发明授权
US4842388A Single optical lense with diffraction limit converging capability and
wide field angle
失效
具有衍射极限收敛能力和宽视场角的单光学透镜
- 专利标题: Single optical lense with diffraction limit converging capability and wide field angle
- 专利标题(中): 具有衍射极限收敛能力和宽视场角的单光学透镜
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申请号: US60618申请日: 1987-06-11
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公开(公告)号: US4842388A公开(公告)日: 1989-06-27
- 发明人: Yasuhiro Tanaka , Yasuo Nakajima , Yoshitomi Nagaoka
- 申请人: Yasuhiro Tanaka , Yasuo Nakajima , Yoshitomi Nagaoka
- 申请人地址: JPX
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX61-155383 19860702
- 主分类号: G02B13/00
- IPC分类号: G02B13/00 ; G02B3/04 ; G02B13/18
摘要:
A single lens having first and second aspherical surfaces each having a positive power is usable for, an objective lens of an optical pickup for an optical recording medium. The lens satisfies the following conditions:0.1
公开/授权文献
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