Abstract: The invention provides a lighting system (100) comprising a first lighting element (10) and a control unit (50), wherein: a) the first lighting element (10) is configured to provide first lighting element light (11) with controllable lighting intensity, wherein the first lighting intensity can be selected from a plurality of values in the range of 0-I, with I being a predetermined first lighting element maximum intensity; b) the control unit (50) is configured to maintain a first lighting element intensity, during a first predetermined period at an intensity value larger than zero when a general lighting intensity is below a predetermined first threshold level; c) the control unit (50) is further configured to maintain the first lighting element intensity during a second predetermined period at an intensity value a*y*I when the general lighting intensity level is y*I, y being the factor the general lighting intensity is below I, with 0<y<1, the parameter a being a predetermined lighting setting with 0&l

Abstract: A lighting control console for controlling a lighting system includes digital adjusting commands being generated in the lighting control console that are transmitted to the lighting system via data links. The lighting control console includes at least one slide control for inputting operating commands via linear displacement of a control knob protruding from the upper side of the console housing. The upper side of the console housing includes a slit for each slide control. The control knob is connected to the slide control via the slit. A tactile sensor system provided at the slide control can detect when the user touches the control knob.

Abstract: A lighting control console for controlling a lighting system, wherein digital adjusting commands are generated in the lighting control console that can be transmitted to the lighting system via data links. At least one dual encoder is provided in the control panel of the lighting control console which allows users to enter input values. The dual encoder includes a first shaft and a second shaft rotatably mounted in a housing, first and second locking mechanisms for locking different rotational positions of the first and second shafts, and at least one first and at least one second rotation signal generator for generating a data signal showing a switchover between two locking positions. Both shafts include actuating elements at which adjusting movements can be transmitted onto the shafts by hand.

Abstract: A control circuit for a voltage converter has a switch which has a multiplicity of parallel-connected current-conducting branches with resistors with different resistance values, and a contact maker. The contact maker is configured to connect selectively in each case one of the multiplicity of parallel-connected current-conducting branches to an input contact of the switch. The control circuit also includes a detector circuit which is configured to determine a voltage drop across the resistors and to output, as a function of the determined voltage drop, an actuation signal for setting a setpoint output current of the voltage converter to the voltage converter.

Abstract: A board-mounted parallel circuit structure with efficient power utilization includes a first substrate, a first constant voltage layer and a second constant voltage layer. The first and second constant voltage layers are connected to a power supply respectively through two power connection points. The first constant voltage layer has at least one insulating zone. Each insulating zone has a light-emitting unit formed therein. One electrode of the light-emitting unit is connected to the first constant voltage layer, and the other electrode thereof is connected to the second constant voltage layer through a conducting wire. When the power supply outputs a low voltage to the first constant voltage layer, resistance values everywhere on the first constant voltage layer are identical. Accordingly, given any distance between a light-emitting unit and a corresponding power connection point, lighting efficiency of the light-emitting unit is not affected and effective power utilization can be ensured.

Abstract: Aspects are provided for controlling outdoor lighting systems using a photocontrol interface that can be connected to a motion sensor and a luminaire driver or ballast. In some aspects, a dimming control node is electrically and communicatively coupled to a motion sensor via wired connections to a photocontrol interface. The dimming control node is also communicatively coupled to a luminaire ballast or driver. The dimming control node can provide power to the motion sensor. The dimming control node can also receive sensor data from the motion sensor via one of the wired connections. The dimming control node can determine a sensor output state of the motion sensor from the received sensor data, and can select a dim-level configuration corresponding to the determined sensor output state. The dimming control node can cause the luminaire ballast or driver to implement the selected dim-level configuration.

Abstract: An illuminating device for vehicles which has at least one LED branch (Z1, Z2) with at least one LED (DL11 . . . DL1n, DL21 . . . DL2n), and with a controlled LED power supply (1) and a drive (3) which provides dimming signals (SDA1, SDA2; SDD1, SDD2) for the LEDs, wherein an electronic switch (TS1, TS2) is associated to the at least one LED branch (Z1, Z2) and is supplied with a PWM dimming signal (SDD1, SDD2), and the at least one LED branch is bridged for the purpose of branching off a partial current (IN1, IN2) from a controlled auxiliary circuit (N1, N2) having a current controller with an analog controller (21, TN1, 22, TN2) which is supplied with an analog dimming signal (SDA1, SDA2).

Abstract: LED lamp systems having improved light quality are disclosed. The lamps emit more than 500 lm and more than 2% of the power in the spectral power distribution is emitted within a wavelength range from about 390 nm to about 430 nm.

Abstract: An LED lamp arrangement adapted for fitting in a luminaire. The luminaire is adapted for a fluorescent lamp and having a ballast. The LED lamp arrangement has a plurality of LEDs, and two or more electrodes for releasably connecting to the luminaire and for conducting current from the ballast for supply to the LEDs. The LED lamp arrangement further has a sensor circuit and a protection circuit. The sensor circuit and the protection circuit are adapted to increase the total load impedance of the LED lamp arrangement if the ballast is a constant power electronic ballast.

Abstract: A lighting device provides a lighting unit for emitting useful light and a sensor. The unit includes a laser diode for emitting pump radiation and a phosphor element, which during operation is irradiated by the laser diode and thereby excited and serves for converting the pump radiation into conversion light, which conversion light at least proportionally forms the useful light. The sensor monitors the pump radiation conversion and at the same time detects a conversion light intensity, and is arranged with respect to the phosphor element of the unit so that a portion of the useful light and a measurement portion of the conversion light is incident on the sensor. The lighting device operates so that the phosphor element at least at times is irradiated in a pulsed manner and thereby excited so that between two pulses the conversion light intensity detected by the sensor decreases by at least 10%.

