ILLUMINATING APPARATUS

PURPOSE: A lighting device is provided to implement high efficiency and reduce power consumption using a semiconductor light emitting device. CONSTITUTION: A light source unit(10) includes a first light emitting module and a second light emitting module. The first light emitting module emits a first monochromatic light to a preset point. The second light emitting module emits a second monochromatic light to the preset point. A light combination unit(50) is arranged on the preset position and emits the combined light of the first and second monochromatic light. A light output unit(60) emits the light by controlling the radiation angle of the mixed light. A controller(100) controls the color of the combined color by controlling the on/off state of the first and second light emitting modules.