发明名称 Lens control apparatus
摘要 A lens control apparatus which corrects a variation in a focus position due to a zooming operation by driving a compensator lens at a standard speed according to a predetermined cam locus is arranged to determine a correction direction on the basis of an integral value of a high-frequency component and a correction speed on the basis of the ratio of the high-frequency component to a luminance difference, and to combine the correction speed based on the state of focus with the standard speed.
申请公布号 US5956528(A) 申请公布日期 1999.09.21
申请号 US19970900503 申请日期 1997.07.25
申请人 CANON KABUSHIKI KAISHA 发明人 TANAKA, TAEKO
分类号 G02B7/08;G02B7/10;G02B7/36;H04N5/225;H04N5/232;(IPC1-7):G03B13/36;G02B15/14 主分类号 G02B7/08
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