Spectroscopic analysis apparatus, spectral analysis method, manufacturing method of steel strip, and quality assurance method of steel strip

摘要

The light-receiving unit 3 detects a polarization separation unit 32 that separates the reflected light into S polarization and P polarization, and the S polarization separated by the polarization separation unit 32, and an electric signal indicating the intensity of the detected S polarization The S polarization detection unit 34 that outputs to the output unit 4 and the P polarization separated by the polarization separation unit 32 are detected, and an electric signal indicating the intensity of the detected P polarization is transmitted to the output unit 4. A P polarization detection unit 33 to output is provided. The output unit 4 calculates the absorbance from the intensity ratio of the S polarization and the P polarization using the electrical signals output from the S polarization detection unit 34 and the P polarization detection unit 33, and the absorbance at an arbitrary wave number. The composition and/or composition ratio of the surface of the measurement object P are calculated using the strength.