发明申请
- 专利标题: Lens and optical pickup device
- 专利标题(中): 镜头和光学拾取装置
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申请号: US11481598申请日: 2006-07-06
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公开(公告)号: US20070008630A1公开(公告)日: 2007-01-11
- 发明人: Tohru Hotta , Ryouichi Kawasaki
- 申请人: Tohru Hotta , Ryouichi Kawasaki
- 申请人地址: JP Osaka
- 专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人地址: JP Osaka
- 优先权: JP2005-199761 20050708
- 主分类号: G02B7/02
- IPC分类号: G02B7/02
摘要:
A lens is provided with a reflective annular zone face that is approximately perpendicular to the lens optical axis, and tilt of the reflective annular zone face is set to be equivalent to coma aberration resulting from the lens.
公开/授权文献
- US07554751B2 Lens and optical pickup device 公开/授权日:2009-06-30
信息查询
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B7/00 | 光学元件的安装、调整装置或不漏光连接 |
G02B7/02 | .用于透镜 |