Abstract: A lighting apparatus comprises the following elements. A first set of light emitting diode module includes a variety of light emitting diode elements, wherein different types of light emitting diode elements have different color temperature characteristics. A driving circuit supplies power to the first set of light emitting diode module, such that the plurality of light emitting diode elements emit light. Moreover, the driving circuit may supply currents with different total values, and the optical characteristics of the first set of light emitting diode module change accordingly, so as to change color temperatures.

Abstract: The subject matter of the invention is a light assembly which comprises means for emitting and means for focusing one or more light beams for the lighting or the signaling of a vehicle. It also comprises a mask which extends below the focusing means. This mask has at least a first surface that can be seen by any person passing close to the vehicle and at least a second surface opposite the first surface. The mask is made from a dark diffusing material and a reflective material coating is deposited on part of the second surface while leaving a portion of this second surface free of reflective coating. Additional light-emitting means are placed opposite the second surface, such that the light rays emitted by the additional light-emitting means can pass through the mask via the portion free of reflective coating.

Abstract: There is provided a photoelectric switch capable of accurately detecting even such a workpiece where a tint changes within the same workpiece, while preventing erroneous detection. The photoelectric switch includes: a light projecting unit; a light receiving unit; a coincidence degree calculating unit for comparing the acquired color information with a reference color to calculate a coincidence degree of both of the color information. When the color information is newly acquired, a detection signal generating unit compares, with a detection determination threshold, the highest coincidence degree of coincidence degrees calculated by respectively comparing the color information newly acquired, with the two or more reference colors, to perform workpiece determination.

Abstract: Method of controlling light output (44) of a luminaire (40) using a control terminal (30), wherein the luminaire comprises at least one light source (46) and a control unit (42), the control terminal comprising a display.

Abstract: In a circuit device, a plurality of protection circuits are disposed between a plurality of first power supply connecting terminals and a first input terminal of a load circuit. A switching element of each of the plurality of protection circuits is connected between a first power supply connecting terminal and a first input terminal, and is turned on when a DC power supply is connected with a normal polarity to the first power supply connecting terminal. Each of the plurality of protection circuits a parasitic diode that is connected in parallel to the switching element between a corresponding first power supply connecting terminal and a first input terminal in a direction where a current having a normal polarity is caused to flow. The reset circuit performs periodically a reset operation of temporarily turning off the switching element.

Abstract: To provide a light-emitting device whose amount of light can be adjusted, or the like. The amount of light emitted from the light-emitting device can be adjusted by controlling the magnitude of the constant current pulse by a control signal. Specifically, the light-emitting device includes a constant current supply configured to be supplied with a control signal and a control pulse signal and configured to supply a constant current pulse; a control device configured to supply the control signal; a driver circuit configured to supply the control pulse signal; and a light-emitting panel configured to be supplied with the constant current pulse. The control signal is a signal for controlling the magnitude of the constant current pulse. The light-emitting panel includes a light-emitting element. The current density of the light-emitting element is greater than or equal to 10 mA/cm2 and less than or equal to 1000 mA/cm2.

Abstract: The present disclosure provides lighting control system multi-switch apparatuses and methods. The apparatus includes a lighting control module including at least three electrical terminals. The lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit of a light fixture electrically connected to the lighting control module. The apparatus includes a detector circuit positioned in the lighting control module. The apparatus includes a controller in electrical communication with the detector circuit, the controller specially programmed to cause a call signal to be transmitted to a switch connected to the traveler terminal, the call signal configured to request the switch connected to the traveler terminal transmit a response signal to the controller to identify the switch connected to the traveler terminal.

Abstract: To provide a light-emitting device capable of being used in a wide temperature range. To provide a light-emitting device capable of being used in a low-temperature environment and a high-temperature environment. The light-emitting device includes a light-emitting panel, a secondary battery, a circuit, and a sealing structure. The light-emitting panel includes a light-emitting element. The light-emitting element can emit light with power supplied from the secondary battery. The circuit includes an antenna and can charge the secondary battery wirelessly. The light-emitting panel, the secondary battery, and the circuit are provided in the sealing structure. The sealing structure includes a portion through which light emitted from the light-emitting element passes.

Abstract: A load control device for controlling the intensity of a lighting load, such as a light-emitting diode (LED) light source, may include a power converter circuit operable to receive a rectified AC voltage and to generate a DC bus voltage, a load regulation circuit operable to receive the bus voltage and to control the magnitude of a load current conducted through the lighting load, and a control circuit operatively coupled to the load regulation circuit for pulse width modulating or pulse frequency modulating the load current to control the intensity of the lighting load to a target intensity. The control circuit may control the intensity of the lighting load by pulse width modulating the load current when the target intensity is above a predetermined threshold and control the intensity of the lighting load by pulse frequency modulating the load current when the target intensity is below the predetermined threshold.

