发明授权
- 专利标题: Real-image type optical finder
- 专利标题(中): 实像式光学取景器
-
申请号: US095019申请日: 1998-06-10
-
公开(公告)号: US5936775A公开(公告)日: 1999-08-10
- 发明人: Tetsuya Abe
- 申请人: Tetsuya Abe
- 申请人地址: JPX Tokyo
- 专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-159931 19970617
- 主分类号: G02B23/14
- IPC分类号: G02B23/14 ; G03B13/06 ; G02B25/00
摘要:
In a real-image type optical finder, a positive first lens group (objective lens group), a positive second lens group (relay lens group and image erecting optical system), and a positive third lens group (eyepiece lens group), are included in that order from the object side. The optical system satisfies the following condition (1):5.0
公开/授权文献
- USD430911S Toy snail 公开/授权日:2000-09-12
信息查询