- 专利标题： Eyepiece optical system, optical apparatus and method for manufacturing eyepiece optical system
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申请号： US16029492申请日： 2018-07-06
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公开(公告)号： US10527839B2公开(公告)日： 2020-01-07
- 发明人: Taku Matsuo , Motohisa Mouri , Yukio Kubota , Takuya Sato
- 申请人： NIKON CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Shapiro, Gabor and Rosenberger, PLLC
- 优先权： JP2012-222537 20121004
- 主分类号： G02B25/00
- IPC分类号： G02B25/00 ; G02B15/14 ; G02B9/12 ; G02B9/00 ; G02B13/18
摘要：
Provided is an eyepiece optical system including at least three lenses disposed in order from an observation object (Ob) along an optical axis. A final lens disposed closest to an eye point (EP) (corresponds to the third lens (L3) in FIG. 1) is fixed when adjusting the diopter, and the following conditional expressions (1) and (2) are satisfied: 2.2
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