Invention Grant
- Patent Title: Zoom lens, optical apparatus and manufacturing method
- Patent Title (中): 变焦镜头，光学仪器及制造方法
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Application No.: US12572302Application Date: 2009-10-02
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Publication No.: US07830616B2Publication Date: 2010-11-09
- Inventor: Saburo Masugi
- Applicant: Saburo Masugi
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Miles & Stockbridge P.C.
- Priority: JP2008-256939 20081002
- Main IPC: G02B15/14
- IPC: G02B15/14
Abstract:
A zoom lens comprises, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group G3 having positive refractive power. The first lens group G1 consists of one spherical negative lens and one spherical positive lens with an air space therebetween, and the conditional expression 0.50
Public/Granted literature
- US20100085648A1 ZOOM LENS, OPTICAL APPARATUS AND MANUFACTURING METHOD Public/Granted day:2010-04-08
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