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:
Aug. 16, 2016
Filed:
Sep. 10, 2012
Hiroki Yoshida, Utsunomiya, JP;
Hiroki Yoshida, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A scanning optical system manufacturing method includes receiving a scanning beam, emitted from a scanning unit including an incident optical system and a deflecting device and passed through an image-forming optical system, in an area having a width in the main scanning direction narrower than a spot diameter of the scanning beam by a light-receiving unit configured to be capable of being displaced at each image height position in the main scanning direction, calculating, based on an output of the light-receiving unit, a peak light quantity at each image height position of the scanning beam, smoothing distribution data of the peak light quantity at each of the image height position acquired by the calculating, and determining, based on the data acquired by the smoothing, either nondefective/defective states of the scanning unit and the image-forming optical system or a nondefective/defective state of only the image-forming optical system.