Abstract: A method and system for opening garage doors is disclosed. The invention being comprised of several parts: software for mobile devices, a vehicle-dedicated, Bluetooth™ enabled beacon and a wireless door controller unit. The aforementioned software transmitting a wireless open command to said garage door controller once said beacon is within a preset range determined by said mobile device's Global Positioning System (GPS). For example, in one embodiment users place a multitude of beacons in different vehicles. As one vehicle approaches a garage, a mobile device will decipher its location and interact with the door controller. Upon entering a preset boundary, the garage door associated with said vehicle will open. An object of the invention is to enhance garage door automation.

Abstract: A method and system for opening garage doors is disclosed. The invention being comprised of several parts: software for mobile devices, a vehicle-dedicated, Bluetooth™ enabled beacon and a wireless door controller unit. The aforementioned software transmitting a wireless open command to said garage door controller once said beacon is within a preset range determined by said mobile device's Global Positioning System (GPS). For example, in one embodiment users place a multitude of beacons in different vehicles. As one vehicle approaches a garage, a mobile device will decipher its location and interact with the door controller. Upon entering a preset boundary, the garage door associated with said vehicle will open. An object of the invention is to enhance garage door automation.

Abstract: An LED track-lighting system includes an LED for emitting light. A light-transmitting element captures light emitted by the LED light and emits it over at least a portion of the track.

Abstract: The type of an LED power driver (i.e., a magnetic transformer or an electronic transformer) is determined by manipulating the AC voltage produced by the power driver so that it may be analyzed and the type of power driver reliably determined. In various embodiments, a system for detecting an AC power supply type includes a circuit for monitoring a negative half or a positive half of an output voltage of the AC power supply and an analyzer for determining the AC power supply type based at least in part on a presence or absence of an envelope in the monitored output voltage.

Abstract: LEDs that provide street illumination are used to create emergency signals. This facilitates simple retrofitting of existing streetlighting infrastructure. In one embodiment, a streetlight comprises an LED set that itself comprises or consists of a plurality of LEDs collectively producing a white light output. The streetlight also includes a receiver for receiving a signal of an alarm condition, and a controller for (i) disabling the LED set during a daylight period, (ii) maintaining the normal operating mode during a lighting period distinct from the daylight period, and (iii) in response to the alarm condition detected by the receiver, de-activating at least one of the LEDs to produce a non-white (e.g., red or amber) output signaling the alarm condition.

Abstract: Power consumed by an LED driver may be reduced by drawing, from an electronic transformer or dimmer, an input current that is constant over a plurality of input voltages. Power derived from the constant input current is provided to the LED driver.

Abstract: A voltage level supplied to power a plurality of LED light fixtures is dynamically adjusted to control the headroom of the voltage level. The current drawn by at least one of the plurality of LED light fixtures is monitored, and the voltage is increased from zero until the monitored current reaches its maximum.

Abstract: In various embodiments, a startup circuit for a low-voltage-lighting electronic transformer includes a low-impedance output circuit. At the beginning of an AC signal cycle, the low-impedance output circuit presents a low-impedance path to the output of the transformer, thereby causing a surge of current in the transformer and initiating oscillation therein.

Abstract: A thermal-foldback system detects an over-temperature condition in an LED lamp. In response to the over-temperature condition, the thermal-foldback system chops a portion of the input power waveform drawn by the LED lamp.

Abstract: A brightness controller determines a lowest dimmer setpoint and an average power to a light source at the lowest dimmer setpoint. An average power supplied to the light source is set based on a setting of the dimmer relative to the average power at the lowest dimmer setpoint.

Abstract: A device for emitting white light includes, in certain embodiments, an ultraviolet and/or a blue LED having an emission surface, a conversion coating spaced away from but enveloping the emission surface to form a first mixing cavity, at least one secondary LED emitting a color different from ultraviolet and blue and spaced away from the conversion coating, and a diffuser spaced away from but enveloping the conversion coating and the secondary LED to define a second mixing cavity that is unfilled.

Abstract: A system for protecting a heat-sensitive component in an LED lamp from overheating. The system including: a heat-generating component, a heat-dissipating component thermally coupled to the heat-generating component, a heat-sensitive component electrically connected to the heat-generating component, and a heat-isolating element for thermally isolating the heat-generating component and the heat-sensitive component.

Abstract: The type of an LED power driver (i.e., a magnetic transformer or an electronic transformer) is determined by manipulating the AC voltage produced by the power driver so that it may be analyzed and the type of power driver reliably determined. In various embodiments, a system for detecting an AC power supply type includes a circuit for monitoring a negative half or a positive half of an output voltage of the AC power supply and an analyzer for determining the AC power supply type based at least in part on a presence or absence of an envelope in the monitored output voltage.

Abstract: A permanent adapter for incandescent lighting fixtures can removably receive LEDs but cannot itself be removed from the fixture.

Abstract: An LED track-lighting system includes an LED for emitting light. A light-transmitting element captures light emitted by the LED light and emits it over at least a portion of the track.

Abstract: A minimum operating point of a dimmer is detected, and power is directed away from an LED when a setting of the dimmer approaches the minimum operating point, thereby extending a range of the dimmer.

Abstract: Operation of an LED as a light source may be temporarily interrupted to facilitate receipt and/or transmission of optical communications, as well as control of the operation of the LED based thereon.

Abstract: Operation of an LED as a light source may be temporarily interrupted to facilitate measurement of the ambient light level, as well as control of the operation of the LED(s) based thereon.

Abstract: Operation of an LED as a light source may be temporarily interrupted to facilitate measurement of the light from other LEDs, as well as control of the operation of the LED(s) based thereon.

Abstract: Total internal reflection (TIR) optics have an engagement member that mates with a complementary feature on the LED holder. The engagement member does not interfere with light propagation through or emission from the optical component, and does not enlarge the footprint area occupied by the optical component.