Patent ID: 9170194
Filing Date: 2015-10-27
Classification: G01N

Abstract:
1. A material property measuring apparatus comprising: a radiation source irradiator configured to irradiate a measurement target material with radiation beams having n different wavelengths; a detector configured to detect intensities of radiation beams having the respective wavelengths after the irradiation of the measurement target material; and a processing unit configured to correct the detected intensity of the radiation beam having at least a part of the respective wavelengths using a correction coefficient in which rows and columns are respectively represented by a matrix of an order of n or less, and to calculate an index value indicating a property of the measurement target material on the basis of relative intensities of the radiation beams having the respective wavelengths after the correction, wherein the processing unit converts the calculated index value into a property value by referring to a calibration curve which correlates the index value with the property value, after the calculation of the index value, the correction coefficient is determined so that the degree of coincidence between calibration curves for a plurality of kinds of the measurement target material satisfies a certain criterion, and the calibration curve to be used for actual measurement is one calibration curve which is common to the plurality of kinds of the measurement target material.