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:
Oct. 22, 2024
Filed:
Apr. 22, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Akira Kurozuka, Osaka, JP;
Tatsuo Itoh, Osaka, JP;
Kosuke Imawaka, Kyoto, JP;
Hiroyuki Furuya, Osaka, JP;
Abstract
An optical device includes: a light source part configured to project illumination light toward a sensing region; a photodetector configured to receive reflected light of the illumination light reflected on the sensing region; and a condenser mirror. The condenser mirror has a through hole through which the illumination light from the light source part passes and an optical axis of the light source part and an optical axis of the condenser mirror are aligned with each other. A reflection surface of the condenser mirror has a shape obtained by cutting out a columnar body extending in a projection direction of the illumination light, with a spheroid whose rotation axis is a major axis. The photodetector is disposed in a direction toward a first focal position of the condenser mirror. The sensing region is set in a direction toward a second focal position of the condenser mirror.