Abstract: There is presented a detailed electronic method for simulation of a firefly, other insects, or organisms producing bioluminescence and with light radiation functions similar to a real firefly, other insects, or organisms producing bioluminescence. An illuminated artificial firefly, other insects, or organisms producing bioluminescence can be placed on trees and shrubs in landscape, or at home to produce radiation, at night time, and blinking a gradually decaying light. More particularly it relates to a decorative type of device in the form of a firefly, other insects, or organisms producing bioluminescence and with light radiation functions similar to a real firefly, other insects, or organisms producing bioluminescence. The light is simulated by an electronics program that is a part of compact device with the form of a real firefly, other insects, or organisms producing bioluminescence.

Abstract: An LED package containing integrated circuitry for matching a power source voltage to the LED operating voltage, LEDs containing such integrated circuitry, systems containing such packages, and methods for matching the source and operating voltages are described. The integrated circuitry typically contains a power converter and a constant current circuit. The LED package may also contain other active or passive components such as pin-outs for integrated or external components, a transformer and rectifier, or a rectifier circuit. External components can include control systems for regulating the LED current level or the properties of light emitted by the LED. Integrating the power supply and current control components into the LED can provide for fabrication of relatively small LEDs using fewer and less device-specific components.

Abstract: To provide a light emitting device without nonuniformity of luminance, a correcting circuit for correcting a video signal supplied to each pixel to a light emitting device. The correcting circuit is stored with data of a dispersion of a characteristic of a driving TFT among pixels and data of a change over time of luminance of a light emitting element. Further, by correcting a video signal inputted to the light emitting device in conformity with a characteristic of the driving TFT of each pixel and a degree of a deterioration of the light emitting element based on the over-described two data, nonuniformity of luminance caused by a deterioration of an electroluminescent layer and nonuniformity of luminance caused by dispersion of a characteristic of the driving TFT are restrained.

Abstract: A solid state lighting apparatus includes a first plurality of light emitting devices configured to emit light when energized having a first chromaticity, a second plurality of light emitting devices configured to emit light when energized having a second chromaticity, different from the first chromaticity, and a controller configured to control a duty cycle of current supplied to the first plurality of light emitting devices. The controller is configured to control the duty cycle of the first plurality of light emitting devices in response to a change in a plurality of operating conditions of the solid state lighting apparatus in accordance with a model of the duty cycle that relates the duty cycle of the first plurality of light emitting devices to the plurality of operating conditions of the solid state lighting apparatus for a target light output characteristic of the solid state lighting apparatus. Related methods are also disclosed.

Abstract: The present disclosure provides a lighting apparatus using a light-emitting diode (LED), which includes: LEDs; a power transfer substrate with the LEDs thereon; a radiating member radiating heat generated in the LEDs; a driver electrically connected to the power transfer substrate and integrally coupled to the power transfer substrate and the radiating member; and a heat insulation layer reducing the amount of heat transferred from the radiating member to the driver. In addition, the present disclosure provides a lighting apparatus using an LED, which further includes a cradle fixed to a given object and detachably fixing a lighting body in which a power transfer substrate with LEDs thereon, a radiating member and a driver have been integrally coupled.

Abstract: A controller for controlling an LED assembly is described. The controller is arranged to—receive an input signal representing a required characteristic of the LED assembly,—convert the input signal to a control signal for the LED assembly,—apply a correction to the control signal to obtain a corrected control signal, the correction being based on a predetermined transient characteristic of the LED assembly,—output the corrected control signal. As such, a better correspondence between a required characteristic and an actual characteristic of the LED assembly is obtained.

Abstract: A plasma processing device includes a first electrode plate (3), a second electrode plate (4), a matching device (8), a power distribution device (9) and a power supply device (1). The first electrode plate (3) includes at least two sub-electrode plates (31, 32) insulated from each other; the power supply device (1) is connected to the power distribution device (9) via the matching device (8); the power distribution device (9) is connected to the first electrode plate (3) for inputting and distributing the power of the power supply device (1) to each of the sub-electrode plates (31, 32); the power distribution device (9) at least includes capacitors (C1, C2) and/or inductances (L1, L2).

Abstract: The invention provides an active matrix EL display device which can perform a clear multi-gray scale color display. In particular, the invention provides a large active matrix EL display device at low cost by a manufacturing method which can selectively form a pattern. Power supply lines in a pixel portion are arranged in matrix by the manufacturing method which can selectively form a pattern. Further, capacitance between wirings is reduced by providing a longer distance between adjacent wirings by the manufacturing method which can selectively form a pattern.

Abstract: A control system for vehicle headlights includes a navigation device and a control unit which controls the illumination characteristics of the headlights depending on geographic location information received by the navigation device. The illumination characteristics are adapted in compliance with predefined illumination settings if the acquired geographic location information shows that the vehicle headlights are being operated on public roads. The illumination characteristics are adapted with further consideration of illumination settings specified by the driver if the location information shows that the vehicle headlights are being operated on non-public roads.

