Lighting device with a LED-module

The invention relates to a lighting arrangement with an LED module (1) and a power supply (2) for the electrical supply of the LED module, wherein a dependent of an optical output of the LED module measuring signal (6) is generated, the measuring signal (6). in the power supply (2) is fed, and the power supply (2) the electrical supply of the LED module (1) so on the basis of the measuring signal (6) controls that in operation, the LED module (1) has a predetermined optical target output complies, or the power supply (2) interrupts the electrical supply of the LED module in response to the measuring signal (6).