WHITE LIGHT SOURCE SYSTEM

摘要

Provided is a white light source system that reproduces the light-emission properties of sunlight having temperature colors and light-emission spectrum shapes that change over time, said white light source system being used for office and domestic illumination. As a result of the present invention, a white light source system is provided that includes a plurality of white light sources. A relationship formula is fulfilled whereby the absolute value is no more than 0.15 for the difference between P (λ) × V (λ) / P (λmax1) × V (λmax1) and (B (λ) × V (λ)) / B (λmax2) ×V (λmax2), when the light-emission spectrum for each white light source is P (λ), the light-emission spectrum for black body radiation indicating the same color temperature as each white light source is B (λ), the spectrum for spectral luminous efficiency is V (λ), the maximum wavelength for P (λ) × V (λ) is λmax1, and the maximum wavelength for B (λ) × V (λ) is λmax2. The white light source system is characterized by the light-emission properties of the white light emitted from the system continuously changing over time, as a result of changing the mixing ratio for light from a plurality of white light sources.