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:
Feb. 03, 1998
Filed:
Mar. 18, 1996
Applicant:
Inventors:
Assignee:
Yokogawa Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356346 ; 356345 ;
Abstract
A spectroscope comprising an optical fiber placed in a light path to a sample chamber, wherein a light beam outputted from the optical fiber is divided into two using an optical coupler, and wherein the two divided light beams are made incident on a measurement optical fiber and a reference optical fiber, respectively, whereby accuracy of measurement of the spectral characteristics of samples is enhanced because the outgoing light is made incident on the measurement and reference optical fibers concurrently when the light to the sample chamber becomes non-uniform due to environmental changes.