Invention Grant
- Patent Title: Zoom optical system, optical apparatus and imaging apparatus using the zoom optical system, and method for manufacturing the zoom optical system
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Application No.: US16345169Application Date: 2016-11-21
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Publication No.: US11269163B2Publication Date: 2022-03-08
- Inventor: Kosuke Machida
- Applicant: Nikon Corporation
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: SGPatents PLLC
- International Application: PCT/JP2016/084394 WO 20161121
- International Announcement: WO2018/092294 WO 20180524
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B27/64 ; G03B5/02 ; G03B5/04
Abstract:
A zoom optical system ZL comprises, in order from an object: a first lens group (G1) having a positive refractive power; a second lens group (G2) having a negative refractive power; a third lens group (G3) having a positive refractive power; and a subsequent lens group (GR), wherein upon zooming, distances between the lens groups change, the subsequent lens group (GR) comprises a focusing lens group that moves upon focusing, and conditional expressions 0.18
Public/Granted literature
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