发明名称 Automatic focusing device
摘要 An automatic focusing device, in which a focus lens is driven for tracking an object-in-motion to obtain an in-focus state, based upon a focus prediction that is executed from repeated distance measurements. Tracking is continued even if the position of the focus lens falls into the predetermined focus allowance, so as to make it possible to take a well-focused photograph at any time.
申请公布号 US5276476(A) 申请公布日期 1994.01.04
申请号 US19910800238 申请日期 1991.11.29
申请人 ASAHI KOGAKU KOGYO KABUSHIKI KAISHA 发明人 UENAKA, YUKIO
分类号 G02B7/08;G02B7/28;(IPC1-7):G03B13/36 主分类号 G02B7/08
代理机构 代理人
主权项
地址
您可能感兴趣的专利