Abstract: A light bulb includes: a light-emitting module; a heat-dissipation carrier including a first surface and a second surface opposite to the first surface, disposed under the light-emitting module for conducting heat generated by the light-emitting module away from the light-emitting module; and a heat radiator disposed above the heat-dissipation carrier for radiating heat away from the heat-dissipation carrier.

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof and including a first side, a second side opposite the first side, a central bore extending between the first and second sides and adapted to receive a light emitting diode, and extraction features on the second side. A light diverter extends into the central bore for diverting light into and generally along the width of the body of material. The extraction features direct light out of the first side and wherein at least one extraction feature has an extraction surface dimension transverse to the thickness that is between about 5% and about 75% the overall thickness of the body of material.

Abstract: A light includes a central tube having heat sink fins coupled to the tube, a light emitting diode package thermally coupled within the central tube and located a selected distance from a first end of the tube, an electronics module coupled to a second end of the tube and electrically connected through the tube to the light emitting diode package, an Edison connector coupled to the electronics module, and a lens optically coupled to the light emitting diode package, wherein the lens extends through the tube from an end proximate the light emitting diode package to beyond the first end of the tube to disperse light in a selected pattern.

Abstract: A lighting device including: a light emitting module; a heat sink which is disposed on the light emitting module; a heat sink fan which is disposed over the heat sink; an upper case which covers the heat sink fan and the heat sink; and a lower case which is coupled to the upper case and fixes the light emitting module. A first air inlet is disposed in the lower case. A second air inlet is disposed in the upper case.

Abstract: A light emitting diode (LED) illuminating device includes a base, an LED substrate mounted on the base, at least one LED arranged on the LED substrate and an envelope. The envelope includes an open end fixed on the base, a top end opposite to the open end, and a reflection portion protruding from an inner surface of the top end and extending toward the LED substrate. A reflection layer is arranged on the reflection portion, light beams emitted by the at least one LED pass through the envelope to spread out.

Abstract: A beam generating device emitting a first beam and a second beam and including a luminescence unit and a first reflecting unit is disclosed. The luminescence unit emits a main beam. The first reflecting unit reflects the main beam to generate a first reflected beam. The main beam forms the first beam and the first reflected beam forms the second beam.

Abstract: A light-guiding cover includes a light input surface defining a central axis and a light output surface. The light-guiding cover has a reflecting portion formed therein and substantially symmetrical about the central axis. The reflecting portion surrounding the central axis has an outer reflecting surface and an inner reflecting surface. The light input surface is defined into two regions, an inner region and an outer region, by the reflecting portion. The outer reflecting surface of the reflecting portion is arranged away from the central axis, the inner reflecting surface of the reflecting portion is arranged near to the central axis. Thus, the light-guiding cover of the instant disclosure can guide the light beams emanated from a LED to travel in certain optical paths and provide uniformly distributed lighting. Moreover, the instant disclosure also provides an illumination device having the light-guiding cover that can omni-directionally illuminate.

Abstract: An illumination device, includes a printed circuit board, a plurality of LED light sources mounted on the printed circuit board, a hollow supporting post covering the plurality of LED light sources, a reflective cup located above the supporting post, a first lens received in a bottom portion of the reflective cup and a second lens located at a top portion of the reflective cup. The supporting post is connected to the printed circuit board, and the first lens is connected to the supporting post. The reflective cup includes a bottom portion adjacent to the LED light sources and a top portion remote from the LED light sources. The printed circuit board, the reflective cup, the first lens and the second lens are combined as a whole by the supporting post.

Abstract: Provided is an optical sheet, the optical sheet comprising: a base film; and a plurality of constructions which are irregularly arranged on one surface of the base film so that an arrangement axis of one construction is out of an arrangement axis of another construction adjacent to one side surface of the base film within a range of 1 to 50% of a length or a width of the another construction. Thus, a protective film and a prism type sheet are removed, and the weakness and workability of processes are improved, thereby being capable of reducing a unit price. Furthermore, a shielding force which is the most weakness of the prism type sheet can be improved.

