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:
Apr. 07, 2026
Filed:
Apr. 18, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Hayato Kato, Tochigi, JP;
Kazumi Kimura, Saitama, JP;
Hiroki Yoshida, Tochigi, JP;
Toshifumi Chida, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A light scanning apparatus satisfies the following conditions: 0.60≤(dY/dθ)/(dY/dθ)≤0.98; and 0.50<Sk/ft<1.00, where, when a deflecting unit rotates at a constant angular velocity, θ represents a scanning angle between a principal ray of a light flux immediately after deflected by the deflecting unit and an optical axis of an imaging optical system, Yrepresents an on-axis image height, Yrepresents a first outermost off-axis image height on a side opposite to a light source with respect to the optical axis of the imaging optical system in a main scanning cross section, ft represents a focal distance of the imaging optical system in the main scanning cross section, and Sk represents a distance between a rear-side principal plane of the imaging optical system and a scanned surface on an optical path of a principal ray of the light flux that travels to the on-axis image height.