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:
Jul. 07, 2026
Filed:
Dec. 07, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Yuma Kobayashi, Tochigi, JP;
Yu Miyajima, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An optical system through which a light beam from an image display element is guided to an exit pupil includes first and second transmissive reflective surfaces, and first and second optical elements. The first optical element includes a first optical part made of a first optical material, and a second optical part made of a second optical material different from the first optical material that are disposed in order from the exit pupil side to the image display element side. The first optical part and the second optical part are cemented to each other and a diffraction grating is formed on a cemented surface of the first and second optical parts. Predetermined inequalities are satisfied.