Title:
光学装置および撮像装置
Document Type and Number:
Japanese Patent JP6482308
Kind Code:
B2
Abstract:
An optical apparatus includes a first phase plate which gives a fixed relative phase difference by π/2 between a polarization component in a slow axis direction and a polarization component in a fast axis direction, a second phase plate which gives a relative phase difference between a polarization component in a slow axis direction and a polarization component in a fast axis direction, a polarizer which extracts a polarization component to be guided to the image pickup element, and a setter which sets the relative phase difference of the second phase plate, the slow axis direction of the second phase plate is inclined with respect to each of the slow and fast axes directions of the first phase plate, and the setter sets the relative phase difference of the second phase plate depending on the polarization component of light.
Inventors:
Hiroshi Yamaguchi
Application Number:
JP2015022960A
Publication Date:
March 13, 2019
Filing Date:
February 09, 2015
Export Citation:
Assignee:
Canon Inc
International Classes:
G02F1/13; G02B5/30; G02F1/13363
Domestic Patent References:
| JP2010124011A | ||||
| JP2002303824A | ||||
| JP10108065A |
Foreign References:
| US20100157298 | ||||
| WO2012039086A1 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya