Title:
光学系及び光学機器
Document Type and Number:
Japanese Patent JP7245447
Kind Code:
B2
Abstract:
To provide an optical system which offers good imaging performance, an optical device, and a method of manufacturing such optical system.SOLUTION: An optical system OL provided herein comprises a focusing group Gf configured to move while focusing and a diffractive optical element GD disposed on the object side relative to the focusing group Gf, and satisfies conditions expressed as: 0.025
Inventors:
Hiroshi Himoto
Application Number:
JP2018221269A
Publication Date:
March 24, 2023
Filing Date:
November 27, 2018
Export Citation:
Assignee:
NIKON CORPORATION
International Classes:
G02B13/02; G02B5/18
Domestic Patent References:
| JP2018165818A | ||||
| JP2015215437A | ||||
| JP2012078397A | ||||
| JP2015232674A | ||||
| JP2018173489A | ||||
| JP2018180363A |
Attorney, Agent or Firm:
Takeyo Hosaka
Kei Iwasaki
Kei Iwasaki