-201779 20030725
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
The present invention relates to an optical element for an optical pickup device, wherein the optical element is produced by molding a resin material, in which inorganic particles having a diameter of not more than 30 nm are dispersed in a plastic resin, an optical pickup device using the optical element, and a producing method of the optical element.
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