Importance

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Abstract

The light source device is provided with a plurality of light emitting elements including light emitting elements whose emission wavelength belongs to a plurality of types of different wavelength bands, band light characteristics acquisition means generating band light characteristics acquisition data for each wavelength band, and an integrating control circuit generating a color phase instruction value and performing feedback control of a drive circuit of the light emitting element such that a difference between the color phase instruction value and the target value thereof is reduced. The integrating control circuit obtains, through an interface section, color phase correlation data correlated with a color phase instruction value with respect to the result of applying the output luminous flux to an external apparatus using the light source device and updates a target value of the color phase instruction value with the use of the color phase correlation data.

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First Claim