| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an absorbance measuring instrument, capable of enhancing detection sensitivity and an S/N ratio in the measurement of the absorbance of a laser beam for the purpose of the measurement of gas concentration, and an absorbance measuring method. <P>SOLUTION: The diffused laser beam P is emitted to a measuring target from laser beam sources 11 and 13a, a light detection element array DA comprising a plurality of light detection elements is arranged in the irradiation surface of the laser beam P and the absorbance of the laser beam P in the measuring target is measured, on the basis of the intensity signals outputted from the respective light detection elements. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
