An optical system includes a plurality of laser light sources and an optical component. A first set of one or more laser light sources is configured to emit optical disinfection light at the optical component. A second set of one or more laser light sources is configured to emit optical communication light at the optical component. The optical component is configured to distribute the optical disinfection light in a first light distribution pattern, and to distribute the optical communication light in a second light distribution pattern. The optical component includes a first set of one or more metamaterial structures configured to distribute, in the first light distribution pattern, the optical disinfection light that is incident on the optical component, and a second set of one or more metamaterial structures configured to distribute, in the second light distribution pattern, the optical communication light that is incident on the optical component.

An optical system includes a plurality of laser light sources and an optical component. A first set of one or more laser light sources is configured to emit optical disinfection light at the optical component. A second set of one or more laser light sources is configured to emit optical communication light at the optical component. The optical component is configured to distribute the optical disinfection light in a first light distribution pattern, and to distribute the optical communication light in a second light distribution pattern. The optical component includes a first set of one or more metamaterial structures configured to distribute, in the first light distribution pattern, the optical disinfection light that is incident on the optical component, and a second set of one or more metamaterial structures configured to distribute, in the second light distribution pattern, the optical communication light that is incident on the optical component.

A system to identify incidents associated with streetlight fixtures based on sensor data from one or more smart sensor devices. Each smart sensor device is coupled to a respective streetlight fixture and captures data from one or more sensors. The data from a single smart sensor device or a plurality of smart sensor devices is aggregated to generate a current data signature of the one or more smart sensor devices. The current data signature is compared to a plurality of known signatures to determine if an incident associated with a streetlight fixture has occurred. Such incidents can include a failed light source, a failing light source, a weather incident, a geologic incident, etc. Depending on the type of incident an instruction is sent to the one or more smart sensor devices to perform one or more responsive actions.

A light-emitting circuit includes first and second light-emitting element strings respectively configured to emit light having a first and second color temperatures; a rectifying circuit configured to rectify a voltage, input by an alternating current (AC) power source, to generate a driving voltage; a string switching circuit configured to select at least one light-emitting element string to be used for light emission from among the first light-emitting element string and the second light-emitting element string; an off/on sensing circuit configured to change a selection of the string switching circuit to change a color temperature of light, which is emitted by the light-emitting circuit, when the AC power source is turned off and then turned on; and a driving circuit configured to turn on, in turn, light-emitting elements in the selected at least one light-emitting element string, according to a change in the driving voltage over time.

A light-emitting circuit includes first and second light-emitting element strings respectively configured to emit light having a first and second color temperatures; a rectifying circuit configured to rectify a voltage, input by an alternating current (AC) power source, to generate a driving voltage; a string switching circuit configured to select at least one light-emitting element string to be used for light emission from among the first light-emitting element string and the second light-emitting element string; an off/on sensing circuit configured to change a selection of the string switching circuit to change a color temperature of light, which is emitted by the light-emitting circuit, when the AC power source is turned off and then turned on; and a driving circuit configured to turn on, in turn, light-emitting elements in the selected at least one light-emitting element string, according to a change in the driving voltage over time.

The present application relates to an LED system with controllable power supply and control method and device thereof. The control method comprises: detecting output port voltages of a main driving module, and when a number of ports whose voltage is less than a first preset voltage or a number of ports whose voltage is greater than a second preset voltage exceeds a first preset value, coarsely adjusting the power supply; determining by each of cascaded slave driving modules an adjustment strategy according to its own output port voltages and an adjustment strategy from a subsequent slave driving module, and sending its adjustment strategy to a previous slave driving module; determining by the main driving module an adjustment strategy of the power supply according to the adjustment strategy from the slave driving module and the output port voltages of the main driving module, and fine-adjusting the power supply.

A lighting system including monitoring of input power and output power parameters to a set of lighting loads to detect power faults and/or anomalies. The set of sensing circuits include primary side and secondary side sensing circuits that communicate with a set of monitoring circuits to process the information supplied by the sensing circuits. If a fault and/or anomaly is sensed or detected, a signal is transmitted to provide an alert.

The subject disclosure relates to solutions for testing lighting systems and in particular, for verifying lighting system operability in the event of a power failure. A process of the disclosed technology can include steps for receiving an interrupt command, toggling an interrupt relay in response to the interrupt command, and measuring one or more lighting characteristics of the lighting array to determine if the second power supply can power the lighting array. Systems and machine-readable media are also provided.

An embodiment provides method for controlling lamp output within an array of lamps, including: receiving sensor data corresponding to one of a plurality of lamps within the array, wherein the sensor data comprises an irradiance value from at least one of: within a lamp sleeve and an irradiance value from outside a lamp sleeve; identifying, based the sensor data, a change in an output of the one of the plurality of lamps; sharing the sensor data with other of the plurality of lamps within the array; and adjusting, in response to the sharing, an output of at least one of the other of the plurality of lamps within the array, thereby compensating for the change in the output of one of the plurality of lamps. Other aspects are described and claimed.

A lighting system with illumination-balancing function is provided, which includes a plurality of lighting devices distributed over a lighting zone. Each of the lighting devices includes a control module and a light-emitting module. The light-emitting module is connected to the control module. When the light-emitting module malfunctions, the control module transmits a malfunctioning signal to the other lighting devices not malfunctioning, such that the brightness of each of the lighting devices, not malfunctioning and adjacent to the lighting device malfunctioning, increases so as to make the illumination of the lighting zone be substantially equal to a predetermined value.