| 摘要 |
PROBLEM TO BE SOLVED: To allow for setting and maintenance of a target hue by feedback control, by measuring the hue of output light flux quantitatively.SOLUTION: Light-emitting elements include those having an emission wavelengths belonging to a plurality of types of different wavelength band, and has band light characteristics acquisition means for acquiring an emission intensity indication value correlated with the light intensity for each wavelength band. An integrated control circuit generates a hue indication value correlated with the light color, and performs feedback control of a drive circuit so as to reduce the difference between the hue indication value and its target value. The integrated control circuit acquires the hue correlation data correlated with the hue indication value, for the results obtained by applying the output light flux to an external device using the light source device, via an interface, and updates the target value of hue indication value by using the hue correlation data. |
