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Title:
SPECTROPHOTOMETER
Document Type and Number:
WIPO Patent Application WO/2012/067068
Kind Code:
A1
Abstract:
The present invention is capable of obtaining highly stabilized transmission and absorption spectra with high S/N and drift suppressed over a long time even when the amount of light of a light source temporally changes in a single-beam spectrophotometer. A spectrophotometer comprises: a light source; a sample cell; a polychromator which generates the transmission spectrum of a sample in the sample cell by dispersing light transmitted through the sample out of light from the light source into a plurality of wavelength components; an image sensor which detects the transmission spectrum of the sample; a light source monitor light detector which detects light not transmitted through the sample out of the light from the light source; and a calculation unit which corrects the transmission spectrum of the sample using an output signal of the light source monitor light detector.

Inventors:
MATSUI SHIGERU (JP)
YAMAMURA SHUHEI (JP)
AKIYAMA HIDEYUKI (JP)
EBATA YOSHISADA (JP)
Application Number:
PCT/JP2011/076180
Publication Date:
May 24, 2012
Filing Date:
November 14, 2011
Export Citation:
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Assignee:
HITACHI HIGH TECH CORP (JP)
MATSUI SHIGERU (JP)
YAMAMURA SHUHEI (JP)
AKIYAMA HIDEYUKI (JP)
EBATA YOSHISADA (JP)
International Classes:
G01N21/27; G01J3/02; G01J3/36
Foreign References:
JPS63198867A1988-08-17
JPH09145478A1997-06-06
JPH08233659A1996-09-13
JP2009008554A2009-01-15
JPH05113369A1993-05-07
JPH10185686A1998-07-14
JPH11108830A1999-04-23
Attorney, Agent or Firm:
HIRAKI Yusuke et al. (JP)
Yusuke Hiraki (JP)
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