Patent ID: 7151600

Claim:
A calibration system comprising: a calibration light source which outputs emission lines having a known emission-line wavelength; a spectral luminometer which is to be calibrated, and provided with a light receiver having an array of photoelectric conversion elements for receiving lights produced by dispersing an incident light in accordance with wavelengths and outputting electrical signals corresponding to light intensities of the respective received wavelength components, and adapted to measure an emission-line output of the calibration light source; a wavelength estimator which estimates a wavelength of the emission-line output from relative outputs of the light receiver at a plurality of measurement wavelengths neighboring the emission-line wavelength when the spectral luminometer measures the emission-line output of the calibration light source; and a wavelength calibrator which calibrates the wavelength of the spectral luminometer by estimating a wavelength change amount from a difference between the estimated wavelength of the emission-line output and the known emission-line wavelength.