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:
Dec. 16, 2025
Filed:
Jul. 12, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An optical system includes, in order from a side of an exit pupil to a side of a display element, a polarization selective half-transmissive reflective element, a first quarter waveplate, an optical member including a half-transmissive reflective surface, a second quarter waveplate, and a polarizer, and is configured to guide light from the display element to the exit pupil. The optical system is changeable between a first state in which polarization directions of the polarization selective half-transmissive reflective element and the polarizer are orthogonal to each other, and a second state in which the polarization directions of the polarization selective half-transmissive reflective element and the polarizer coincide with each other.