Title:
ZOOM LENS AND MANUFACTURING METHOD OF OPTICAL DEVICE AND ZOOM LENS
Document Type and Number:
WIPO Patent Application WO/2017/099243
Kind Code:
A1
Abstract:
Provided is a zoom lens having, arranged sequentially from an object side along the optical axis, 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, a fourth lens group (G4) having a negative refractive power, and a fifth lens group (G5) having a positive refractive power, wherein at a time of a power variation from a wide-angle end state to a telephoto end state, the distances between respective neighboring lens groups change and the following conditional expression is satisfied: 2.90 <| MV 5/MV 2 |< 11.50, in which MV 5 represents a moving amount of the fifth lens group at a time of a power variation from the wide-angle end state to the telephoto end state with an image plane as a reference, and MV 2 represents a moving amount of the second lens group at a time of a power variation from the wide-angle end state to the telephoto end state with the image plane as a reference.
Inventors:
MASUGI SABURO (JP)
Application Number:
PCT/JP2016/086814
Publication Date:
June 15, 2017
Filing Date:
December 09, 2016
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B15/20; G02B13/18
Foreign References:
| JP2013117667A | 2013-06-13 | |||
| JP2013088737A | 2013-05-13 |
Attorney, Agent or Firm:
OHNISHI, Shogo et al. (JP)
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