Method for operating a light-emitting diode arrangement, and circuit arrangement

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.