Abstract: Example embodiments of the disclosed technology include systems, methods, and/or apparatus for modifying light. In example implementations, a light modifying element or assembly of light modifying elements is provided and is configured to modify light from a light source. The light modifying elements can include various configurations and assemblies disclosed herein, which may comprise V-shaped, curved, or truncated-pyramid shaped light modifying elements, wherein one or more optical film pieces are characterized by one or more edge trusses disposed at two or more opposing edges of at least one of the one or more optical film pieces. The one or more edge trusses are characterized by one or more folds of at least a portion of at least one of the one or more optical film pieces. Edge trusses are further characterized to support two or more opposing optical film edges in a substantially planar configuration.

Abstract: Disclosed is a bay lamp with a cooling plate. The bay lamp includes a metal lampholder and at least one cooling plate. Each cooling plate includes a vertical plate extended from the metal lampholder, a transverse plate bent and extended from the vertical plate, and a spacing formed between the transverse plate and the metal lampholder. The cooling plate is integrally formed with the metal lampholder and extended from the metal lampholder to substitute a conventional fin, so as to reduce the cost and weight of the bay lamp.

Abstract: A heat exchange system for an LED light fixture is provided. The heat exchange system includes an enclosure 4, a heat sink 9 positioned inside of and spaced apart from said enclosure 4, and a fan positioned inside of and spaced part from said enclosure 4. Heat is first transferred from LEDs 1 to heat sink 9. Heat is then transferred from heat sink 9 to the air within said enclosure 4 aided by fan 10. Heat is then transferred from the air inside of enclosure 4 to said enclosure 4 and then to outside ambient air. The enclosure 4 may be open (unsealed) or closed (sealed from a surrounding environment). The heat exchange system may be constructed from relatively simple and inexpensive components.

Abstract: An intermediate device structure/system is provided. The system includes a base member and a coupler, the coupler arm being coupled to the base member and extending therefrom. The system further includes a housing configured to functionally engage the base member, the housing defining therein a cavity therein for housing electrical components of the system, including a control unit and other auxiliary devices. The base member may be coupled to a mast arm of an illumination pole and the coupler arm may be coupled to a luminaire of the illumination pole, such that the intermediate device system is configured in line between the mast arm and the luminaire. The control unit is electrically coupled to the electrical power of an illumination pole and powers the data and power connectivity between devices belonging to the intermediate device system.

Abstract: A method to control a headlight of a vehicle having a dipping control system is provided. The dipping control system includes a position detector, a map, a luminous intensity measuring device, and a controller. The method recalls the information associated with a work site and, determines a position and a direction of travel of the vehicle. Further, a position and a direction of travel of an approaching vehicle is determined and as a result the headlight of the vehicle is set in a high beam state or a low beam state. The switching of the headlight is based on work site information, whether the vehicle is approaching the other vehicle, and the vehicle and the approaching vehicle are on a trajectory of substantial intersection.

Abstract: A canopy apparatus for a kayak comprises a bracket configured to be mounted to a kayak deck and a canopy. The canopy has a base member adapted to engage the bracket to releasably secure the canopy to the kayak deck and a cover pivotally connected to the base member. The cover is selectively movable between collapsed and expanded positions. The forward edge of the cover may further be adapted to carry a plurality of lights, preferably LEDs.

Abstract: A portable solar light tower includes a trailer mounted extension tower outfitted with high output Light Emitting Diode (LED) flood lights. The portable solar light tower also includes a set of solar panels which fold up for travel mode and fold down for charging mode. A battery bank is housed in a locking compartment built into the trailer deck.

Abstract: A fog lamp for use in an automobile includes a plurality of reflectors each sharing a common focus point, a light emitting diode array positioned at the common focus point, and a circular, non-optic window. The window fits through a standard-sized opening in an automobile fascia substantially two inches in diameter. The reflectors include a central reflector, a pair of lateral reflectors surrounding the central reflector and angled toward a center axis of the fog lamp, and a pair of converging reflectors surrounding the lateral reflectors and angled more sharply toward the center axis of the fog lamp. The central reflector and lateral reflectors produce beams of reflected light through the outer circumference of the window. The converging reflectors produce beams of reflected light converging at a secondary focus point within the fog lamp and transmitting through the window.

