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:
Mar. 19, 1985
Filed:
Jan. 07, 1982
Hitachi, Ltd., Tokyo, JP;
Abstract
A laser Raman spectrophotometry system for analyzing a sample material by measuring spectrum of Raman scattering produced by the sample under irradiation of laser light includes a laser light source for excitation of luminescence in addition to a laser light source for the excitation of the Raman scattering, and an optical system for rendering the optical path of the laser beam for luminescence excitation to substantially coincide with the optical path of the laser beam for the Raman scattering immediately before irradiation of the specimen. Luminescence spectrum brought about by the laser beam for luminescence excitation is adjusted by adjusting the laser power to simulate the luminescence spectrum concurrently produced by the laser beam for the excitation of Raman scattering, wherein both spectra of luminescence are subtractively combined together, to thereby cancel the luminescence component and allow only the spectrum of Raman-scattered light to be measured with a correspondingly enhanced accuracy.