Abstract: A light emitting device (1) comprising at least one LED filament (2) adapted for, in operation, emitting LED filament light, the at least one LED filament comprising a carrier (6) and a plurality of LEDs (5) arranged on the carrier and adapted for, in operation, emitting LED light, and a heat sink element (3), the at least one LED filament (2) being arranged extending spiraling around a vertical center axis LA of the light emitting device, wherein the heat sink element (3) further is arranged extending spiraling around the vertical center axis of the light emitting device, and wherein the heat sink element (3) is arranged extending from the at least one LED filament towards the vertical center axis of the light emitting device.

Abstract: In one aspect, a device is adapted to transmitting power to, or receive power from, a remote device over first and second communication lines (DALI+, DALI?) and to communicate with the remote device over the first and second communication lines. A first driver implements a first communications protocol which comprises coupling the first and second communication lines together to encode a first signal level and isolating the first and second communication lines from each other to encode a second signal level. This may be a DALI protocol. A second driver implements a second communications protocol which comprises modulating the first communication line with a signal having a low modulation depth. The second communications protocol means there is always a voltage difference between the two communication lines to enable continuous power harvesting. A second aspect relates to efficient power transfer by disabling a current limiter function, when possible.

Abstract: A light-emitting module (100) is disclosed, the light-emitting module comprising a first light-emitting diode, LED, array (104) arranged on a substrate (102). The first LED array has a first perimeter (106) and comprises a plurality of first LEDs (108) configured to emit first light. The light-emitting module further comprises a second LED array (110) arranged on the substrate. The second LED array has a second perimeter (112), smaller than the first perimeter and comprises a plurality of second LEDs (114) configured to emit second light. The second LED array is arranged off-center within the first LED array. Further, the light-emitting module comprises a controller (116) configured to individually control the first LED array and the second LED array.

Abstract: A circuit is provided for energy metering and surge current detection. It uses a current transformer. A first current sensing arrangement is connected to the secondary side of the transformer for energy metering and a second current sensing arrangement is connected to the secondary side, with a high pass filter, for surge current detection. A single component is thus able to provide energy metering and surge detection.

Abstract: The invention provides a light generating system (1000) configured to generate in an operational mode system light (1001) having a spectral power distribution with at least 85% of the spectral power in emission bands (111, 121, 131, 141) in four basic wavelength ranges of each at maximum 50 nm width, of which at least three of the four basic wavelength ranges are selected from a first wavelength range of 452 nm+/?25 nm, a second wavelength range of 504 nm+/?25 nm, a third wavelength range of 560 nm+/?25 nm, and a fourth wavelength range of 617.5 nm+/?25 nm, wherein the emission bands (111, 121, 131, 141) have full width half maxima of at maximum 30 nm.

Abstract: A controller (1) for performing presence detection with a first sensor system (41,42) and a second sensor system (31-37) is configured to receive sensor signals from the first sensor system and/or the second sensor system. The second sensor system is of a different type than the first sensor system. The controller is further configured to determine which first one or more areas of the plurality of areas are in both the sensor range of the first sensor system and the sensor range of the second sensor system based on the sensor signals and control the second sensor system to perform, with respect to the first one or more areas, a second task other than a first task to be performed by the first sensor system. The first task comprises obtaining sensor data to be used for presence detection in the first one or more areas.

Abstract: A lighting device (100) for illuminating a surface (110). The lighting device comprises at least one first light source (120) configured to emit a first light beam (140) in a first direction and at least one second light source (130) configured to emit a second light beam (150) in a second direction that is not parallel to the first direction. The first light beam (140) has a first spectral power distribution, the second light beam (150) has a second spectral power distribution and the second spectral power distribution is different from the first spectral power distribution. The lighting device further comprises at least one light-delimiting element (160) adjustable relative to at least one of the at least one first light source and the at least one second light source.

Abstract: This invention relates to a power supply system for an optical wireless communication system where a modem (212) is connected to a plurality of transceivers (11). The underlying idea being that the transceivers (11) are powering the modem (212), rather than the modem (212) powering the transceivers (11). To achieve this, a power combiner is provided that can receive power from the transceivers (11). The transceivers (11) power down when no endpoint is detected and use a subset of emitters, in which case the modem (212) can also be switched to a lower power mode.

Abstract: The invention relates to a luminaire (1d) connected to a plurality of further luminaires (1a-c, 2a-e) allocated to at least one group via a network. In order to detect and correct a de-synchronization, the luminaire (1d) is configured to (i) receive a status message from each of the further luminaires (1a-c, 2a-e), each status message including status information indicating a current status of the respective luminaire (1a-c; 2a-e) and trigger information about a trigger that prompted the respective luminaire (1a-c; 2a-e) to adopt the current status, (ii) select at least some of the received status messages based on the trigger information included therein, and (iii) compare the selected status messages and change its own status to a new status based on the comparison. Further, the invention is related to a corresponding method for changing the status of the luminaire (1d).

