COLOR RENDERING PROPERTY EVALUATION METHOD, ITS APPARATUS, AND LIGHT EMISSION APPARATUS MANUFACTURED THROUGH EVALUATION BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To facilitate the manufacture of a light emission apparatus excellent in color rendering properties.;SOLUTION: A light emission waveform of an object to be evaluated, a medium absorption waveform, and a reference white chromaticity are measured by measuring means 11-13. The area on a u'v' chromaticity diagram is determined by a computation means 15 on the basis of measured data of the light emission waveform and measured data of the medium absorption waveform. A maximum luminance is determined by a computation means 16 on the basis of the measured data of the light emission waveform, the measured data of the medium absorption waveform, and the measured data of the reference white chromaticity. The product of the area and the maximum luminance is determined as a color rendering property index ϕ₁ by a computing means 17 to evaluate color rendering properties of the object to be evaluated on the basis of the color rendering property index ϕ₁, or a value acquired by dividing the color rendering property index ϕ₁ by a waveform integrated value of the measured data of the light emission waveform is determined as a color rendering property index ϕ₂ by a computing means 18 to evaluate color rendering properties of the object to be evaluated on the basis of the color rendering property index ϕ₂.;COPYRIGHT: (C)2006,JPO&NCIPI