| 摘要 |
PROBLEM TO BE SOLVED: To provide a photometric device capable of calibrating in a short time without requiring repetition of sensitivity calibration in each wavelength of each optical sensor, even when a spectral sensitivity characteristic is changed with elapse of time, and measuring highly accurately characteristics such as chromaticity, illuminance or color rendering properties of light to be tested. SOLUTION: An optical sensor means 11 including an optical filter and a light receiving element is constituted by arraying a plurality of optical sensors SE having each different spectral sensitivity characteristic whose sensitivity wavelength domain is restricted respectively. A control means 103 performs weighting by using a fixed weighting coefficient corresponding to the spectral sensitivity characteristic of each different optical sensor SE, multiplies the weighting coefficient by a prescribed correction coefficient, and changes the sensitivity characteristic of the optical sensor means 11 into a prescribed characteristic in a wavelength domain in a prescribed range. COPYRIGHT: (C)2011,JPO&INPIT |
