Title:
光学系、それを備える撮像装置及び撮像システム
Document Type and Number:
Japanese Patent JP7395318
Kind Code:
B2
Abstract:
To provide an optical system capable of reducing an effect by unnecessary diffraction light even with a simple configuration and also to provide an imaging apparatus and an imaging system equipped with the same.SOLUTION: An optical system 10 includes a front group 11, a shading member 4 and a rear group 12 sequentially arranged from an object side to an image side. The rear group 12 includes: a diffraction surface 5 configured to disperse a light flux having passed through an opening of the shading member 4 on a first cross section, to a plurality of light fluxes having different wavelengths; and a first optical element 9 arranged closer to the image side than the diffraction surface 5. The first optical element 9 includes first and second areas 91, 92 arranged in the first cross section and each having a spectral transmission factor different from each other.SELECTED DRAWING: Figure 1
Inventors:
Kazumi Kimura
Hiroki Yoshida
Genichiro Kudo
Hiroki Yoshida
Genichiro Kudo
Application Number:
JP2019199109A
Publication Date:
December 11, 2023
Filing Date:
October 31, 2019
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B17/00; G01J3/18; G01J3/36; G02B5/18
Domestic Patent References:
| JP6594576B1 | ||||
| JP58105024A | ||||
| JP57108766A | ||||
| JP2005156343A |
Foreign References:
| CN101432605A |
Attorney, Agent or Firm:
Takuma Abe
Sougo Kuroiwa
Sougo Kuroiwa