Invention Grant
US08405915B2 Zooming optical system, optical apparatus and zooming optical system manufacturing method
有权
变焦光学系统，光学仪器和变焦光学系统的制造方法
- Patent Title: Zooming optical system, optical apparatus and zooming optical system manufacturing method
- Patent Title (中): 变焦光学系统，光学仪器和变焦光学系统的制造方法
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Application No.: US12710745Application Date: 2010-02-23
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Publication No.: US08405915B2Publication Date: 2013-03-26
- Inventor: Satoshi Hayakawa
- Applicant: Satoshi Hayakawa
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Miles and Stockbridge P.C.
- Priority: JP2009-043347 20090226; JP2009-043348 20090226; JP2009-043349 20090226; JP2009-043350 20090226; JP2009-268887 20091126
- Main IPC: G02B15/14
- IPC: G02B15/14
Abstract:
The present invention has at least a first lens group G1 to a fifth lens group G5 which are disposed in order from an object. The first lens group G1 has positive refractive power, and is divided into at least two subgroups (front group G1F and rear group G1R in FIG. 1). One of the subgroups is a focusing lens group (rear group G1R in FIG. 1). The subgroup other than the focusing lens group (front group G1F in FIG. 1), out of the subgroups, is fixed, upon focusing from an infinite object point to a close object point.
Public/Granted literature
- US20100214667A1 ZOOMING OPTICAL SYSTEM, OPTICAL APPARATUS AND ZOOMING OPTICAL SYSTEM MANUFACTURING METHOD Public/Granted day:2010-08-26
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