Abstract: High-speed optical communication is very attractive to satisfy high throughput applications. In the meanwhile, it is also desirable to reduce the energy waste resulted from an idle state of the optical transceivers of the communication system. The present invention discloses that both the access point (1200) and the end point device (1100) can operate in at least two different operation states, a normal operation state and a low power state. The low power state is a default state, and the normal operation state is enabled only when a valid trigger is detected. To establish a high-speed optical link (60), the end point device (1100) first sends an optical trigger signal (50) to the access point (1200) in the low power state. The access pint (1200) switches to the normal operation state only when a valid trigger signal is identified after detecting the optical trigger signal (50).

Abstract: A method of controlling a first lighting unit of a group of lighting units is disclosed. The method comprised receiving a first signal communicated between a portable device and the first lighting unit, determining a first signal strength of the received first signal, setting, if the first signal strength exceeds a threshold, the portable device to a first control mode wherein only the first lighting unit of the group of lighting units is controlled by the portable device, and setting, if the first signal strength does not exceed the threshold, the portable device to a second control mode wherein the lighting units of the group are controlled by the portable device.

Abstract: To provide a safer over voltage protection, it is provided a driving circuit for a light emitting source, comprising an input adapted to receive a power supply; a conversion circuit, adapted to convert the power supply and provide a converted power, comprising a power switch (M2); an output, adapted to output the converted power; an output capacitor (C2) connected at the output; a first control circuit coupled to the output and connected to the power switch (M2), adapted to sense a voltage corresponding to the voltage on the output capacitor and control the power switch operate in a power-reducing mode to reduce the converted power when the voltage corresponding to the voltage on the output capacitor sensed by the first control circuit exceeds a first level; and a second control circuit (D15) connected to the output capacitor (C2) and connected to a control terminal of the power switch (M2), adapted to sense a voltage at the output capacitor (C2) and damage and make the power switch (M2) unoperational permane

Abstract: A system and methods are provided for an immersive group lighting interaction. A lighting infrastructure includes a plurality of independently controllable lighting devices. According to an embodiment, users may be granted access to control at least a portion of the lighting infrastructure. Rather than requiring the user to manually control the lighting infrastructure using, for example, the touch screen, a sensor associated with the user's mobile device may track the user. The sensor data may be classified and then mapped to a corresponding control instruction to control the lighting infrastructure. In another embodiment, a computing system receives sensor classifications from multiple users. If a threshold amount of a type of classification is received, the computing system controls a lighting infrastructure according to that type of classification.

Abstract: The invention provides a sensing system for determining a parameter of a set of animals present on a surface area, wherein the sensing system comprises: a controller; at least one range sensor having a Field-of-View to the surface area; wherein the at least one range sensor is configured to at least continually measure heights of animals of the set of animals passing the Field-of-View during a period of time, and to provide a height signal comprising said measured heights during the period of time; wherein the controller is configured to obtain said height signal, and to determine the parameter of the set of animals based on the measured heights during the period of time.

Abstract: The invention provides a horticulture system (1) comprising a plurality of repeating horticulture system units (100) and a control system (300), wherein: each horticulture system unit (100) comprises (i) a horticulture unit space (110) and (ii) a radio transmission pair (120) arranged to monitor the horticulture unit space (110), wherein the radio transmission pair (120) comprises a radio transmitter and a radio receiver arranged in radio signal receiving relationship; the control system (300) is configured to execute in a unit sensing stage (230) a measurement in at least one of the horticulture unit spaces (110) with the respective radio transmission pair (120); the control system (300) is further configured in an operational mode to: (i) execute a first signal sensing stage (231), wherein the first signal sensing stage (231) comprises the unit sensing stage (230) with a first radio transmission pair (121) related to first horticulture unit space (111) thereby providing a first signal (241) to the control s

Abstract: A secondary side controller configured to determine a peak voltage and/or a frequency of a secondary side winding of a power supply converter over a predetermined period of time, wherein, when the converter is in the burst mode, the secondary side controller is configured to instruct a primary side controller to increase the set point, such that the primary side controller operates in the standard mode to increase the converted output voltage, the secondary side controller determining the peak voltage and/or the frequency of the secondary side winding while the primary side controller is operating the converter in the standard mode.

Abstract: The invention relates to an outdoor luminaire (10) for suspended mounting from, or attached to a line (15), the luminaire (10) comprising a first modulation unit (45) and a first antenna unit (50), the modulation unit configured to operate as a communication node in a wireless data network. The antenna unit (50), having an anisotropic radiation pattern, mounted inside a cavity (55) of a luminaire housing (20). The luminaire further comprising a levelling unit (60) attached to the housing on the one hand and the antenna unit on the other, for maintaining an orientation of the antenna unit, when the luminaire is mounted on a line and sways under influence of the elements.

Abstract: A trim attachment system includes a light fixture housing and a first coiled spring bracket having a first coil section and a first elongated section. The first elongated section is positioned in the light fixture housing and attached to the light fixture housing, where the first coil section is attachable to a trim to pull up the trim toward an opening of the housing. The trim attachment system further includes a second coiled spring bracket having a second coil section and a second elongated section. The second elongated section is positioned in the light fixture housing and attached to the light fixture housing, where the second coil section is attachable to the trim to pull up the trim toward the opening of the housing.

Abstract: The present invention relates to a light-emitting diode (LED) filament (1) configured to provide LED filament light and comprising an elongated carrier (2) comprising a first surface (3) and a second surface (3?) arranged opposite to the first surface (3). The LED filament (1) further comprises a plurality of first light-emitting diodes (4). LEDs, distributed along the first surface (3) of the elongated carrier (2), the plurality of first LEDs (4) being configured to emit a first LED light having a dominant peak wavelength within a first wavelength range, and a plurality of second light-emitting diodes (5), LEDs, distributed along the second surface (3?) of the elongated carrier (2), the plurality of second LEDs (5) being configured to emit a second LED light having a dominant peak wavelength within a second wavelength range being different from the first wavelength range.

