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, 2022
Filed:
Apr. 01, 2021
Sharp Kabushiki Kaisha, Sakai, JP;
Kazutaka Matsumoto, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A light source according to the present invention is for an exposure device of a multifunction peripheral and includes a multi-beam light source. Two laser diodes included in the multi-beam light source are individually driven by a laser driver. Reference signals Vrefand Vrefused to control the light emitting power of the laser diodes are individually generated by two reference signal generation circuits. The reference signals Vrefand Vrefare each generated by processing including digital calculation, and at least one of the reference signals Vrefand Vrefincludes a component for correcting the relative output difference of the laser diodes.