Patent ID: 8476833

Claim:
A method for operating a light-emitting diode arrangement comprising at least one light-emitting diode, wherein a controller is configured to transmit a current intensity value for a respective light-emitting diode to a driver and the latter is configured to feed the light-emitting diode with current in a time sequence of current pulses in a manner dependent on the current intensity value sent, wherein the time sequence of current pulses contains a check pulse, and wherein the light that is emitted by the light-emitting diode on account of the check pulse is measured by a measuring device with at least one photosensitive element, wherein the measuring device feeds measurement values to the controller, which stipulates the current intensity value in a manner dependent on at least one measurement value, wherein only measurement values that represent the light of check pulses are used for the stipulation of current intensity values, and wherein at least one of the temperature of the respective light-emitting diode and the voltage dropped across said respective light-emitting diode and the temperature of the driver is measured, wherein the driver defines a main factor on the basis of at least one of the measured temperature and voltage, the current intensity value being multiplied by said main factor, wherein the current intensities of all the current pulses in the time sequence apart from the check pulse are defined on the basis of the product thus obtained, and wherein the current intensity of the check pulse is defined directly on the basis of at least one of the current intensity value or on the basis of a further factor that is defined on the basis of the measured temperature and voltage and is different from the main factor.