Patent ID: 8183790

Claim:
An LED reading light module comprising: two power supply connections ( 17 ) for connection to an external power supply unit ( 16 ), an LED ( 12 ) for giving off light with a desired light intensity, a coding component ( 14 ), comprising a coding resistor having a value that specifies the magnitude of a current for the LED module to be provided by the external power supply unit ( 16 ), and a current controller ( 18 ) providing an operating current for the operation of the LED ( 12 ), the operating current being independent of the current provided by the external power supply unit, wherein the coding component ( 14 ) causes the external power supply to provide the maximum power supply current that can be provided by the external power supply unit ( 16 ), and wherein the current controller ( 18 ) adjusts the operating current to a value at which the LED ( 12 ) gives off light with the desired light intensity.