Abstract: A lighting system including fixture lamps, e.g., ceiling mounted, and movable light sources, e.g., task lamps. The task lamps include illuminance sensors arranged to detect ambient light including light emitted by one or more fixture lamps and available daylight. Control data is generated based at least in part on the illuminance data. The resulting control data is transmitted from the task lamp to a fixture lamp and a window system so that it can be used to control the amount of light emitted by the fixture lamp and amount of daylight transmitted through the window system. This arrangement allows daylight harvesting while ensuring that the amount of light provided to workspaces (at which task lamps are located) is satisfactory.

Abstract: The present invention relates to a semi-automatic method of replacing a ballast within a lighting control system, such that the new replacement ballast can operate in the same manner as the ballast that was replaced. If multiple ballasts in a lighting control system are removed from the system and multiple new ballasts are installed to replace those ballasts, any operational configurations such as group configurations or area information associated with each removed (missing) ballast must be assigned to the proper new replacement ballast. The semi-automatic replacement method relies upon the operational configurations of the removed ballast to help a user identify which new ballast should replace each missing ballast.

Abstract: Exemplary apparatus and associated methods involve a bypass module for modulating conductivity of one or more current paths to provide a first set of LEDs that are conducting near minimum output illumination and having a larger conduction angle than that of a second set of LEDs that conduct at a maximum output illumination. In an illustrative example, the conductivity of a bypass path in parallel with a portion of the second set of LEDs may be reduced while the AC input excitation is above a predetermined threshold voltage or current. The bypass path may be operated to provide a reduced effective turn-on voltage while the input excitation is below the predetermined threshold. For a given maximum output illumination at a maximum input excitation, the bypass module may control current through selected LEDs to construct an input current waveform with substantially improved power factor and reduced harmonic distortion.

Abstract: A modular light emitting apparatus includes a light emitting device, a connector to couple to an AC power source, circuitry on a first electronics module to drive the light emitting device, and a support structure arranged to position and hold a second electronics module that conforms to a predetermined form factor.

Abstract: A light source includes a hot electron source comprising a cathode that generates an electron beam and an anode comprising a germanium containing material positioned adjacent to the cathode. The anode is biased so that the electron beam accelerates towards the anode where some electrons are absorbed and then relax to both direct energy bands and indirect energy bands causing stimulation of low energy electrons from the indirect energy band to the direct energy band, thereby creating electroluminescence.

Abstract: A vehicular lamp has a light source unit having an LED and an optical element that performs light distribution control for directing light from the LED in a predetermined direction, a heat sink to which the light source unit is attached, and a lamp chamber in which the light source unit is disposed. The LED is an LED module formed by installing an LED chip on a power supply circuit board. The LED module is installed on a circuit board installation portion of the heat sink, and an attachment, which has a frame shape a size larger than the LED module and has a circuit board retaining portion at a center open portion of the attachment, is attached and fixed to the heat sink by a fixing member, whereby the LED module is held between the attachment and the circuit board installation portion.

Abstract: A light-emitting device, electrically connected to an external variable voltage source, includes a plurality of light-emitting modules sequentially electrically connected in series and electrically connected to the external variable voltage source. Each light-emitting module has at least one light-emitting unit, a first connection terminal and a second connection terminal. At least one of the light-emitting modules has a control unit and a bypass unit electrically connected to the light-emitting unit. The second connection terminal of the light-emitting module having the bypass unit and the control unit is electrically connected to the first connection terminal of the other light-emitting module and serves as a detection terminal. The control unit detects a voltage of the detection terminal and accordingly controls the bypass unit to adjust a current flowing through the light-emitting unit.

Abstract: A feeding body 106 has a cylindrical part capable of housing a light source cartridge 104. A feeding coil L2 for supplying AC power to the light source cartridge 104 is buried in the bottom surface of the cylindrical part of the feeding body 106. A power transmission control circuit 108 supplies AC power to the feeding coil L2. The feeding body 106 can change the insertion depth of the light source cartridge 104 and has, in the inner wall, a screw groove for stabilizing the position of the light source cartridge.

Abstract: A light emitting device includes: a plurality of light emitting elements configured to emit light when a direct current is supplied thereto; and a direct current power supply circuit configured to supply an electric current of a given level or more to the light emitting elements. The light emitting device further includes: a light emitting element voltage detection circuit configured to detect a voltage applied to the light emitting elements; and a forward/reverse inverting circuit configured, when the light emitting element voltage detection circuit detects an abnormality in a light emitting element, to apply a reverse voltage to the light emitting element in which the abnormality is detected.

Abstract: An OLED display with a current stabilizing device employs a current stabilizing device which is coupled between the driving-voltage line of the data driver and the data-power-supply wires to produce an output voltage higher than the driving voltage by boosting the driving voltage of the data driver, and then to maintain the current of the OLEDs at a constant level by performing current limiting, so that the problem of the current-ununiformity caused uneven luminance of the conventional OLED display can be solved, and the possibility that the luminance of the OLED panel will decay in a short period of time is reduce.

Abstract: A power supply device for driving a light emitting diode (LED) capable of controlling the switching of multiple output powers, in synchronization with the frequency of one of the multiple output powers and simplifying a power conversion stage in supplying power for driving an LED.