Abstract: The present invention is directed to an electrical supply apparatus having an input for connecting the electrical supply apparatus to a mains supply which provides an alternating voltage as input voltage, having an output for connecting the electrical supply apparatus to a load, wherein the output provides a DC voltage as output voltage, having a rectifier which rectifies the input voltage to form a rectified input voltage, having a PFC module which comprises a smoothing device for smoothing the rectified input voltage and an active power factor correction device, wherein the power factor correction device is designed to form a time-dependent supply current for the smoothing device depending on a time-dependent current form signal in such a way that a time-dependent input current in the PFC module is matched to the current form signal, wherein the current form signal is produced by an analogue circuit.

Abstract: The invention relates to a method for generating light with a desired light colour by using at least one light-emitting diode emitting red r-LED, at least one light-emitting diode emitting green g-LED, at least one light-emitting diode emitting blue b-LED and at least one light-emitting diode emitting white w-LED. In order to improve the CRI value, according to the invention it is proposed that weighting values ascertained according to the RGB algorithm and further weighting values ascertained according to the RGBW algorithm be combined together by using a correction factor.

Abstract: It is an object of the invention to provide an improved illumination apparatus for the dazzle-free illumination of a region monitored by a night vision instrument. To this end, an illumination apparatus 1 for the dazzle-free illumination of a region monitored by a night vision instrument 5 is provided, having an illumination device 8, the illumination device 8 comprising at least one light-emitting diode chip 15 and a luminous means 16, the light-emitting diode chip 15 being formed in order to emit electromagnetic radiation of a first wavelength range, and the luminous means 16 being formed in order to convert the radiation of the first wavelength range, generated by the light-emitting diode chip 15, into light with light components in the visible spectrum in a second wavelength range, wherein the second wavelength range is shorter than 610 nm.

Abstract: It is an object of the invention to provide an improved illumination apparatus for the comfortable illumination of a region monitored by a night vision instrument. To this end, an illumination apparatus 1 having an illumination device 8 is provided, the illumination device 8 comprising at least one LED 9a,b,c and the illumination device 8 being formed in order to emit mixed light with light components in the visible range, and having an optical filter device 10 for filtering the mixed light emitted by the illumination device 8, the optical filter device 10 being formed in order to block light with a cutoff wavelength of more than 610 nm, wherein the illumination device 8 comprises a white LED 9a, a green LED 9b and a red LED 9c, which together produce the mixed light.

Abstract: The invention relates to a lighting device for illumination in an aircraft cabin, having a U-section (1) made of aluminium, wherein the U-section (1) comprises two limbs (3) extending from an inner side of a section baseplate (2), wherein at least one circuit board (4) carrying a multiplicity of LEDs (5) is mounted on an outer side (A) of the section baseplate (2), opposite the inner side, in such a way that heat generated during operation of the LEDs (5) is at least partially dissipated via the U-section (1), and wherein a transparent cover (6) configured in the form of a further U-section, which permits an emission angle (?) of from 150° to 180° with respect to a section plane extending perpendicularly through the limbs (3) and the section baseplate (2), is applied on the U-section (1).

Abstract: The invention is based on the object of proposing an improved illumination apparatus for glare-free illumination of an area monitored by a night vision device. For this purpose, an illumination apparatus for glare-free illumination of an area monitored by a night vision device is proposed, the night vision device picking up light of wavelength greater than a limiting wavelength, having an illumination device which comprises at least one LED, the illumination device being designed to emit light with light fractions in the visible region, and having an optical filter device which is designed as an interference filter device, a transmission of the optical filter device being greater, in a visible wavelength region below the limiting wavelength, than 80%, preferably greater than 90% for the light of the illumination device in the visible wavelength region, and being less, in a red wavelength region above the limiting wavelength, than 1%, preferably less than 0.

Abstract: A lighting device for an AC power supply comprising at least two lighting groups, wherein each lighting group has a group input and a group output and at least one LED, wherein the at least one LED is arranged between the group input and the group output, wherein the lighting groups are connected to one another in series.