Abstract: A single-substrate mirror element defined by a transflective metal layer—non-metal layer—metal layer coating disposed on the first surface of the substrate and enabled to meet the requirements of operation in an exterior rearview assembly and to provide for stealthy appearance of a light source of the assembly disposed behind the mirror element. The appearance of the mirror element, defined in parameters of the CIELAB color system, is substantially color-neutral, while tuning of reflectance and transmittance characteristics can be achieved substantially independently from one another. Reflectance value and measure of color content of light specularly reflected by the mirror at non-zero angles remains substantially stable within wide range of angles.

Abstract: A vehicle lighting unit includes LEDs mounted on a substrate, and an elongated inner lens configured to receive light from the LEDs and guide the light along its lengthwise direction so as to emit light from its front surface. The inner lens includes a first light guiding section extending in the left-to-right direction and a second light guiding section extending in the vertical direction, and a bending section between the first and second light guiding sections. The bending section includes a first reflection surface and a second reflection surface. The first and second reflection surfaces internally reflect light toward the first and second light guiding sections, respectively. The LEDs include a first LED and a second LED, disposed in the rear of the first reflection surface and the second reflection surface, respectively.

Abstract: An exterior mirror for a motor vehicle that has a filling funnel for filling at least one liquid container arranged in the motor vehicle. The exterior mirror may have an optical fluid level display. The exterior mirror also includes a flap that is opened to provide access to the filling funnel. The flap may comprise a portion of the outer surface of a housing portion of the exterior mirror.

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof. The body of material has a first side, a second side opposite the first side, and a plurality of interior bores extending between the first and second sides each adapted to receive a light emitting diode. Extraction features are disposed on the second side and the extraction features direct light out of at least the first side and at least one extraction feature forms a taper disposed at an outer portion of the body.

Abstract: A dropped-ceiling lighting system having a reflector positioned in an opening in a grid used to suspend a dropped ceiling, a lighting device including a light source mounted adjacent to the reflector, a structural support securing the lighting device to the grid, and a power source for the lighting device. Also discloses is a dropped-ceiling lighting system comprised of a reflector attached to a plenum barrier positioned in an opening in a grid used to suspend a dropped ceiling, a power source extends from a first edge of the plenum barrier to a second edge of the plenum barrier, and a light source is mounted to the power source.

Abstract: An optical waveguide includes a body of optically transmissive material defined by outer edges and having a width substantially greater than an overall thickness thereof. The body of optically transmissive material includes a first side and a second side opposite the first side. An interior coupling cavity is defined by a surface intersecting the second side and extends from the second side toward the first side. The interior coupling cavity is disposed remote from edges of the body and is configured to receive an LED element. The body of optically transmissive material further includes a first array of light mixing cavities surrounding the interior coupling cavity and an extraction feature disposed on one of the first and second sides. The light extraction feature at least partially surrounds the interior coupling cavity.

Abstract: The invention relates to an interior trim component for a motor vehicle, which comprises: a carrier component, which determines the contour of the interior trim component, a cover layer, which is applied to a front side of the carrier component, and a light-emitting layer, which is applied to a back side of the carrier component, wherein the carrier component and the cover layer are transparent.

Abstract: An artificial flame device is disclosed. There is an enclosure defining a lamp opening. A base stator assembly includes a base with a selectively activatable electromagnet, a post extending therefrom, and an electroluminescent device with a lens is mounted on the post. An articulation assembly is suspended from the base stator assembly. The articulation assembly has a lamp optic with a bearing coupled to the lens of the electroluminescent device. There is at least one extension defining a magnetic distal end that interacts with the electromagnet of the base in response to a selective activation thereof that induces rotation and movement of the articulation assembly within a predefined conical volume. The lamp optic protrudes from the lamp opening of the enclosure and diffuses light from the electroluminescent device passed thereto.

