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. 16, 2026
Filed:
Nov. 17, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Toyokatsu Fujisaki, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A system consists of a front lens unit and a negative lens on an image side of the front lens unit. A focal length of the system, a focal length of the negative lens, an effective diameter of a lens surface on an object side of the negative lens, a diameter of an aperture stop that determines an on-axis ray, and an on-axis distance from an endmost point in a light effective area of the lens surface on the object side of the negative lens to an on-axis point of the negative lens satisfy predetermined inequalities.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile