Invention Grant
- Patent Title: Zoom lens, optical apparatus, and method for manufacturing zoom lens
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Application No.: US16503615Application Date: 2019-07-04
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Publication No.: US10908388B2Publication Date: 2021-02-02
- Inventor: Takeshi Umeda
- Applicant: NIKON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIKON CORPORATION
- Current Assignee: NIKON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: SGPatents PLLC
- Priority: JP2015-017212 20150130
- Main IPC: G02B9/60
- IPC: G02B9/60 ; G02B13/02 ; G02B15/177 ; G02B15/20 ; G02B27/00 ; G02B27/64

Abstract:
A zoom lens includes, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; a fourth lens group; and a fifth lens group. When the zoom lens performs varying magnification, the distance between the first and second lens groups changes, the distance between the second and third lens groups changes, the distance between the third and fourth lens groups changes, the distance between the fourth and fifth lens groups changes, the second and fourth lens groups move along the same trajectory along the optical axis, and at least the third lens group moves along the optical axis.
Public/Granted literature
- US20190331877A1 ZOOM LENS, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING ZOOM LENS Public/Granted day:2019-10-31
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