Abstract: There is provided a light emitting diode, LED, filament lamp (100) which provides LED filament lamp light (100?). The LED filament comprises a first linear array of LEDs (101) and a second linear array of LEDs (106), and a carrier (103). The first linear array of LEDs (101) are arranged on a first surface (102) of the carrier (103) and includes only first LEDs (104) which are configured to emit first white light (105). The second linear array of LEDs (106) are arranged on a second surface (107) of the carrier (103), opposite to said first surface (102), and includes only second LEDs (108) which are configured to emit color controllable light (109). The LED filament light (100?) comprises the first white light (105) and/or the color controllable light (109).

Abstract: A light emitting device (1) comprising at least one light source (2) adapted for, in operation, emitting light (7, 9), at least one free-shape refractive lens element (3) configured to aim light (7) emitted by the at least one light source (2) in a first direction towards a surface (22) to be illuminated by the light emitting device (1), the lens element (3) comprising a first end (11) adapted for facing in a direction towards the surface (22) and a second end (20) adapted for facing in a direction away from the surface (22), at least one first TIR element (4), the first TIR element (4) being a collimating TIR element configured to collimate and redirect light (9) emitted from the at least one light source (2) in a second direction away from the surface (22) into light (9?) propagating parallel and in a downward direction, the first TIR element (4) comprising a light incoupling surface (19) and a light outcoupling surface (13), the light incoupling surface (19) being arranged at the second end (20) of the len

Abstract: A method for providing uninterrupted control of a node via a segment controller; wherein the method comprises: executing a plurality of logical instances of a control application on the segment controller; detecting a malicious signal indicative of an unauthorized access request to the segment controller; determining that a logical instance which currently controls the node has been affected by the unauthorized access request; determining a logical instance, of the plurality of logical instances, which is unaffected by the unauthorized access request; switching the logical instance of the segment controller which controls the node from the affected logical instance to the unaffected logical instance.

Abstract: A lighting arrangement (100), comprising: LEDs (110), a PCB (120) arranged to support the LEDs, a light guide element (130) configured to guide light emitted from the LEDs, wherein the light guide element is plate-shaped and arranged in a plane, P, and wherein the LEDs are arranged at an edge (140) of the light guide element, a support structure (150) fastened to the PCB and arranged at at least a first edge portion (155) of the light guide element, wherein the support structure comprises a groove (190), wherein the lighting arrangement further comprises a cover plate (200) comprising flanges (210) matingly and biasedly arranged in the groove, whereby the support structure, via first (160) and second portions (170) thereof, clamp the at least a first edge portion of the light guide element for positioning of the LEDs at the edge of the light guide element.

Abstract: The invention provides a light generating system (1000) comprising a light generating device (100), a luminescent body (200), and first optics (410), wherein: •the light generating device (100) is configured to generate device light (101); wherein the light generating device (100) comprises a laser; •the luminescent body (200) comprises a luminescent material (210), wherein the luminescent material (210) is configured to convert at least part of the device light (101) into luminescent material light (211), and wherein the luminescent body (200) is transmissive for at least part of the luminescent material light (211); •the first optics (410) are transmissive for at least part of the device light (101) and reflective for at least part of the luminescent material light (211), wherein the first optics (410) comprise a primary optic surface (411) having a first surface area A1, wherein the primary optic surface (411) is configured in a light receiving relationship with the light generating device (100); •the lumi

Abstract: An electronic device able to communicate using both a long-range and a short-range wireless communication technology. A transceiver of the electronic device switches its operation mode based on a power saving mode of the long-range wireless communication technology. In particular, the electronic device switches between a short-range mode and a long-range mode based on the power saving mode of the long-range communication technology.

Abstract: The present invention relates to a color tunable and/or color temperature tunable LED filament (20, 22, 24), said LED filament comprising an elongated carrier (220), said elongated carrier comprising a first major surface (222) and a second major surface (224) arranged opposite to said first major surface, a plurality of LEDs (210) arranged in at least one linear array on said first surface of said elongated carrier, wherein the plurality of LEDs includes LEDs of different colors and/or different color temperatures, a first elongated transparent or substantially transparent layer (230) covering the plurality of LEDs on the first major surface and also at least partly covering said first major surface, and a first elongated light scattering layer (240), arranged to at least partially cover said first transparent or substantially transparent layer.

Abstract: The invention relates to pre-conditioning an animal(s) to (the risk of) heat stress. The invention provides a control device for controlling a lighting device to illuminate at least one animal in a space, wherein the control device is configured to: obtain prediction data indicative of a value of an environmental condition in said space during a future time period; determine said value of the environmental condition based on the prediction data; determine a prediction of heat stress of the at least one animal in said space during the future time period if said value of the environmental condition falls within a predefined limit for heat stress; control, upon determining said prediction of heat stress, a lighting device to illuminate the at least one animal in said space with a lighting characteristic at least partly before said future time period.