Abstract: An allochromatic light emitter (1) including an emitter casing (2) with a light exit port (3) and further including a fluorescent element provided in the emitter casing and a controller controlling the color of the light reproduced on a target plane. The fluorescent element is formed by an LED grid (4), with the LED grid (4) having a plurality of LEDs (5), wherein the plurality of LEDs (5) is divided into no less than two LED groups (6, 6′, 6″), with the LEDs (5) of an LED group (6) emitting light of a wave length which is different from the wave length of the emitted light of another LED group (6′, 6″). The controller includes an electronic control (7) providing different LED groups (6, 6′, 6″) independently of one another with a respectively variable operating voltage (U, U′, U″).