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. 13, 2026
Filed:
Mar. 06, 2024
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
An optical concentration measuring apparatus () that includes: a light emitter () on a main surface () of a substrate () that emits light from a light-emitting surface; a light receiver () on the main surface of the substrate that receives light at a light-receiving surface; and a light guide () that guides light emitted by the light emitter to the light receiver. The light guide includes a first reflector () and a second reflector () that are connected to the main surface of the substrate and are opposite each other in an overhead view of the main surface of the substrate. The second reflector includes two quadric surfaces. The first reflector includes a main reflective surface () that is a quadric surface and two secondary reflective surfaces () that are quadric surfaces and are integrally formed at portions of the main reflective surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile