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:
Oct. 31, 2023
Filed:
Jun. 17, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Maki Yokoya, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A lens apparatus includes two optical systems each of which includes, in order from an object side to an image side, a negative first lens unit, a first reflective member, an aperture diaphragm, a second reflective member, and a positive second lens unit. Each optical system satisfies following inequalities:5.9<<13.60.7<2/2<5.210.4<<19.8DR represents a distance on an optical axis from a reflective surface of the first reflective member to a reflective surface of the second reflective member. f represents a focal length of the optical system. f2 represents a focal length of the second lens unit. D2 represents a distance on the optical axis from the reflective surface of the second reflective member to an image plane. DP represents a distance on the optical axis from the aperture diaphragm to the image plane.