Optical analyzer

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United States of America Patent

PATENT NO 9797826
SERIAL NO

14922250

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Abstract

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An optical filter 4 is placed in an optical path between a light source unit 1 using a deep ultraviolet LED as a light source and a sample cell 2. The optical filter 4 is a shortpass filter that allows passage of light of a main peak located within a deep ultraviolet region while blocking light of an unwanted peak located within a visible region. The temporal change in the amount of light of the unwanted peak is considerably greater than that of the main peak. The optical filter 4 blocks the former light whose amount considerably changes with time. As a result, the influence of the noise and drift originating from the LED on the detection signal obtained in a detector 3 is dramatically reduced, so that the analytical accuracy is improved.

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Patent Owner(s)

  • SHIMADZU CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagai, Yusuke Kyoto, JP 123 865

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