Title:
撮像レンズおよび撮像装置
Document Type and Number:
Japanese Patent JP6689725
Kind Code:
B2
Abstract:
The imaging lens consists of, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. The first lens group has a positive lens, a positive lens, and a negative lens successively in order from a position closest to the object side. The second lens group consists of one negative lens. The third lens group includes two or less lenses. During focusing, only the second lens group moves. The following conditional expression, which relates to a focal length f of the whole system in a state where the object at infinity is in focus and a focal length f2 of the second lens group, is satisfied: 0.4<|f/f2|<1.3.
Inventors:
Ryosuke Nagami
Tetsuya Ozato
Tetsuya Ozato
Application Number:
JP2016196360A
Publication Date:
April 28, 2020
Filing Date:
October 04, 2016
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B13/00
Domestic Patent References:
| JP2013218266A | ||||
| JP2013218267A | ||||
| JP2013152279A |
Foreign References:
| WO2013118470A1 | ||||
| CN104330871A |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office