Abstract: An LED module, including a carrier having high reflectivity, wherein a metal layer, preferably a silver layer or a layer of high-purity aluminum, is applied to the carrier. Also disclosed is an LED module, including a carrier having high reflectivity, wherein a metal layer is applied to the carrier, at least one LED chip, and a dam, wherein the metal layer partially covers the surface of the carrier lying under the dam.

Abstract: The invention relates to a direct AC driving circuit and a luminaire for driving at least one LED, the driving circuit comprises a LED string (2) that comprises a series connection of at least two LEDs, wherein the LED string (2) is directly powered from a rectified AC mains voltage and a LED string switching unit (1) that is configured to control at least one LED shortening unit (1?) that is arranged in parallel to at least one LED of the LED string (2?). According to the invention, the driving circuit comprises means configured to provide a low supply voltage (VLow) which is also derived from the rectified AC mains voltage (4), wherein the low supply voltage (VLow) is generated from unutilized voltage of the LED-string (2?).

Abstract: The invention relates to an LED-module (1) for emitting mixed light, preferably white light, comprising a light field (2??;2??) which is divided into several flat sectors for dispensing different light spectra. The flat sectors of the light field (2??;2??) are embodied as sectors of a circle (3c??,3d??;3c??,3d??) and sectors of a circular ring (3a??,3??;3a??,3b??).

Abstract: The present application relates to a LED module (10) for being connected to a DC power supply (11), the LED module comprising a multilayer board (2) comprising a metal surface (2a) and a dielectric layer (2b) arranged thereon, at least one LED chip (1) arranged on the metal surface (2a) of the multilayer board, an encapsulation layer (3) arranged above the at least one LED chip (1), and current regulator means (4) arranged on the multilayer board, wherein the current regulator means (4) are designed to convert a DC input provided to the module (10) to a predefined DC output for being provided to the at least one LED chip (1).

Abstract: The invention relates to a direct AC driving circuit and a luminaire for driving at least one LED, the driving circuit comprises a LED string (2) that comprises a series connection of at least two LEDs, wherein the LED string (2) is directly powered from a rectified AC mains voltage and a LED string switching unit (1) that is configured to control at least one LED shortening unit (1?) that is arranged in parallel to at least one LED of the LED string (2?). According to the invention, the driving circuit comprises means configured to provide a low supply voltage (VLow) which is also derived from the rectified AC mains voltage (4), wherein the low supply voltage (VLow) is generated from unutilized voltage of the LED-string (2?).

Abstract: The invention relates to a method for producing an LED module (1) and comprises at least the following steps:—providing at least one LED chip (4) on a substrate material (2), and—dispensing a not-cured (flowable/liquid) potting compound (3) on top of the LED chip (4), said potting compound (3) containing at least one type of luminescent particles and preferably a matrix material. During the step of dispensing, a predetermined potential is applied directly or indirectly to at least one LED chip (4).

Abstract: The invention relates to an LED module (10, 10?, 10?) for emitting mixed light, preferably white light, comprising: a module plate (11) having at least one ridge (12) which delimits a light field (13), wherein a plurality of LED chips (14, 14?, 14?, 14??) embedded in a casting compound (15) are arranged within the at least one light field (13); and wherein a fluorescent substance or a mixture of fluorescent substances (16, 17) is arranged selectively in the region around a respective LED chip (14, 14?, 14?, 14??). The invention further relates to a method for producing such an LED module (10, 10?, 10?) and to a lighting device having such an LED module (10, 10?, 10?).

Abstract: An LED converter (3) comprises a converter circuit (11) with potential separation (12). The converter circuit (11) has at least one controllable switching means (15). A control device (16) for switching the at least one controllable switching means (15) in a clocked manner is configured to modulate a switching frequency of the at least one controllable switching means (15) in order to transmit information across a potential barrier (12).

Abstract: The invention relates to a device for operating LEDs, comprising a driver module and an LED module (11), which is controlled by the driver module (10) and has at least one LED. The LED module (11) is fed a current by the driver module (10) via a first connection (1), and a second connection (2) is present, preferably as a ground connection (GND). The device is characterized in that the LED module (11) is connected to the driver module (10) by means of a third connection (3), which is designed as a data channel, a voltage fed by the driver module (10) being applied to the data channel.

