Patent ID: 9423339
Filing Date: 2016-08-23
CPC Classification: G01J,G01N

Claim Text:
1. A spectral measurement apparatus for irradiating a sample as a measurement object with excitation light and detecting light to be measured, comprising: a light source configured to generate the excitation light; an integrator having an input opening portion for inputting the excitation light, and an output opening portion for outputting the light to be measured; a sample container including a housing portion for housing the sample and arranged in the integrator; an incidence optical system configure to irradiate the sample with the excitation light so that an irradiation area with the excitation light at a position of incidence to the sample is set larger than an irradiated area of the sample; a photodetector configured to detect the light to be measured output from the output opening portion and output a detection signal; and an analyzer configured to calculate a light absorptance of the sample, based on the detection signal, wherein the analyzer performs an area ratio correction regarding the irradiation area with the excitation light and the irradiated area of the sample, with respect to the light absorptance calculated.