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:
Mar. 29, 2022
Filed:
Apr. 21, 2017
Sharp Kabushiki Kaisha, Sakai, JP;
Yoshiki Ikuta, Sakai, JP;
Hideki Sato, Sakai, JP;
Takuma Hiramatsu, Sakai, JP;
Takayuki Shimizu, Sakai, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
An optical sensor of the present invention changes a light-emitting period of a light-emitting element and a period of a reference clock that is used by a time difference extracting circuit, depending on whether or not a digital value that is output from a first digital calculating portion exceeds a reference value in a determination period. With this, there is achieved an optical sensor capable of maintaining both of measurement accuracy at short distance and measurement accuracy at long distance when a housing panel is present between the optical sensor and a detection target.