Light emission arrangement and method for operating a light emission arrangement

A method for operating a light emission arrangement,

• wherein the light emission arrangement comprises a number N of assemblies each comprising a first, a second, and a third semiconductor light-emitting body,
• wherein the method comprises
• operating a first series connection comprising the first light-emitting semiconductor bodies of the number N of assemblies with a first driver signal by a first driver of a driver arrangement,
• operating a second series connection comprising the second light-emitting semiconductor bodies of the number N of assemblies with a second driver signal by a second driver of the driver arrangement, and
• operating a third series connection comprising the third light-emitting semiconductor bodies of the number N of assemblies with a third driver signal by a third driver of the driver arrangement,
• wherein the number N is greater than 1,
• wherein the first, the second, and the third driver signals depend on photometric quantities of the first, the second, and the third light-emitting semiconductor bodies of the number N of assemblies,
• wherein the first, the second, and the third drivers each output a pulse width modulated driver signal with a first, a second, and a third duty cycle and adjust the first, the second, and the third duty cycle corresponding to an information stored in a memory of the driver arrangement, and
• wherein the method further comprises:
• identifying a first average value of at least one photometric quantity of the first semiconductor light-emitting bodies of the number N of assemblies,
• identifying a second average value of at least one photometric quantity of the second light emitting semiconductor bodies of the number N of assemblies,
• identifying a third average value of at least one photometric quantity of the third light-emitting semiconductor bodies of the number N of assemblies, and
• determining the first duty cycle of the first driver, the second duty cycle of the second driver, and the third duty cycle of the third driver corresponding to at least one of a target chromaticity coordinate or a target luminous intensity and corresponding to the first, second, and third average value of the at least one photometric quantity.

A light emission arrangement comprising

• a driver arrangement comprising a first, a second, and a third driver, and
• a number N of assemblies, each comprising a first, a second, and a third light-emitting semiconductor body,
• wherein the number N is greater than 1,
• wherein the first driver is coupled to a first series connection comprising the first light-emitting semiconductor bodies of the number N of assemblies,
• wherein the second driver is coupled to a second series connection comprising the second light-emitting semiconductor bodies of the number N of assemblies,
• wherein the third driver is coupled to a third series connection comprising the third light-emitting semiconductor bodies of the number N of assemblies,
• wherein the first, the second, and the third driver are each configured to output a driver signal, which depends on photometric quantities of the first, the second, and the third light-emitting semiconductor bodies of the number N of assemblies,
• wherein the driver arrangement comprises a memory,
• wherein the first, the second, and the third driver are each configured to output a pulse width modulated driver signal with a first, a second, and a third duty cycle and to adjust the first, the second, and the third duty cycle corresponding to an information stored in the memory,
• wherein the first duty cycle of the first driver is an average value of a number N of target duty cycles of the first light-emitting semiconductor bodies of the number N of assemblies,
• wherein the second duty cycle of the second driver is an average value of a number N of target duty cycles of the second light-emitting semiconductor bodies of the number N of assemblies, and wherein the third duty cycle of the third driver is an average value of a number N of target duty cycles of the third light-emitting semiconductor bodies of the number N of assemblies.