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. 10, 2025
Filed:
Mar. 13, 2023
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Naoto Doujou, Tochigi, JP;
Kazuhiko Kajiyama, Tochigi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/64 (2006.01); B60Q 9/00 (2006.01); B60T 7/22 (2006.01); B60T 8/171 (2006.01); B60T 8/172 (2006.01); G08G 1/16 (2006.01);
U.S. Cl.
CPC ...
G02B 9/64 (2013.01); B60Q 9/008 (2013.01); B60T 7/22 (2013.01); B60T 8/171 (2013.01); B60T 8/172 (2013.01); G08G 1/16 (2013.01); B60T 2201/022 (2013.01);
Abstract
An optical system includes a negative lens and a positive lens adjacent to each other, wherein the following inequalities are satisfied: 0.00≤DAB≤1.00, and 0.80≤RA/RB≤1.20, where DAB[mm] denotes a distance on an optical axis between the negative lens and the positive lens, and RA and RB denote curvature radii of facing lens surfaces of the negative lens and the positive lens, respectively, and wherein specific inequalities are satisfied.