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:
May. 20, 2025
Filed:
Feb. 16, 2021
Otsuka Pharmaceutical Co., Ltd., Tokyo, JP;
Fumio Nagai, Tokyo, JP;
OTSUKA PHARMACEUTICAL CO., LTD., Tokyo, JP;
Abstract
The present invention relates to providing a detection device that has high robustness against a temperature change and a temporal change and that is capable of detecting a substance to be detected with high accuracy. The detection device of the present invention is a detection device that detects presence or an amount of a substance to be detected using an enhanced electric field based on surface plasmon resonance, the detection device having a light projecting unit for irradiating a metal film of a detection chip held by a chip holder with excitation light via a prism. The light projecting unit includes: a light source; a diaphragm for regulating an amount of light from the light source; and a conjugate optical system that optically conjugates an opening portion of the diaphragm and a region of the metal film irradiated with the excitation light.