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:
May. 30, 2023
Filed:
Mar. 29, 2021
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Yuichi Gyoda, Tochigi, JP;
Hiroki Ebe, Tochigi, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 13/02 (2006.01);
U.S. Cl.
CPC ...
G02B 15/144511 (2019.08); G02B 13/02 (2013.01);
Abstract
A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a rear unit including one or more lens units. Distances between adjacent lens units change during zooming. The first lens unit includes a negative lens made of resin. The rear unit includes a positive lens made of resin. A predetermined condition is satisfied.