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. 17, 2025
Filed:
Oct. 20, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Yukihiro Inoue, Tochigi, JP;
Hiroyuki Morimoto, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a detection device which is able to accurately detect position information on an optical axis of laser light and reduce a measurement error, including a first split unit configured to split laser light output from a light source into a plurality of light beams, a detection unit configured to detect a position of each of the plurality of light beams, a light guide unit configured to guide the plurality of split light beams to the detection unit with optical path lengths different from each other, and a control unit configured to calculate an angular deviation or a positional deviation of the laser light on the basis of a difference in the position of each of the plurality of light beams detected by the detection unit, wherein the detection unit is one sensor that detects the position of each of the plurality of light beams guided by the light guide unit.