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:
Apr. 08, 2025
Filed:
Feb. 14, 2023
Kabushiki Kaisha Toshiba, Tokyo, JP;
Masatoshi Hirono, Yokohama Kanagawa, JP;
Shinji Saito, Yokohama Kanagawa, JP;
Tsutomu Kakuno, Fujisawa Kanagawa, JP;
Rei Hashimoto, Tokyo, JP;
Kei Kaneko, Yokohama Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A gas detection device according to an embodiment includes a first light source irradiating infrared, a second light source irradiating visible light, a low-pass filter that transmits the infrared irradiated from the first light source, reflects the visible light irradiated from the second light source, and aligns an optical axis of the visible light with an optical axis of the infrared, a first retroreflector on which the infrared and the visible light having the aligned optical axes are incident, a first detecting part detecting the infrared reflected by the first retroreflector, and a scattering body located at a center of the first retroreflector.