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. 10, 2023
Filed:
Sep. 22, 2021
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Takaaki Furuya, Tokyo, JP;
Toshiro Sakamoto, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
An optical chemical analysis apparatus () includes an optical waveguide () and a light source (). The optical waveguide () has a core layer () that includes a light propagator (), through which light can propagate in an extension direction, and a diffraction grating (first diffraction grating ()) that connects optically to the light propagator (). The light source () is configured to inject the light into the diffraction grating by emitting incoherent light. The diffraction grating further includes a light intake region for introduction of light from the light source, and the light source includes at least one light emitting point at a position such that the difference between the shortest optical distance Lab to the light intake region and the longest optical distance Lac to the light intake region is less than half of the wavelength, in a vacuum, of the light.