Abstract: A solid-state lighting system includes a light-emitting device connected in series with a variable dim setting resistor, an adjustable regulator, and a current sensor disposed in a feedback loop between an adjust input of the adjustable regulator and the variable dim setting resistor. The voltage dropped across the variable dim setting resistor is forced to remain constant irrespective of the resistance setting of the dim setting resistor. The current sensor measures or senses the current flowing through the variable dim setting resistor and causes the adjustable regulator to adjust its output voltage and the forward voltage drop across the light-emitting device so that the current flowing through the light-emitting device matches the current set by the variable dim setting resistor. Controlling the current in this manner allows dimming to be performed over an extremely wide dimming range, to very low light levels, and without producing light flicker at any dim level.

Abstract: An LED lifestyle lighting solution using microcontroller technology to control LED load for managing nighttime illumination is disclosed, wherein the nighttime illumination is divided into a first stage being a high power illumination for a preset time period and a second stage being an energy saving/security illumination. The time period of the first stage high power illumination is managed by a virtual timer which is programmable and dynamically variable according to a user's living habits and needs. The second stage energy saving illumination having four options is produced by adequate combinations of LED load dimming and motion sensor operation. The LED characterized by a limited working voltage range, namely, Vth<V<Vmax, makes the LED lifestyle lighting technology completely different from the technology of conventional lighting sources. The present invention provides possibility to choose among different working modes integrated in a single LED lighting device.

Abstract: A method includes retrieving a current lighting state of at least one luminaire. The lighting state includes light intensity of the at least one luminaire. The method also includes retrieving a sensor state of at least one sensor and determining a next selectable lighting state available for the at least one luminaire and an illumination adjustment for a user interface element of a lighting control device configured to control the luminaire. The determining of the next selectable lighting state available includes comparing the current lighting state and the sensor state to a set of intelligent backlighting rules, and based on the comparison, determining an indicator state corresponding to the illumination adjustment to the user interface element of the lighting control device. The illumination adjustment produces visible output to the user via the user interface element as a visible cue to guide the user to select the next lighting state.

Abstract: A light emitting apparatus having a housing including a portion defining a thermally conductive outer surface, a light source positioned within the housing, and an internal heat sink thermally coupling the light source and the thermally conductive outer surface portion of the housing. The light source may be a solid state device, such as a light emitting diode.

Abstract: The present invention refers to an Electrical Power System (EPS) or Power Supply for a smart switch for controlling up to three independent lighting loads (3 gang) within an electrical installation that has two or three wires in the switch box (two-wire and three-wire switches). The smart switch is able to operate in a conventional switch box without access to the neutral wire. If the lighting device is a low power lighting device, only one adapter is used to avoid flickering or unintentional lighting. The Power Supply also provides a voltage signal indicating the current consumed by the lighting loads.

Abstract: A light set circuit having first, second, and third control signal lines arranged in parallel, with pairs of LEDs connected with reverse polarity between pairs of the signal lines. In operation, control apparatus applies a control signal level between one and either of the other signal lines, the remaining control signal line being kept in a floating state for activating a selected one of the four LEDs. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively, there being three pairs of LEDs connected with reverse polarity between pairs of the signal lines for activating a selected one of the six LEDs by applying a control signal level between two of the signal lines, keeping the remaining signal line in a floating state.

Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.

Abstract: Apparatus and associated methods relate to a curtain configured decorative lighting system. The curtain configuration of decorative light stings is obtained by using light-string distribution elements, each of which receives an input signal by a conductive lead. The input signal is indicative of a plurality of lighting commands. The light-string distribution element then provides an output signal to a tap connector, to which a decorative light string can be connected. The provided output signal is indicative of lighting commands corresponding to a plurality of lighting elements distributed along the decorative light string connected thereto. The plurality of lighting elements of the attached decorative light string each illuminate in response to one of the lighting commands indicated by the output signal. In some embodiments, the decorative light string provides to the tap connector a signal indicative of lighting commands that do not correspond to lighting elements of that decorative light string.

Abstract: A lighting apparatus includes at least one light emitting diode (LED) and a passive resonant converter circuit having an output coupled to the at least one LED and an input configured to be coupled to a ballast that produces an AC output. The passive resonant converter circuit may include a combination of a passive rectifier circuit, such as a passive diode bridge, and a resonant circuit, such as a CL resonant circuit. An input of the passive rectifier circuit may be configured to be coupled to the ballast and the resonant circuit and the at least one LED may be coupled to an output of the passive rectifier circuit. At least a portion of the passive resonant converter may be packaged with the at least one LED in a lamp and all or a portion of the passive resonant converter circuit may be packaged as a module or other unit for use with a lamp.

Abstract: A luminaire can include a power supply that receives AC mains power from a power source and delivers intermediate power, and can also include a lumen control module coupled to the power supply, where the lumen control module receives the intermediate power from the power source. The lumen control module can include at least one first switch that has multiple positions, and multiple resistors coupled to the at least one first switch, where each position of the at least one first switch corresponds to a resistance of the resistors, where the intermediate power received by the resistors is translated to a current level of a plurality of current levels based on the resistance. The luminaire can also include at least one light source coupled to the lumen control module, where the at least one light source emits a lumen output based on the current level received from the lumen control module.