Abstract: Certain embodiments described herein are directed to generators that can be used to sustain a plasma in a driven mode and in an oscillation mode and optionally in a hybrid mode. In some embodiments, the generator is configured to switch between the two modes during operation. In certain instances, the plasma may be ignited when the generator is in a driven mode and may be used to analyze samples when the generator is in an oscillation mode or driven mode or hybrid mode.

Abstract: A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.

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: An emergency light system is provided to help an emergency response team in locating an emergency site, the emergency light system comprising an LED light bulb with a wireless connectivity preferably Wi-Fi, and an app installed on a mobile communication device and connected to the LED light bulb via the wireless connectivity. The app allows registering emergency numbers in it. Further, the app is connected to the dialing pad of the mobile communication device to detect dialing of a registered emergency number. When the app detects the dialing of a registered emergency number, it sends signal to the LED light bulb via wireless connection to activate the LED light bulb to light in strobe pattern. The LED light bulb can be deactivated automatically after 45 minutes or manually through App. The emergency light system also provides a battery backup to the LED light bulb.

Abstract: An illumination system and method is provided for readily mapping a plurality of scenes along a dimcurve form a natural show for one or more groups of LED illumination devices. Mapping can be performed using a graphical user interface on a remote controller wirelessly linked to the illumination devices. A keypad is preferably configured for button control of changes to color temperature as a function of brightness along each of the various dimcurves for each of the various groups of illumination devices controlled by a corresponding keypad to allow momentary or persistent override and reprogram of the natural show. Modification to a scene further comprises modifications to scenes before and after the currently modified scene to provide a smoothing dimcurve modification. Global keypad can be used to control multiple zones arranged throughout a structure to switch between a natural show that emulates outdoor sunlight conditions to a panic show when an intruder is detected.

Abstract: According to one aspect, a control system for an LED luminaire includes a dimming control circuit that develops an analog dimming command signal that is variable between zero volts and ten volts to command LED brightness. The control system further includes a modulation circuit coupled to the dimming control circuit. The modulation circuit modifies the analog dimming command signal so as to include digital data for further commanding a parameter of LED operation.

Abstract: In a single lighting device including a large number of light-emitting elements (LEEs), the LEEs are divided into separately powered groups, and different combinations of the groups are fully energized to achieve the desired overall brightness. In some embodiments, the number of LEEs in each group has a binary relationship to the other groups. The resolution of the dimming is the brightness of the smallest group. In one example of five binary weighted groups of LEEs, 32 brightness levels can be achieved while the LEEs in the energized groups are fully ON. Thus, since there is no high frequency switching, there is substantially no power dissipation by the dimming control system, and there is limited noise or EMI created. The dimming control can be easily implemented with a logic circuit controlling a transistor switch for each group.

Abstract: An illumination source for a camera includes one or more LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LEDs, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for driving the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed, the control circuit changing a pulse characteristic to adjust a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output. Some embodiments provide an illumination source including a housing including one or more LEDs and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

Abstract: The present disclosure relates to compact isochronous sector-focused cyclotrons having reduced dimensions and weight compared with state of the art cyclotrons of same energies. In one implementation, a cyclotron may include two pole magnets facing each other in a chamber defined by a yoke having base plates and flux return yokes forming a lateral wall of the chamber. The magnet poles may include between three and eight hill sectors alternating with a same number of valley sectors distributed about a central axis. The lip of the abyssal opening may be positioned at a distance from the corresponding valley peripheral edge. The flux return yoke may have a thickness in the portions facing valley sectors, such that the ratio of the product of the distance times the thickness to the square of the distance of the peripheral edge to the central axis is less than 5%.

Abstract: Methods and circuits for controlling LEDs are disclosed. In one embodiment, a multistage driver for driving a plurality of serially connected LEDs includes a voltage regulator circuit configured to receive a rectified AC voltage, where the voltage regulator circuit includes a depletion device configured to generate a unregulated voltage using the rectified AC voltage, a band gap voltage reference circuit configured to generate a plurality of reference voltages using the unregulated voltage, and a current setting circuit configured to control the plurality of serially connected LEDs using the plurality of reference voltages.

Abstract: Illumination systems, flexible lighting apparatus and/or lighting control methods are described herein. In various embodiments, one or more signals indicative of a shape formed by a flexible substrate (104, 204, 304, 504, 604) of a flexible lighting apparatus (100, 200, 300, 600) may be obtained from a plurality of sensors (110, 210, 310) associated with the flexible lighting apparatus. One or more lengths of the flexible substrate along the one or more axes may be detected based on the one or more signals provided by the plurality of sensors. One or more LEDs (or more generally, light sources) (102, 202, 302, 502) disposed along the one or more axes of the flexible substrate may be energized to emit light having one or more lighting properties selected based on the detected one or more lengths.