The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2019
Filed:
Feb. 02, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Yutaka Yamaguchi, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
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.