发明授权
- 专利标题： Zoom lens with inner or rear focusing system
- 专利标题（中）： 变焦镜头，内置或后置对焦系统
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申请号： US203639申请日： 1988-06-03
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公开(公告)号： US4963006A公开(公告)日： 1990-10-16
- 发明人: Kiyotaka Inadome
- 申请人： Kiyotaka Inadome
- 申请人地址： JPX Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-312978 19861226; JPX62-138998 19870604
- 主分类号： G02B7/10
- IPC分类号： G02B7/10
摘要：
A zoom lens includes a plurality of lens units movable along the optic axis, and a mechanism for prescribing the movements of the plurality of lens units along the optic axis and making the focal length of the zoom lens adjustable within a desired range. At least one of the plurality of lens units is moved along the optic axis to form the image of an obect lying at any distance from the zoom lens on a predetermined surface. The mechanism has a member formed with at least one slot which prescribes the movement of the at least one lens unit along the optic axis. The at least one lens unit is moved in accordance with the at least one slot both when it is moved along the optic axis to change the focal length of the zoom lens and when it is moved along the optic axis to form the image of the object on the predetermined surface.
公开/授权文献
- US6118102A Immersion heating element sandwiched between two substrates 公开/授权日：2000-09-12
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