发明授权
- 专利标题： Distance information judging circuit for focus detecting apparatus
- 专利标题（中）： 焦点检测装置的距离信息判断电路
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申请号： US76551申请日： 1979-09-18
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公开(公告)号： US4269491A公开(公告)日： 1981-05-26
- 发明人: Nobuyoshi Hagyuda , Hiroaki Tanaka
- 申请人： Nobuyoshi Hagyuda , Hiroaki Tanaka
- 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
- 主分类号： G01C3/32
- IPC分类号： G01C3/32 ; G02B7/30 ; G03B3/10
摘要：
A distance information judging circuit for focus detecting apparatus comprises memory means for storing a distance information signal obtained from the focus detecting apparatus for each scan of an optical system,, and coincidence signal generating means adapted for comparing the distance information signal obtained from the focus detecting apparatus in a succeeding scan of the optical system with the distance information signal stored in the memory means and for generating a coincidence signal when the distance information signals coincide each other.
公开/授权文献
- USD401486S Earring tool 公开/授权日：1998-11-24
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