An LED module is provided that includes an LED circuit board having a substrate and an array of LEDs and an electrical connector mounted on the substrate. The LED module can be removed from an optical system of a luminaire by electrically uncoupling the LED circuit board from the luminaire and mechanically uncoupling the LED module from the luminaire without removing other elements of the optical system from the luminaire. A luminaire is provided that includes a controller and an optical system having an LED module. The LED module has an LED circuit board electrically coupled to the controller. The LED circuit board has a substrate and an array of LEDs mounted thereon. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.

An LED module and luminaire are provided. The LED module includes an LED circuit board having an array of LEDs powered by an electrical connector. The array of LEDs includes two or more pluralities of LEDs. The LEDs of a first plurality are rotated relative to the LEDs of a second plurality. The rotation amount is not an integer multiple of 90. The LEDs of the first plurality are not rotated relative to each other, and the LEDs of the second plurality are not rotated relative to each other. The LED module can be removed from an optical system of the luminaire by electrically uncoupling the LED circuit board and mechanically uncoupling the LED module from the luminaire without removing other elements of the optical system from the luminaire.

An LED module and luminaire are provided. The luminaire includes a controller and an optical system with adjustable optical elements and an LED module with an LED circuit board electrically coupled to the controller. The LED circuit board includes an array of LEDs configured in two or more concentric zones, each zone including a plurality of LEDs. Intensity of the LEDs of a first zone is controlled independently of the LEDs of a second zone. The controller controls the intensity of at least the first zone based upon a configuration of the adjustable optical elements. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.

An LED module and luminaire are provided. The luminaire includes a controller and an optical system with adjustable optical elements and an LED module with an LED circuit board electrically coupled to the controller. The LED circuit board includes an array of LEDs configured in two or more concentric zones, each zone including a plurality of LEDs. Intensity of the LEDs of a first zone is controlled independently of the LEDs of a second zone. The controller controls the intensity of at least the first zone based upon a configuration of the adjustable optical elements. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.

A lighting system (100; 120) comprises at least one lamp (10) and a processing unit (20) for estimating an end-of-life of the at least one lamp (10). The processing unit (20) is configured to receive a lamp burning time during which the at least one lamp is turned on and a forecasted temperature over a selected period of time at a location of the at least one lamp. The processing unit (20) is configured to estimate the end of life of the at least one lamp based on the lamp burning time and the forecasted temperature. By using the forecasted temperature, use of dedicated lamp sensors measuring internal parameters of the lamp usable for the end-of-life estimate may be avoided and the estimate may be simplified.

Provided are an open-mode protection device and an electronic device having the same. An open-mode protection device according to an embodiment of the present invention is connected in parallel to each of a constant current source and a load configured with a light emitting diode (LED). The open-mode protection device comprises a first external electrode connected to one sides of the constant current source and the load; a second external electrode connected to the other sides of the constant current source and the load, and a ground; a protection unit configured to bypass, to the ground through the second external electrode, an overvoltage or an overcurrent flowing into the first external electrode; and a current suppressing unit connected in series to the protection unit and configured to sense a temperature or current of the protection unit and reduce the current of the protection unit as the temperature or current increases.

An emergency lighting unit including a light source, a wireless communication module configured to receive a wireless communication signal, and a controller connected to the wireless communication module. The controller is configured to set a system parameter of the emergency lighting unit based on the wireless communication signal, and control the illumination of the light source based on the one system parameter.

A lamp is provided. The lamp includes at least one light emitting diode (LED) and an electronic circuit configured to provide power to the at least one LED. The lamp includes at least one flat circuit board having mounted thereto the at least one LED and the electronic circuit. The at least one flat circuit board acts as a heatsink to dissipate heat from the at least one LED and acts as a plurality of circuit paths for the electronic circuit and the at least one LED.

A luminaire includes: at least one digital sensor; an illumination element; a main power supply including driver functions configured to provide power to the illumination element; and an integrated digital lighting controller in communication with the main power supply and the at least one digital sensor. The integrated digital lighting controller configured to: receive digital signals corresponding to a sensed parameter from the at least one digital sensor; determine a lighting characteristic for the illumination element based at least in part on the digital signals from the at least one digital sensor; and generate one or more control signals to the main power supply to control the driver functions to provide power to the illumination element to produce the determined lighting characteristic.

The lighting device includes a power conversion circuit and a control circuit. The power conversion circuit includes a high voltage side output terminal and a low voltage side output terminal to be connected to a light source, and a step-down chopper circuit. The control circuit performs a lighting operation of controlling the power conversion circuit to develop a DC output voltage between the high voltage side output terminal and the low voltage side output terminal. The control circuit starts a protective operation of limiting a current to be supplied to the light source when the output voltage is equal to or higher than a threshold value. The threshold value is in a range of 1.2 to 1.3 times a rated voltage of the light source.