发明授权
- 专利标题: Objective lens
- 专利标题(中): 物镜
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申请号: US500808申请日: 1983-06-03
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公开(公告)号: US4531815A公开(公告)日: 1985-07-30
- 发明人: Kunio Konno , Masashi Tanaka , Hiroshi Ohki
- 申请人: Kunio Konno , Masashi Tanaka , Hiroshi Ohki
- 申请人地址: JPX Tokyo
- 专利权人: Nippon Kogaku K. K.
- 当前专利权人: Nippon Kogaku K. K.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX57-98685 19820609
- 主分类号: G02B13/00
- IPC分类号: G02B13/00 ; G02B9/14 ; G02B13/24 ; G02B21/02
摘要:
An objective lens has a positive first lens disposed at a position most distant from an object surface, a meniscus-shaped second lens disposed on the object side of the first lens and having its convex surface facing the object side, and a positive third lens disposed on the object side of the second lens. The objective lens satisfies the following conditions:0.9
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