Abstract: A light fixture (50), comprising: an electronics housing (51); first and second heat sink structures (52, 54, 56, 58, 60, 62) coupled to the electronics housing, wherein each heat sink structure of the first and second heat sink structures is defined at least in part by a heat sink outer arc (64) having first and second end points (72, 74), and wherein each heat sink structure is further defined at least in part by two heat sink radii (66, 68) extending from the first and second end points, respectively, to a center point (P) of the light fixture; first and second light sources (53); at least two lenses (106, 108, 110, 112, 114, 116) comprising a first lens attached to the first heat sink structure and covering the first light source and a second lens attached to the second heat sink structure and covering the second light source, wherein each lens of the first and second lenses is defined at least in part by a lens outer arc (120) having first and second end points (128, 130), wherein each lens is further de

Abstract: The invention relates to a retractable lighting fixture, comprising an elongated drum rotatable over a length axis; and a flexible multilayer lighting sheet movable between a retracted position and a protracted position, with the multilayer lighting sheet in the retracted position being at least partially retracted in one or more windings around the drum and with the multilayer lighting sheet in the protracted position being fully unwound from the drum; the multilayer lighting sheet being composed of at least one LED layer and at least one diffusing optical layer, the at least one LED layer having a first LED layer edge mounted at a first mounting position of the drum and the at least one diffusing optical layer having a first optical layer edge mounted at a second mounting position of the drum, the first mounting position being located at an arc length from the second mounting position.

Abstract: The invention provides a light generating system (1000) comprising (i) a plurality of light sources (110, 120, . . .

Abstract: A light generating system includes first light generating device configured to generate a first wavelength variable light changing between at least two centroid wavelengths having a difference of at least 10 nm, with a changing frequency of at least 50 Hz; a second light generating device configured to generate a second light having a different spectral power distribution from that of the first light generating device; and a luminescent material configured to convert at least part of one or more of the first or the second lights into luminescent light. The light generating system is configured to generate white system light including the luminescent light, the first device light, and the second device light.

Abstract: A bracket (220) for a linear luminaire (100), the bracket (220) comprising: a body (280) having a top body wall (222), first and second side body walls (227-1, 227-2) that extend downward from the top body wall (222), each side body wall (227-1, 227-2) comprising a flange (228-1, 228-2) that extends outward from a bottom of the first and second side body walls (227-1, 227-2), and a tab (230) that extends outward from a rear of the first or second side body walls (227-1, 227-2), wherein the top body wall (222) and the first and second side body walls (227-1, 227-2) form a cavity (290) that extends along a length of the body (280).

Abstract: A LED filament (2,20) configured to provide LED filament light. The LED filament comprising an elongated carrier (7) extending in a lengthwise direction, said elongated carrier comprising a first major surface (7a). The LED filament further comprises a plurality of LEDs (8) arranged on said first major surface and configured to emit LED light, a first layer (9) free from a luminescent material encapsulating or covering said plurality of LEDs and at least partly encapsulating or covering said first major surface, said first elongated translucent layer having a width, W1, transverse to said lengthwise direction, and a second layer (10) comprising a luminescent material configured to partly convert said LED light, the second layer is arranged on an outer surface (9a) of said first layer, such that the second layer is contained within the width, W1, of the first layer.

Abstract: The invention provides a method of providing horticulture light to a plant (1) in a horticulture arrangement (1000), the method comprising providing during a controlling mode first horticulture light (1111) to the plant (1) wherein at least 15% of the photons of the first horticulture light (1111) have a wavelength selected from the range of 700-800 nm, wherein at least 45% of the photons of the first horticulture light (1111) have a wavelength 5 selected from the range of 640-700 nm, and wherein at maximum 10% of the photons of the first horticulture light (1111) have a wavelength selected from the range of 400-500 nm.

Abstract: A system (1) for causing at least one of a plurality of lighting devices (31-35) to render light effects specified in a light script is configured to determine for each respective light effect of the light effects an allocation of the respective light effect to one or more first lighting devices (31-33) of the plurality of lighting devices, select, from the plurality of lighting devices, a second lighting device (34) to which none of the light effects has been allocated, and transmit a request to the second lighting device. The request requests the second lighting device to control the one or more first lighting devices to render the light effects and defines light effects for the one or more first lighting devices as specified in the light script.

Abstract: The present invention relates to a lighting arrangement (1) for outdoor illumination, the lighting arrangement comprising at least one first light source for emitting a first light and at least one second light source arranged at a distance from the first light source and arranged for emitting a second light. The lighting arrangement further comprises a modulating optical element (7) for converting the first light into a modulated first light providing a first illumination pattern on a first target surface (4?), wherein the first illumination pattern comprises a sequence of alternating illuminance peaks. The modulating optical element (7) further converts the second light into a modulated second light providing a second illumination pattern on a second target surface (4?), wherein the second illumination pattern comprises a sequence of alternating illuminance peaks.

Abstract: An isolated driver generates a PWM load drive level signal at the primary side and provides this to the secondary side via an optocoupler. Power consumption of the load is also sensed at the primary side. A drive level is sensed at the secondary side and compared at the secondary side with the load drive level to provide an error signal for the primary side controller. A frequency of the PWM load drive level signal is adjusted and the power consumption of the load is monitored in response to the frequency adjustment. The duty cycle of the PWM load drive level signal can then be adapted to compensate for errors introduced by the optocoupler.