发明名称 Focus detection device
摘要 A focus detection device for a camera, especially for a single lens reflex camera is disclosed. The focus detection device provides a light measuring means for measuring the color temperature of light beams being incident thereinto and a correction means for correcting the color temperature of said incident light for focus detection so as to have a predetermined constant color temperature. This correction removes possible errors in focus detection due to the chromatic aberration of an objective lens.
申请公布号 US4746948(A) 申请公布日期 1988.05.24
申请号 US19860877782 申请日期 1986.06.24
申请人 MINOLTA CAMERA KABUSHIKI KAISHA 发明人 MATSUI, TORU
分类号 G02B7/38;G02B3/00;G02B7/28;G02B7/34;G03B13/36;(IPC1-7):C03B3/00 主分类号 G02B7/38
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