Abstract: A semiconductor light emitting device package is provided, including a body, first and second reflective cups disposed under a top surface of the body and spaced apart, a first connection pad disposed under the top surface of the body and spaced apart from the first and second reflective cups, a second connection pad disposed under the top surface of the body and spaced apart from the first and second reflective cups and the first connection pad, a first semiconductor light emitting device disposed within the first reflective cup, and a second semiconductor light emitting device disposed within the second reflective cup.

Abstract: A backlight module includes a light guide plate and a number of light sources. The light guide plate includes a frosted light incident surface, diffusion structures positioned on the frosted light incident surface, and dot-shaped micro-recesses positioned on the diffusion structures. The light sources face the frosted light incident surface.

Abstract: According to one aspect, a waveguide includes a waveguide body having a coupling cavity extending therethrough and a plug member having a first portion disposed in the coupling cavity. The plug member includes an outer surface substantially conforming to the coupling cavity and a second portion extending from the first portion into the coupling cavity and a reflective surface adapted to direct light in the coupling cavity into the waveguide body.

Abstract: According to one aspect, a waveguide includes a body exhibiting a total internal reflectance characteristic and having a first face and a second face opposite the first face wherein the first and second faces extend along a lateral direction and a coupling cavity adapted to receive a light emitting diode (LED) that is configured to direct light into the body. The body additionally includes an extraction feature disposed on one of the first and second faces and configured to direct light traveling through the body out of at least one of the first and second faces. The body further includes a redirection feature disposed at least in part between the first and second faces and disposed between the coupling cavity and the extraction feature along the lateral direction, and configured to redirect light traveling through the body laterally within the body.

Abstract: An optical waveguide assembly includes a plurality of separate body sections each having a coupling cavity for receiving an LED element and a light extraction feature spaced from the coupling cavity, and a mounting structure surrounding the plurality of body sections that maintains the plurality of body sections in assembled relationship. The waveguide assembly may be incorporated into a light engine.

Abstract: An electronic device may have a liquid crystal display with backlight structures. The backlight structures may produce backlight that passes through the display layers in the display. The display layers may include a layer of liquid crystal material interposed between a color filter layer and a thin-film transistor layer. The backlight structures may include a light guide plate. A plurality of light-emitting diodes mounted on a flexible printed circuit may be coupled to an edge of the light guide plate. The flexible printed circuit may be curled into a spring element to bias the light-emitting diodes against the edge of the light guide plate. A plurality of gaps may be formed in the flexible printed circuit and may be used to separate and mechanically decouple adjacent light-emitting diodes. Individual light-emitting diodes may independently register to the light guide plate to maximize optical efficiency in the display.

Abstract: In an illumination device of the invention, as an arrangement interval of light deflection elements in a first direction discontinuously varies, an arrangement interval in a first direction becomes small with increased distance from an incidence face, where one of regions adjacent to each other which is close to the incidence face is referred to as a first region, the other of the regions which is away from the incidence face is referred to as a second region, as the arrangement interval of the light deflection elements in a second direction discontinuously varies at a boundary between the first region and the second region, the arrangement interval of part of the first region which is closest to the incidence face is smaller than the arrangement interval of part of the second region which is closest to the boundary.

Abstract: An electronic device is provided. The electronic device includes a cover window, a cover frame, a display module, a backlight module, a light absorbing portion and a light reflecting portion. The cover frame is connected to the cover window, wherein the cover frame is perpendicular to the cover window. The display module is covered by the cover window and the cover frame, wherein the display module faces to the cover window. The backlight module is covered by the cover window and the cover frame, wherein the backlight module faces to the display module. The light absorbing portion is disposed on the cover frame and corresponding to the display module. The light reflecting portion is disposed on the cover frame and corresponding to the backlight module.

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof. The body of material has a first side, a second side opposite the first side, and a plurality of interior bores extending between the first and second sides each adapted to receive a light emitting diode. Extraction features are disposed on the second side and the extraction features direct light out of at least the first side and at least one extraction feature forms a taper disposed at an outer portion of the body.

