Abstract: The present invention is based on a regulation circuit (200a, 200b) for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . , DN) a triangular a.c. current (ID) varying periodically around a d.c. current value. With this method it is afforded by means of a circuitry provision that both the charging and also the discharging current (IL1) of an inductive reactance (XL1) connected in series to the luminescent diodes (D1, . . . , DN), functioning as a storage choke (L1) for filtering of mains harmonics, flows as diode current (ID) through the luminescent diodes (D1, . . . , DN). The advantage of this method consists in a significant reduction of the overall power loss (PV, ges) of the LED illumination module (100).

Abstract: A regulation circuit is provided for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes a triangular a.c. current varying periodically around a d.c. current value. Circuitry is provided so that both the charging and the discharging current of an inductive reactance connected in series to the luminescent diodes, functioning as a storage choke for filtering of mains harmonics, flows as diode current through the luminescent diodes. An advantage of this method consists in a significant reduction of the overall power loss of the LED illumination module. According to one embodiment, the ceramic circuit board of the LED illumination module has a direct mains current supply, which, for protection from mechanical damage, is accommodated in a transparent housing having a highly transparent polymer mass serving as an optically active lens surface.

Abstract: A retrofit light emitting diode (LED) module may include a carrier with at least one LED, a retrofit connection for mechanical and electrical contact-connection to conventional lamp holders, and an electronic system for driving the at least one LED. At least one part of the electronic system is integrated into the carrier, and the electronic system comprises a sensor system. A retrofit LED module system may include at least two retrofit LED modules and at least one control unit which regulates the retrofit LED modules in an adaptive and synchronized manner.

Abstract: An LED module includes a printed circuit board (PCB) or a surface mount device (SMD) mount, an LED chip mounted on the PCB or the SMD mount, a cover mounted on the LED chip and a surface of the PCB or the SMD mount which surrounds the LED chip. The surface of the PCB or the SMD mount on which the spherical cover is mounted may be covered on its side walls with a white reflective material which is in contact with the LED chip.

Abstract: An LED module includes a printed circuit board (PCB) or a surface mounted device (SMD) carrier, an LED chip mounted directly or indirectly on the PCB or SMD carrier, an optical element arranged on top of the LED chip, and a white reflective layer covering a surface of the PCB or SMD carrier on which the optical element is arranged and/or partially covering the optical element.

Abstract: The present invention is based on a regulation circuit (200a, 200b) for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . ,DN) a triangular a.c. current (ID) varying periodically around a d.c. current value. With this method it is afforded by means of a circuitry provision that both the charging and also the discharging current (IL1) of an inductive reactance (XL1) connected in series to the luminescent diodes (D1, . . . ,DN), functioning as a storage choke (L1) for filtering of mains harmonics, flows as diode current (ID) through the luminescent diodes (D1, . . . ,DN). The advantage of this method consists in a significant reduction of the overall power loss (PV, ges) of the LED illumination module (100).