Abstract: A light emitting device (1) comprising an element (2) comprising a volumetric low scattering material, the element comprising opposite first and second light incoupling surfaces (21, 22) and a circumferential surface (23) extending between the first and second light incoupling surfaces, at least one red laser diode (3) configured to emit red laser light (31), and being arranged at one of the light incoupling surfaces such that the red laser light is coupled into the element through the said one of the first and second light incoupling surfaces, a collimator (4) arranged and configured to collimate the red laser light (31), at least one LED (5) configured to emit LED light, the LED being arranged at one light incoupling surface, such that the LED light is coupled into the element through the said incoupling surface, and the scattering material being configured to make the path of laser light visible.

Abstract: The present invention relates to a customizable light strip (10) mountable on a mounting surface (36), comprising: an elongated substrate (12); a linear LED array (18) with a plurality of LED nodes (20) mounted on a surface (14a) of the elongated substrate; and an interconnection structure (22) electrically interconnecting the plurality of LED nodes, wherein the elongated substrate comprises partial separation lines (24) between at least some of the plurality of LED nodes of the linear LED array, which partial separation lines extend from one longitudinal edge (16a) of the elongated substrate and partly across the elongated substrate and do not intersect the interconnection structure, and wherein the customizable light strip after partial separation at one or more of the partial separation lines is bendable in a plane of said mounting surface.

Abstract: The present invention generally relates to the field of a lighting unit (100), and in particular to a lighting unit (100) that is suitable for being part of a suspended ceiling (0001). The lighting unit (100) comprises one or more lighting tiles (1000) and an interface component (2000). The interface component (2000) forms at least a portion of a grid system (1020) for the suspended ceiling (0001) and for supporting the lighting tile (1000). The interface component (2000) comprises a central support portion (2001) having a first end (2002) facing a ceiling (0002), and a second end (2003) having a first flange (2004) and a second flange (2005) that are opposing each other.

Abstract: A dimmable LED lamp is provided, including an accessory, an end cap, and LEDs. The accessory includes a wireless receiver and an IR emitter. The wireless receiver receives a wireless dimming signal. The IR emitter transmits an IR signal corresponding to the wireless dimming signal. The dimmable LED lamp includes an end cap. The end cap includes an IR sensor, an MCU, and a driver circuit. The IR sensor receives the IR signal and transmits a corresponding sensor signal. The MCU receives the sensor signal and transmits a corresponding dimming control signal. The driver circuit receives an AC mains power signal from the AC mains power supply, receives the dimming control signal, and generates an LED power signal based on the AC mains power signal and having a duty cycle corresponding to the dimming control signal. The LEDs receive the LED power signal.

Abstract: To satisfy the application requirement to meet a high data rate and obtain a large coverage in an optical wireless communication system, an optical front-end subsystem (100) is disclosed in the present invention. The optical front-end subsystem (100) comprises a first photodiode (110) with a first active surface area and a second photodiode (120) with a second active surface area, wherein the second active surface area is larger than the first active surface area. Depending on the received signal strength, either the branch with the first photodiode (110) or the branch with the second photodiode (120) is selected to provide an output signal of the optical front-end subsystem (100). Receiver diversity is achieved by making use of the first photodiode to support high speed communication and the second photodiode to support large coverage communication.

Abstract: The invention provides a sensor device for controlling an electrical device, wherein the sensor device comprises a controller and a range sensor; wherein sensor device is configured to be mounted in an orientation relative to gravity; wherein the range sensor is configured to: obtain the orientation of the sensor device relative to gravity; operate in a first detection mode for detecting an object within a first predetermined distance range from the range sensor when the orientation is in a first predetermined orientation; wherein the controller is configured to output a control signal arranged for controlling the electrical device upon the range sensor detecting the object.

