Patent ID: 6690465
Filing Date: 2004-02-10
Classification: G01J

Abstract:
A method of measuring a spectral irradiance distribution of light, comprising the steps of:(a) receiving the light on each of a natural number s of optical sensors, each of which has a different given spectral sensitivity, via a natural number n of light-transit sections, each of which has a different given optical characteristic coefficient; (b) detecting individual responses for the light, which is received via said n light-transit sections, by each and every one of said s optical sensors, and obtaining a natural number nÃ—s of total responses for the received light; and (c) calculating a natural number m of spectral irradiances for m kinds of wavelengths as a spectral irradiance distribution of the light, based on one or more linear formulae established between said optical characteristic coefficients, said spectral sensitivities, said nÃ—s responses for the light, and said spectral irradiance distribution of the light.