发明名称 Automatic focusing device
摘要 An automatic focusing device of a camera capable of photo-taking in infrared ray has means for detecting a focus condition of an imaging lens and correction means for producing information representing a difference between a focusing point of an image formed by a visible ray and a focusing point of an image formed by an infrared ray. The imaging lens is selectively moved to an in-focus position for the visible ray or an in-focus position for the infrared ray based on the focus information from the focus detection means and the correction information from the correction means.
申请公布号 US4504135(A) 申请公布日期 1985.03.12
申请号 US19830566164 申请日期 1983.12.28
申请人 CANON KABUSHIKI KAISHA 发明人 KAWABATA, TAKASHI
分类号 G03B13/36;G02B7/28;G02B7/32;G03B3/00;(IPC1-7):G03B3/00 主分类号 G03B13/36
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