Abstract: The present disclosure provides a warping buffering structure for a light guide plate and a backlight module. The warping buffering structure includes: a first member with one side thereof contacting one end of the light guide plate of a backlight module; a second member with one side thereof flexibly connected to a side wall of a back cover of the backlight module, and the second member capable of sliding along an extending direction of the side wall; a first inclined surface formed on an end of one side of the first member which is away from the light guide plate; and a second inclined surface formed on an end of one side of the second member which is away from the side wall, and the second inclined surface contacting the first inclined surface and being slidably engaged with the second inclined surface.

Abstract: A method for sensing an output voltage in a voltage converter includes at least one switching element and a transformer. A voltage is sampled across an auxiliary winding or a signal obtained from the voltage across an auxiliary winding in order to obtain a plurality of samples after the at least one switching element has assumed a first operation state and until the auxiliary voltage reaches a predefined threshold. The auxiliary winding is inductively coupled with the transformer. At least one sample obtained is evaluated before the auxiliary voltage reaches the predefined threshold.

Abstract: A device for detecting an average output current of a power converter includes a current generation unit, a first voltage generation unit, a first current mirror unit, and a second current mirror unit. The current generation unit generates a first charge current according to an intermediate voltage. The first voltage generation unit generates a first node voltage according to the first charge current, a first discharge current, a turning-on time, and an inverse turning-on time. The first current mirror unit generates a first current according to the first node voltage, and generates a second voltage corresponding to the average output current of a secondary side of the power converter according to the first current. The second current mirror unit generates the first discharge current according to the first current.

Abstract: A modular power supply is provided. The modular power supply includes multiple inverters and a controller. Each inverter is configured to receive an input voltage and provide an output to a load. The controller is configured to provide a synchronization signal to each inverter of the plurality of inverters.

Abstract: A power supply device includes a transformer, a rectification smoothing circuit having positive and negative output ends that rectifies and smoothes an induced voltage at a secondary winding of the transformer so as to generate a direct current voltage between positive and negative output terminals, a serial connection terminal to which another power supply device is connectable and is connected to the positive output end, the negative output terminal is connected to the negative output end, the reverse flow prevention rectifying device is connected between the positive output end and the positive output terminal, its forward direction faces toward the positive output terminal, and the bypass rectifying device is connected between the positive output end and the negative output end, its forward direction faces toward the positive output end. Therefore, a plurality of power supply devices are easily connected in series without providing external diodes for each power supply device.

Abstract: An AC to DC converter system is disclosed in which a conversion circuit for converting an AC input signal to a DC output signal is operably coupled with an enabling circuit designed for sensing and output parameter indicative of the presence or absence of a load at the DC output. The system is designed so that the conversion circuit operates in an inactive standby state when there is no load, and in an active state for supplying DC power when a load is present. The enabling circuit is configured to operate using low power.

Abstract: A DC-DC converter is configured with a step-down converter that outputs a output voltage having the same voltage value as an input voltage when a step-down operation stops and that outputs the first output voltage having a lower voltage value than the input voltage when the step-down operation is performed, and a resonant converter in which a voltage transfer factor is adjusted by a switching frequency of a switching element through which a resonance current flows. A step-down operation of the step-down converter is performed when the switching frequency, the voltage transfer factor and a target value for the output voltage satisfy a predetermined condition. According to the above configuration, it is possible to decrease switching loss of the step-down converter.

Abstract: An example method of controlling a power supply to have a constant current output includes receiving an input current sense signal, an input voltage sense signal, and an output voltage sense signal. A control signal is then generated to control switching of a switch of the power supply to regulate an output current of the power supply. The generating of the control signal includes integrating the input current sense signal during a switching period of the control signal to generate an integrated signal representative of a charge taken from an input voltage source of the power supply. Generating the control signal also includes controlling the switching of the switch such that the integrated signal is proportional to a ratio of the output voltage sense signal to the input voltage sense signal.

Abstract: Disclosed herein is a switching converter capable of preventing a period in which a switch SW of a primary side is turned on and a period in which a synchronous rectifying switch SR SW of a secondary side is turned on from being overlapped with each other. The switching converter includes: a transformer T inducing primary energy to secondary side; a switch SW connected to a primary coil of the transformer T to switch a primary voltage; a synchronous rectifier SR connected to a secondary coil of the transformer T to rectify a secondary voltage; and a delay locked loop connected between the secondary coil and the synchronous rectifier SR, wherein the delay locked loop generates a signal synchronized with a turn-on control signal of the switch SW and outputs the generated signal to the synchronous rectifier SR to control a turn-off operation of the synchronous rectifier SR.

