Title:
変倍光学系および撮像装置
Document Type and Number:
Japanese Patent JP7314200
Kind Code:
B2
Abstract:
To provide a variable magnification optical system which is miniaturized and an imaging apparatus which includes the variable magnification optical system.SOLUTION: A variable magnification optical system consists of a positive first lens group, an intermediate group, and a subsequent group in order from an object side to an image side, and does not form an intermediate real image in the entire zooming range. During zooming in a first zooming mode, a distance between the first lens group and the intermediate group changes, all distances between adjacent lens groups in the intermediate group change, a distance between the intermediate group and the subsequent group changes, and all distances between adjacent lens groups in the subsequent group are stationary. During zooming in the second zooming mode, all lens groups in the first lens group and the intermediate group are stationary, and all the distances of the adjacent lens groups in the subsequent group change. The zooming in the first zooming mode and the zooming in the second zooming mode can be independent.SELECTED DRAWING: Figure 1
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Inventors:
Takuya Tanaka
Shinkichi Ikeda
Shinkichi Ikeda
Application Number:
JP2021091561A
Publication Date:
July 25, 2023
Filing Date:
May 31, 2021
Export Citation:
Assignee:
Fujifilm Corporation
International Classes:
G02B15/20; G02B15/14; G02B15/167
Domestic Patent References:
| JP49122350A | ||||
| JP49066354A | ||||
| JP60222814A |
Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office