Invention Grant
- Patent Title: Method of manufacturing synthetic resin lens, method of manufacturing reformed synthetic resin material and optical pickup apparatus
- Patent Title (中): 制造合成树脂透镜的方法，重整合成树脂材料的制造方法和光拾取装置
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Application No.: US12468758Application Date: 2009-05-19
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Publication No.: US08223614B2Publication Date: 2012-07-17
- Inventor: Tohru Hotta , Ryoichi Kawasaki , Hiroyuki Ichikawa
- Applicant: Tohru Hotta , Ryoichi Kawasaki , Hiroyuki Ichikawa
- Applicant Address: JP Osaka JP Tokyo
- Assignee: Sanyo Electric Co., Ltd.,Sanyo Optec Design Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.,Sanyo Optec Design Co., Ltd.
- Current Assignee Address: JP Osaka JP Tokyo
- Agency: SoCal IP Law Group LLP
- Agent Steven C. Sereboff; John E. Gunther
- Priority: JP2007-189276 20070720; JP2008-181569 20080711
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
A method of manufacturing a synthetic resin lens, comprising: adjusting a degree of change in transmittance of a lens member made of synthetic resin for a blue violet laser beam with accumulated application of the blue violet laser beam, by applying to the lens member an electromagnetic wave shorter in wavelength than the blue violet laser beam.
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