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This page is updated frequently with new Led Lighting-related patent applications. Subscribe to the Led Lighting RSS feed to automatically get the update: related Led RSS feeds. RSS updates for this page: Led Lighting RSS RSS


Ac led lighting apparatus using voltage edge detector

Ac led lighting apparatus using voltage edge detector

Controller, a driver circuit and a method for controlling a dimmable led lighting circuit, and a dimmable led lighting…

Date/App# patent app List of recent Led Lighting-related patents
07/24/14
20140204571
 Led lighting apparatus for use with ac-output lighting ballasts patent thumbnailLed lighting apparatus for use with ac-output lighting ballasts
An apparatus for interfacing a ballast to at least one light emitting diode (led) includes a passive rectifier circuit and matching circuit coupled to an input port and/or an output port of the passive rectifier circuit and configured to at least partially match an impedance of the ballast.. .
07/24/14
20140203722
 Ac led lighting apparatus using voltage edge detector patent thumbnailAc led lighting apparatus using voltage edge detector
An ac led lighting apparatus using a voltage edge detector is provided. The ac led lighting apparatus includes: a rectification unit configured to rectify an ac voltage to output a dc rectified voltage; an led unit including a first light emitting group and a second light emitting group each including at least one led; and an led driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage.
07/24/14
20140203718
 Ac led lighting apparatus using voltage edge detector patent thumbnailAc led lighting apparatus using voltage edge detector
Exemplary embodiments of the present invention disclose an alternating current (ac) light emitting diode (led) lighting apparatus including a rectification unit configured to receive an ac voltage and output a dc rectified voltage, an led unit connected to the rectification unit, the led unit comprising at least two light emitting groups, each light emitting group comprising at least one led, and an led driving control unit connected to the rectification unit, the led driving control unit configured to establish a series or parallel connection between the light emitting groups, by comparing a voltage level of the rectified voltage with a reference voltage. The led driving control unit is configured to calculate a reference voltage adjustment value in order to compensate for a signal processing delay of the led driving control unit..
07/24/14
20140203715
 Controller, a driver circuit and a method for controlling a dimmable led lighting circuit, and a dimmable led lighting circuit patent thumbnailController, a driver circuit and a method for controlling a dimmable led lighting circuit, and a dimmable led lighting circuit
A driver and lighting circuit also disclosed, as is a method for controlling a dimmable lighting circuit.. .
07/24/14
20140203714
 Led lighting apparatus for use with ac-output lighting ballasts patent thumbnailLed lighting apparatus for use with ac-output lighting ballasts
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.
07/24/14
20140203710
 Swimming pool led lighting system and method using proprietary frequency-shift keying over 2-wire power cord patent thumbnailSwimming pool led lighting system and method using proprietary frequency-shift keying over 2-wire power cord
A system for controlling a lamp comprises a central controller having a waveform converter capable of modulating a control signal at more than one frequency over a two wire power cable. The control signal is capable of modifying a property of the lamp.
07/17/14
20140198499
 Led lighting apparatus with flexible light modules patent thumbnailLed lighting apparatus with flexible light modules
The present disclosure involves a street light. The street light includes a base, a lamp post coupled to the base, and a lamp head coupled to the lamp post.
07/17/14
20140197751
 Spectral shift control for dimmable ac led lighting patent thumbnailSpectral shift control for dimmable ac led lighting
Apparatus and associated methods involve operation of an led light engine in which a relative intensities of selected wavelengths shift as a function of electrical excitation. In an illustrative example, current may be selectively and automatically diverted substantially away from at least one of a number of leds arranged in a series circuit until the current or its associated periodic excitation voltage reaches a predetermined threshold level.
07/17/14
20140197749
 Ac led lighting apparatus using voltage edge detector patent thumbnailAc led lighting apparatus using voltage edge detector
An ac led lighting apparatus using a voltage edge detector is provided. The ac led lighting apparatus includes: a rectification unit configured to rectify an ac voltage to output a dc rectified voltage; an led unit including a first light emitting group and a second light emitting group each including at least one led; and an led driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage.