Abstract: A controller circuit for the control of a power converter is disclosed. An example controller circuit generates a waveform that drives a switch that controls the power converter. The controller circuit includes a divider module that generates a modification factor based on a ratio of the two input signals of the module. The circuit includes a module that generates a first waveform configured for a critical conducting mode of operation of a power converter and an on-time adjuster module that modifies the first waveform based on the modification factor and generates a second waveform. The second waveform is delivered to the switch. An example modification factor is the ratio of the output voltage to the rectified input voltage of the power converter.

Abstract: An exemplary embodiment of a switching controller for a power converter is provided. The switching controller for a power converter comprises: a power device, an input circuit and a compensation capacitor. The power device is coupled to switch a transformer of the power converter for regulating an output voltage and an output current of the power converter. The input circuit is coupled to the transformer to sample an input signal which is correlated to the output voltage of the power converter to obtain a feedback signal. The feedback signal is utilized to generate a switching signal for controlling the power device. The switching signal is modulated to operate the power converter in boundary current mode (BCM) or discontinuous current mode (DCM).

Abstract: A grid-side transformerless power conversion system configured to perform power conversion between a power grid and a load, the transformerless power conversion system includes a first converter, a first filter, and a second converter. The first converter is configured to convert first AC power provided from the power grid into DC power. The first converter includes a first converter module and a second converter module coupled to the first converter module to form a nested neutral point piloted topology. The first filter is coupled between the power grid and the first converter. The second converter is coupled to the first converter. The second converter is configured to convert the DC power into second AC power and provide the second AC power to the load.

Abstract: An embodiment of the invention is a scalable single stage differential power converter. The inverter can be implemented in signal, split and multi-phases. A multiphase converter can be achieved with only three modules. Integrated magnetics used in preferred embodiments of the invention mitigate the DC component of the steady-state dynamics and can be extended to AC ripple mitigation. Control architectures in preferred embodiments can mitigate higher order harmonics in steady state dynamics. Embodiments of the invention also provide scalability for voltage and current source topologies.

Abstract: A power conversion system is disclosed that provides multiphase power, including phase voltages for each phase of the multiphase power. The system comprises a plurality of inverters that generate PWM output voltages based on PWM control signals. A plurality of inductive components is configured to receive the PWM output voltages to generate the phase voltages. The PWM output voltages cause circulating current flows through the inductive components. A voltage controller is employed that is responsive to the phase voltages to generate voltage modulation signals corresponding to the phase voltages. A plurality of current sharing channels are respectively associated with each of the plurality of inductive components and are configured generate current sharing modulation signals in response to the circulating current flows. The PWM control signals are generated based on modulation signals obtained by combining the current sharing modulation signals and voltage modulation signals.

Abstract: A peak detector for synchronized switch harvesting on inductor converter includes a comparator and a filter for filtering an input signal to the peak detector and for providing a filtered signal to an input of the comparator. The filter has differentiating and integrating transfer characteristics for low and high frequency ranges, respectively, of the input signal so that peaks of the input signal to the peak detector which have primarily frequency components in the low range cause a relatively strong variation of the filtered signal and peaks of the input signal to the peak detector which have primarily frequency components in the high range are substantially integrated and cause a relatively weak variation of the filtered signal. The relatively strong variation of the filtered signal crosses a threshold of the comparator, which is configured to generate an output signal indicating a relation of the filtered signal regarding the comparator threshold.

Abstract: A power converter configured to control an electrical load including a supply DC bus, a bus capacitor, a pre-charging circuit of the bus capacitor provided with a limiting resistor, a switched-mode power supply, and a starter assembly of the switched-mode power supply. The power converter includes a selection mechanism configured to connect the supply DC bus either, in a first state, to the starter assembly of the switched-mode power supply or, in a second state, to the bus capacitor to short circuit the limiting resistor.