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:
Dec. 03, 2024
Filed:
Sep. 01, 2022
National University Corporation Kagawa University, Takamatsu, JP;
Ichiro Ishimaru, Takamatsu, JP;
NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, Takamatsu, JP;
Abstract
A spectrometry deviceincludes: a collimating optical systemconfigured to collimate object light from a measurement point a on a sample S; a photodetectorhaving a light-receiving face in which a plurality of pixels are arrayed in a predetermined direction; a conjugate plane imaging optical systemprovided between the sample and the collimating optical system to form a plane optically conjugate with respect to a surface of the sample; an amplitude-type diffraction gratingdisposed on the conjugate surface and having a light incident face on which the object light is incident or a light emission face from which the object light is emitted, the light incident face or the light emission face being formed by a light-shielding member made of a material having a light shielding rate higher than that of silicon in a wavelength band of the object light and provided with a plurality of openings, an optical path length differentiating optical systemconfigured to divide collimated object light into a first light beam and a second light beam to provide an optical path length difference; and an interference optical systemconfigured to cause the first light beam and the second light beam provided with the optical path length difference to interfere with each other to form an interference image on the light-receiving face along the predetermined direction.