Abstract: A dimmable LED light unit, in particular for a passenger transportation vehicle, such as an aircraft, a road vehicle, a ship or a rail car, is disclosed that comprises a power input adapted to receive electrical power from a power source, at least one LED, and an LED drive and control module coupled between the power input and the at least one LED, wherein the LED drive and control module is adapted to receive an LED control signal indicative of a desired light intensity of the dimmable LED light unit.

Abstract: A dimmable LED light unit, in particular for a passenger transportation vehicle, such as an aircraft, a road vehicle, a ship or a rail car, is disclosed that comprises a power input adapted to receive electrical power from a power source, at least one LED, and an LED drive and control module coupled between the power input and the at least one LED, wherein the LED drive and control module is adapted to receive an LED control signal indicative of a desired light intensity of the dimmable LED light unit.

Abstract: A colored light for the passengers of a passenger transportation means, in particular for the cabin of an aircraft, comprises a plurality of illuminating means, each emitting electromagnetic waves in a narrow-band wavelength range, wherein the wavelength ranges preferably do not overlap each other. Further, the colored light is provided with a drive unit for driving the illuminating means such that a soothing or stimulating effect on the passengers can be achieved via the color sensation of the human eye and the thus triggered (bio-) chemical processes in the body.

Abstract: The device (10) for controlling a lamp including LEDs emitting light in at least two different colors comprises at least two current sources (14,16,18) of which each is assigned to a group of LEDs (20,24,26) emitting light of the same colors; and is arranged to supply these LEDs (20,24,26) with a continuous current having an adjustable amplitude. Further, the device (10) comprises a control unit (30) for controlling the current sources (14,16,18) to adjust the amplitudes of the currents generated by the current sources (14,16,18) so as to generate a desired color of the mixed light emitted by the totality of the LEDs (20,24,26), and a setting unit (36) for influencing the total current of all current sources (14,16,18) to thus set the intensity of the mixed light.