发明名称 Automatic focusing system
摘要 A lens apparatus is disclosed, in which an in-focus state obtained by a manual focus can be adjusted by the assistance of an automatic focus with good response. The lens apparatus comprises a lens system which includes, in order from an object side, a first focusing lens (1) for manual focus, a magnification-varying lens (3), and a second focusing lens for automatic focus (7); a first operating member (14) for the automatic focus; an actuator (8) which drives the second focusing lens; and a controller (15). The controller performs the automatic focus control in accordance with an operation of the first operating member, in a state in which the position of the first focusing lens at the time of the operation of the first operating member is maintained. <IMAGE>
申请公布号 EP1553434(A1) 申请公布日期 2005.07.13
申请号 EP20050250023 申请日期 2005.01.06
申请人 CANON KABUSHIKI KAISHA 发明人 IDEMURA, TAKESHI
分类号 G02B7/10;(IPC1-7):G02B7/10 主分类号 G02B7/10
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