Title:
ZOOM LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/194037
Kind Code:
A1
Abstract:
The present invention provides a lightweight zoom lens capable of high magnification and excellent optical performance and an imaging device equipped with the zoom lens. The zoom lens includes, in order from an object, a first positive lens group G1 remaining fixed during magnification, a second negative lens group G2 moving during magnification, a third positive lens group G3 moving during magnification, and a fourth positive lens group G4 remaining fixed during magnification. The first lens group G1 includes a negative 1a lens L1a, a negative 1b lens L1b, and a negative 1c lens L1c consecutively in order from the object. The zoom lens satisfies a prescribed conditional expression.
Inventors:
OTA MOTOARI (JP)
Application Number:
PCT/JP2018/015763
Publication Date:
October 25, 2018
Filing Date:
April 16, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B15/167
Foreign References:
| JP2014232313A | 2014-12-11 | |||
| JPH0659191A | 1994-03-04 | |||
| US20120019930A1 | 2012-01-26 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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