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:
Mar. 05, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Takashi Ode, Tochigi, JP;
Takahiro Hatada, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having positive refractive power, a third lens unit, a fourth lens unit having positive refractive power, and a fifth lens unit having negative refractive power. During focusing from infinity to a close distance, a distance between adjacent lens units changes and the second lens unit and the fourth lens unit move toward the object side. At least one of the second lens unit and the fourth lens unit includes two or more lenses. The first lens unit includes two or more negative lenses. A predetermined inequality is satisfied.