发明名称 Lens drive controlling apparatus
摘要 A lens drive controlling apparatus includes a zooming lens, a focusing lens driven in follow-up relation to a movement of the zooming lens on the basis of a predetermined characteristic, a speed sensor for detecting a driving speed of the zooming lens, and a control circuit for determining a driving speed of the focusing lens on the basis of a detection result provided by the speed sensor.
申请公布号 US5287223(A) 申请公布日期 1994.02.15
申请号 US19910694883 申请日期 1991.05.02
申请人 CANON KABUSHIKI KAISHA 发明人 HIRASAWA, MASAHIDE
分类号 G02B7/10;(IPC1-7):G02B15/14 主分类号 G02B7/10
代理机构 代理人
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