Illumination device comprising - a first group of illuminants for emission of light of a first color, wherein the first group comprises at least one illuminant, - at least one second group of illuminants for emission of light of a second color differing from the first color, wherein the second group comprises at least one illuminant, - a first driver unit for driving the first group of illuminants, - a second driver unit for driving the second group of illuminants, - a control unit for common or mutually independent control of the first and the second driver unit by means of control signals, - wherein each control signal of the control unit is a control signal, representing n bits, of a multi-bit code, with n > 1, - wherein the multi-bit code comprises a plurality of binary code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) subdivided into at least two code classes (1, 2, 3, 4) of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) having different numbers of one-bits, - wherein the code classes (1, 2, 3, 4) are assigned to different intensities of the emission of light by the illuminants, - wherein, for controlling the intensity of the emission of light by the at least one first illuminant or the at least one second illuminant, the control unit is operative to transmit, to the drive unit and respectively drive units, control signals including a code word (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) from that code class (1, 2, 3, 4) which is assigned to the desired intensity of the emission of light by the respective illuminant, and - wherein, if the intensity of the emission of light by the respective illuminant is desired to remain unchanged or the intensity has assigned to it a code class (1, 2, 3, 4) comprising a plurality of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1), the control unit is operative to sequentially transmit control signals including different code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) from the group of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) of the code class (1, 2, 3, 4) assigned to the intensity, characterized in - that at least one code class (1, 2, 3, 4) comprises a plurality of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) having the same number of one-bits, - that the number of one-bits of the code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) of the classes is different from code class (1, 2, 3, 4) to code class (1, 2, 3, 4), - that the at least two control signals do not correlate with each other and/or correlate with each other only after a predefinable number of cycles, e.g. only after 256, 512, 1024, 2048 or 4096 cycles for one or a few cycles, wherein a correlation is to be understood in the sense that the auto or cross correlation function for predefinable intervals assumes a value above a predefinable threshold. - a first group of illuminants for emission of light of a first color, wherein the first group comprises at least one illuminant, - at least one second group of illuminants for emission of light of a second color differing from the first color, wherein the second group comprises at least one illuminant, - a first driver unit for driving the first group of illuminants, - a second driver unit for driving the second group of illuminants, - a control unit for common or mutually independent control of the first and the second driver unit by means of control signals, - wherein each control signal of the control unit is a control signal, representing n bits, of a multi-bit code, with n > 1, - wherein the multi-bit code comprises a plurality of binary code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) subdivided into at least two code classes (1, 2, 3, 4) of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) having different numbers of one-bits, - wherein the code classes (1, 2, 3, 4) are assigned to different intensities of the emission of light by the illuminants, - wherein, for controlling the intensity of the emission of light by the at least one first illuminant or the at least one second illuminant, the control unit is operative to transmit, to the drive unit and respectively drive units, control signals including a code word (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) from that code class (1, 2, 3, 4) which is assigned to the desired intensity of the emission of light by the respective illuminant, and - wherein, if the intensity of the emission of light by the respective illuminant is desired to remain unchanged or the intensity has assigned to it a code class (1, 2, 3, 4) comprising a plurality of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1), the control unit is operative to sequentially transmit control signals including different code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) from the group of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) of the code class (1, 2, 3, 4) assigned to the intensity, - that at least one code class (1, 2, 3, 4) comprises a plurality of code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) having the same number of one-bits, - that the number of one-bits of the code words (0-1, 1-1 to 1-4, 2-1 to 2-6, 3-1 to 3-4, 4-1) of the classes is different from code class (1, 2, 3, 4) to code class (1, 2, 3, 4), - that the at least two control signals do not correlate with each other and/or correlate with each other only after a predefinable number of cycles, e.g. only after 256, 512, 1024, 2048 or 4096 cycles for one or a few cycles, wherein a correlation is to be understood in the sense that the auto or cross correlation function for predefinable intervals assumes a value above a predefinable threshold.