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:
Jun. 30, 2026
Filed:
Dec. 19, 2023
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Kazuto Ishida, Tochigi, JP;
Yu Miyajima, Tochigi, JP;
Keigo Yarita, Tokyo, JP;
Yuma Kobayashi, Tochigi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/00 (2006.01); G02B 13/18 (2006.01); G02B 17/08 (2006.01); G02B 25/00 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 13/002 (2013.01); G02B 13/18 (2013.01); G02B 17/0856 (2013.01); G02B 27/0172 (2013.01); G02B 25/001 (2013.01); G02B 27/0025 (2013.01);
Abstract
An optical system includes, in order from a pupil surface to a display surface, a front group having a first lens with positive refractive power, and a rear group having multiple lenses. The rear group includes a first transmissive reflective surface nearest the pupil surface and a second transmissive reflective surface nearest the display surface. The optical system satisfies a predetermined inequality to improve optical performance.