发明授权
- 专利标题： Finder system
- 专利标题（中）： Finder系统
-
申请号： US603197申请日： 1984-04-23
-
公开(公告)号： US4595270A公开(公告)日： 1986-06-17
- 发明人: Yasuyuki Yamada , Kazuo Fujibayashi , Yasuhisa Sato , Hideo Yokota
- 申请人： Yasuyuki Yamada , Kazuo Fujibayashi , Yasuhisa Sato , Hideo Yokota
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX58-63681[U] 19830427
- 主分类号： G03B13/12
- IPC分类号： G03B13/12 ; G02B13/18 ; G02B13/22 ; G02B15/06 ; G02B25/00 ; G03B13/26 ; G03B13/10
摘要：
The disclosed finder system includes, from front to rear, a first objective lens of negative power, an optical member having a half-mirror, an eyepiece of positive power and a viewfinder frame arranged near the eyepiece to be observed by the eyepiece with the aid of a reflection from the half-mirror. The finder system satisfies the condition 0.2
公开/授权文献
- US4001572A Dustproof and airtight luminaires 公开/授权日：1977-01-04
信息查询
