发明名称 POWER ZOOMING DEVICE
摘要 A power zooming device for a camera having a zoom lens and electric drive for zooming the zoom lens. An operation switch is movable in opposite directions from a neutral position. A control switch determines a zooming operation for actuation of the electric drive, when the operation switch has been displaced, on the basis of the positions of the operation switch before and after displacement thereof.
申请公布号 US5198847(A) 申请公布日期 1993.03.30
申请号 US19910656221 申请日期 1991.02.15
申请人 ASAHI KOGAKU KOGYO KABUSHIKI KAISHA 发明人 TAKAHASHI, HIROYUKI
分类号 G02B7/08;G02B7/10;G03B5/00;H04N5/232 主分类号 G02B7/08
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