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. 20, 2021
Filed:
Apr. 25, 2019
Nikon Corporation, Tokyo, JP;
Fumihiro Dake, Kawasaki, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A fluorescence observation device includes: a first intensity-modulating unit that intensity-modulates, at a frequency f1, pump light that excites fluorescence of an observed subject; a second intensity-modulating unit that intensity-modulates, at a frequency f2 different from the frequency f1, probe light that induces stimulated emission of the observed subject; a light-receiving unit that receives the fluorescence from the observed subject irradiated with the intensity-modulated pump light and probe light; and a sensing unit that senses a component with a frequency of i×f1±j×f2 (i and j are positive integers, at least one of which is equal to or larger than two) in a reception-light signal sensed at the light-receiving unit.