Abstract: The invention provides a light generating system (1000) comprising one or more light generating devices (100), a lightguide element (500), a reflector (410), and optionally a light transmissive envelope (600), wherein: (A) the one or more light generating devices (100) are configured to generate device light (101); (B) the lightguide element (500) comprises a light transmissive body (510) comprising light transmissive material (502), which is light transmissive for the device light (101); wherein the light transmissive body (510) comprises an axis of elongation (501) and a body length (L1), wherein the light transmissive body (510) comprises a first end (511) and a second end (512); wherein the light transmissive body (510) comprises (i) a first outer face (521), comprised by the first end (511), (ii) a second outer face (522), comprised by the second end (512), and (iii) an external side face (523) bridging a distance between the first outer face (521) and the second outer face (521) and having a distance (d

Abstract: A mechanism for lamp to lamp communication within a luminaire. This is achieved by a field controller of a master lamp controlling the magnitude of an electric/magnetic field generated by a field generating element, where a slave lamp detects the electric/magnetic field using a field detection element. One of more properties of the light output by the slave lamp are dependent upon the detected electric/magnetic field, meaning that the master lamp is able to control the operation of the slave lamp.

Abstract: The invention relates to the field of wireless mesh communication networks and in particular to methods, networks and nodes (101) for use in such a wireless mesh network (100) for establishing routes in the wireless mesh network (100) by pro-actively regularly sending many-to-one route requests at randomized intervals by wireless network nodes (101) that can operate as a proxy nodes for a mobile wireless device (104) communicating using a first wireless communication protocol and further nodes (102, 103) in the wireless mesh network (100) communicating using a second wireless communication protocol.

Abstract: A light emitting device configured to emit light with a total color temperature (CTtot), said light emitting device comprising at least one first light emitting diode (LED) filament, and at least one second LED filament, wherein each of the at least one first LED filament and the at least one second LED filament comprises an elongated carrier, and an array of light emitting diodes mounted on said substrate; and a controller for individually controlling said at least first LED filament and said at least one second LED filament, wherein said at least one first LED filament is arranged to emit light of a first color temperature (CT1), said first color temperature being controllable in a first color temperature range, from CT1low to CT1high, wherein said at least one second LED filament is arranged to emit light of a second color temperature (CT2), said second color temperature being controllable in a second color temperature range, from CT2low to CT2high, and wherein said controller is configured to control said

Abstract: A module (10) adapted for fitting to a luminaire (100), comprising: a main module housing (50); a rotate plate (60) coupled to the main module housing, and rotatable relative to the main module housing; a connection interface (70) for connecting the module to a corresponding connection interface of the luminaire, wherein the connection interface (70) is connected to the rotate plate; and a rotatable electrical connection (80) between the rotate plate and the main module housing, wherein the rotate plate (60) comprises a locking feature (62) which engages with a retaining feature (52) of the main module housing to lock the rotate plate with a selected relative rotational position between the rotate plate and the main module housing, wherein the locking feature (62) is provided on an elastically deformable region (64) of the rotate plate such that the locking feature can be brought out of engagement from the retaining feature by manual deformation of the deformable region (64) thereby to enable selection of the

Abstract: A horticulture lighting arrangement comprises (i) a lighting system configured to provide horticulture light having a controllable spectral power distribution, and (ii) a control system configured to control the spectral power distribution of the horticulture light; wherein in an operational mode of the horticulture lighting arrangement the horticulture lighting arrangement is configured to provide the horticulture light according to an on-off schedule wherein consecutively an on-period (D) and an off-period (N) are applied.

Abstract: Because of the line-of-sight character of optical wireless communication and a limited field-of-view of optical receivers, the coverage of an access point (120) and the overlapping coverage area of adjacent access points (120) in an optical system are smaller as compared to a RF system. It turns more challenging to support an end point (110) to roam securely in an optical multi-cell wireless communication network (100). To address that problem, a subsystem is disclosed to select for the end point (110) a candidate access point out of the plurality of access points (120) in view of one or more neighbor relationships, and to inform the end point (110) about the candidate access point to trigger the end point (110) to start a procedure for pre-establishing a new pairwise transient key between the end point (110) and the candidate access point (120) for a secure handover.

Abstract: A resonant inverter has a switch network from which a phase signal is provided representing the phase of the switching signal. A resonant tank circuit is coupled to the first switch network output and provides a feedback signal comprising a resonance voltage across a circuit element of the resonant tank circuit. A reference current to be drawn from the input node is set and a reference phase is set based on the reference current. The switching signal for the switch network is controlled based on a phase difference between the resonance voltage and the phase signal, and based on the reference phase. This resonant inverter employs a phase modulation scheme as the control scheme for the switch network of a resonant inverter. This approach is suited for high and very high frequency operation of resonant converters, for example up to tens of MHz.

