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:
Jan. 08, 2019
Filed:
Sep. 13, 2016
Takehiro Nishimori, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Tatsuya Takahashi, Tokyo, JP;
Takehiro Nishimori, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Tatsuya Takahashi, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A light source device includes a light source section that emits laser beam, a member reducing light quantity unevenness of the laser beam, a diffusion member that is provided in a traveling optical path of the laser beam between the light source section and the member reducing light quantity unevenness and diffuses the laser beam, a detection element that detects a physical characteristic of the diffusion member and outputs a state detecting signal, and an abnormal state determiner that determines an abnormal state of the diffusion member based on the state detecting signal.