PROBLEM TO BE SOLVED: To provide an illumination device in which fluctuation in color temperature of illumination light is suppressed, a control method of the illumination device, and an imaging system.SOLUTION: An illumination device includes a plurality of light sources for emitting lights with different wavelength regions, a light monitor part for detecting a light volume of a light emitted from each of the light sources, a drive amount calculation part for calculating drive voltage or drive current applied to each of the light sources based on the light volume detected by the light monitor part and a target light volume, and a drive amount correction part for correcting the calculated drive voltage or drive current based on the light volume of the light source whose responsiveness is lowest of the plurality of light sources.SELECTED DRAWING: Figure 1【課題】照明光の色温度の変動が抑制された照明装置、照明装置の制御方法、および撮像システムを提供する。【解決手段】異なる波長域の光を出射する複数の光源と、前記光源の各々から出射された光の光量を検出する光モニタ部と、前記光モニタ部が検出した光量と、目標光量とに基づいて、前記光源の各々に印加する駆動電圧または駆動電流を算出する駆動量算出部と、前記複数の光源のうち最も応答性が低い光源の光量に基づいて、算出された前記駆動電圧または駆動電流を補正する駆動量補正部と、を備える、照明装置。【選択図】図１