Abstract: This invention relates to a safety measure taken against unsafe exposure of high-intensity laser light that is relevant for the reliable and safer operation of laser-based lighting devices. According to this invention, a lighting device comprises a first light-emitting semiconductor device and a light-conversion device. The first light-emitting semiconductor device is a laser device configured to generate a first light output and the 5light-conversion device is configured to receive the first light output and convert at least part of the first light output into a converted light output. The lighting device further comprises an optical element configured to receive the converted light output from the light-conversion device. The optical element is configured to transmit the converted light output and the first light output, and attenuate the first light output above a threshold value of the first light output.

Abstract: The present disclosure relates to a light-emitting diode, LED, filament system (770) comprising a LED filament (100) and a controller (771). The LED filament comprises a carrier (120) arranged in the shape of a spiral formed by successive loops (250). The LED filament further comprises a plurality of LEDs (110) arranged in a linear array on one side of the carrier. The LEDs are arranged along the carrier in sections (140a-f), each section having a position along the spiral-shaped carrier. The controller is configured to control a power supply to a section, or to a group of sections, of the LED filament. The controller is adapted to control a section based on its position, or a group of sections based on the positions of the sections of said group.

Abstract: An LED filament device is provided with a LED filament that has a plurality of sources of light. The sources of light are configured in an k*1 array with k=2 columns, and the array has a first set of at least 20 sources of light distributed over the columns. In a first column of the first set at least 90% of the total number of sources of light are selected from the group of (i) first sources of light and fifth sources of light. In a second column of the first set at least 80% of the total number of sources of light are selected from the group of second sources of light, third sources of light and fourth sources of light.

Abstract: A device (11) for providing audio and/or video content to a media rendering device over a physical connection and controlling one or more wireless lighting devices (31,32) to render light effects based on an analysis of the audio and/or video content is configured to obtain relative distance information (201-204). The relative distance information is indicative of distances between the device and each of a plurality of wireless lighting devices (31-34). The device is further configured to select, based on the relative distance information, the one or more wireless lighting devices from the plurality of wireless lighting devices, perform the analysis of the audio and/or video content, determine the light effects based on the analysis of the audio and/or video content, and control the selected one or more wireless lighting devices to render the light effects.

Abstract: The invention provides a light generating device (100) comprising (i) n filaments (200), (ii) an power distribution unit (400), and (iii) electronics (500); wherein: (a) each of the n filaments (200) comprises one or more solid state light sources (10), wherein n?1, wherein each of the n filaments (200) comprises at least m electrical contacts (221), wherein m?2; and wherein the n filaments (200) are configured to generate filament light (201); (b) the power distribution unit (400) comprises k electrically conductive tracks (410) separated by electrically insulating material (420), wherein k?2; (c) at least two of the electrical contacts (221) of the n filaments (200) are functionally coupled to at least two different electrically conductive tracks (410); (d) the at least two different electrically conductive tracks (410) are functionally coupled to the electronics (500); and (e) the electronics (500) comprise one or more of a control system, a driver, and a transformer.

Abstract: The invention provides a light generating system for arthropod keeping, configured to generate system light, wherein in a first operational mode the light generating system is configured to provide the system light having a spectral power distribution, wherein the spectral power distribution comprises: a first spectral power E1 in a first wavelength range of 360-780 nm; a second spectral power E2 in a second wavelength range of 360-400 nm; a third spectral power ES in a third wavelength range of 400-480 nm; a fourth spectral power EM in a fourth wavelength range of 480-580 nm; a fifth spectral power EL in a fifth wavelength range of 580-700 nm; a sixth spectral power E6 in a sixth wavelength range of 620-700 nm; a seventh spectral power E7 in a seventh wavelength range of 700-780 nm; and wherein: 1.75?EM/ES?20; E2/E1?0.005; E7/E1?0.022; and EL/E1?0.3; or 0.3<EL/E1?0.8, and 3.4?E6/ES?14, and wherein the sixth wavelength range comprises a peak between 650-690 nm.