Abstract: The invention relates to an LED-module (1) for emitting mixed light, preferably white light, comprising a light field (2??;2??) which is divided into several flat sectors for dispensing different light spectra. The flat sectors of the light field (2??;2??) are embodied as sectors of a circle (3c?41 ,3d??;3c??,3d??) and sectors of a circular ring (3a??,3??;3a??,3b??).

Abstract: The present application relates to a LED module (10) for being connected to a DC power supply (11), the LED module comprising a multilayer board (2) comprising a metal surface (2a) and a dielectric layer (2b) arranged thereon, at least one LED chip (1) arranged on the metal surface (2a) of the multilayer board, an encapsulation layer (3) arranged above the at least one LED chip (1), and current regulator means (4) arranged on the multilayer board, wherein the current regulator means (4) are designed to convert a DC input provided to the module (10) to a predefined DC output for being provided to the at least one LED chip (1).

Abstract: The invention relates to a lighting device (1) for generating white light which has at least one strip of three light diodes (LEDs) (2) in a linear arrangement, wherein: a) each LED strip (2) has two outer LEDs (3) and one center LED (4); b) each of the two outer LEDs (3) and the center LED (4) are phosphor-converted white LEDs; and c) the distance of each of the color coordinates of the two outer LEDs to the color coordinates of the mixed light of the two outer LEDs and the center LED is smaller than the distance of the color coordinate of the center LED to the color coordinates of the mixed light of the two outer LEDs.

Abstract: The invention relates to a method for controlling the operation of an LED luminaire (1) which has a plurality of LEDs (5, 6) as light sources. The method has the following steps: evaluation, by a control unit (3) for the LED luminaire (1), of an electrical signal which is produced by a switch, pushbutton or dimming switch (10) which can be operated by a user (11) and is connected to the control unit (3) and supplied with voltage via an interface (23) of the LED luminaire (1), and variation of the color spectrum of the LED luminaire (1) as a function of the evaluated signal.

Abstract: The invention relates to a retrofit LED lamp having an LED module, a driver circuit for supplying power to the LED module, a base for making mechanical and electrical contact with a bulb fitting and a heat sink arrangement for dissipating the heat produced during operation at the LED module and/or the driver circuit. The heat sink arrangement in this case has a metal mount insert consisting of a mount plate with an integrally attached collar, the mount plate bearing, in thermally conductive contact, the LED module, and a transparent upper shell being fitted to the collar of the mount insert in the light exit direction and a thermally conductive lower shell being fitted, in areal contact, in the direction of the base for heat dissipation, said upper shell and said lower shell together forming a housing of the LED lamp which surrounds the LED module and the mount insert.

Abstract: The invention relates to an LED lamp for warm white light having an LED module consisting of at least one color-converted blue or UV LED, and at least one monochromatic LED, preferably a red LED, in the case of which the mixed spectrum produces white light with a color temperature CCT of between 1500K and 2400K, preferably 1700K and 2100K at room temperature, and between 1800K and 2400K, preferably 2100K and 2300K at a stationary operating temperature of, for example, between 70° C. and 80° C. of the LED lamp.

Abstract: The present invention is directed to a cooling system (1) for electronic components (4). The cooling system (1) comprises means (7) for producing cyclic air pressure fluctuations, wherein the electronic components (4) are distanced from the pressure producing means (7). In the vicinity of the electronic components (4) are situated means (5), preferably restrictions like holes, which are affected by the cyclic air pressure fluctuations, and which produce cyclic air jets (6). The air jets (6) affect the surface of the electronic component (4), and since the air jets (6) originate directly in the vicinity of the electronic components (4), an efficient heat transfer is affected. Preferably, the pressure producing means (7) actuate a pressure Pc inside a chamber (2), and turbulent air jets (6) are produced through holes (5) of a substrate (3), onto which electronic components (4) are mounted.