07/17/14
20140197748
 Led lighting tube patent thumbnailLed lighting tube
The led lighting tube that is compatible with an electronic ballast has two snubber circuits, a waveform conversion circuit, and at least one led light string. The snubber circuits are connected to terminals of the led lighting tube, and input terminals of each snubber circuit are connected to electrode pins of a corresponding terminal, and each snubber circuit has at least one resistor connected in series between the electrode pins of the corresponding terminal.
07/17/14
20140197741
Led lighting apparatus
When an led lighting apparatus which is a lighter load than an incandescent lamp or halogen lamp is connected to a dimmer, a malfunction may occur. The invention prevents the occurrence of such malfunction without defeating the purpose of low power consumption of the led lighting apparatus.
07/17/14
20140197738
Light socket for series led lighting
Electrical and mechanical connection for a series connected led lamp to an appropriate electrical circuit. The circuit contains additional series connected light producing elements.
07/10/14
20140192512
Chemical glow devices with led lighting
The performance of chemical glow lights is enhanced by the provision of a battery-powered light-emitting diode (led). The led can be provided inside a pouch containing chemicals which, when mixed together, produce a glowing light.
07/10/14
20140191675
System and method for controlling a light emitting diode fixture
One embodiment in accordance with the invention can include a circuit for controlling a light emitting diode (led) lighting fixture via a power line. The circuit can include a power switch coupled to the power line and is for outputting a firing angle.
07/10/14
20140191668
Retractable lighting fixture
Disclosed is a retractable lighting fixture having a retractable led lighting layer. One or more optical layers (40, 240a/b, 340a/b, 440) may optionally be provided over the led lighting layer (30, 230, 330, 430).
07/10/14
20140191662
Led lighting system and controlling method using the same
A led lighting system and a controlling method using the same is disclosed. In accordance with the present invention, a central controller extracts an id information assigned to each of one or more led lighting devices using a power line communication and classifies the extracted id information into id groups according to a user command by assigning a management information thereto to enable controlling of the one or more led lighting devices based on the management information..
07/10/14
20140191201
Apparatus and method for making oled lighting device
An apparatus for depositing one or more organic material layers of an oled lighting device upon a first region of a substrate and one or more conducting layers upon a second region, wherein the conducting layers partially or completely cover and extend beyond one side of the organic layers, comprising: a reusable mask in contact with the substrate, at least one mask open area having an overhang feature; one or more sources of vaporized organic material, selected to form layers of the oled lighting device, and the vaporized organic material plume is shaped, on the side corresponding to the mask overhang feature, so as to limit substantial transfer of organic material on said side to angles less than or equal to a selected cutoff angle to the first region; and one or more sources of vaporized conducting material that transfer conducting material to the second region, wherein the second region partially or completely overlaps the first region and extends beyond the first region on the side corresponding to the overhang feature of the mask.. .
07/10/14
20140191200
Apparatus and method for making oled lighting device
An apparatus for depositing one or more organic material layers of an oled lighting device upon a first region of a substrate and one or more conducting layers upon a second region, wherein the conducting layers partially or completely cover and extend beyond one side of the organic layers, comprising: a reusable mask in contact with the substrate, at least one mask open area having an overhang feature; one or more sources of vaporized organic material, selected to form layers of the oled lighting device, and the vaporized organic material plume is shaped, on the side corresponding to the mask overhang feature, so as to limit substantial transfer of organic material on said side to angles less than or equal to a selected cutoff angle to the first region; and one or more sources of vaporized conducting material that transfer conducting material to the second region, wherein the second region partially or completely overlaps the first region and extends beyond the first region on the side corresponding to the overhang feature of the mask.. .
06/26/14
20140177913
Enhanced contrast for object detection and characterization by optical imaging
Enhanced contrast between an object of interest and background surfaces visible in an image is provided using controlled lighting directed at the object. Exploiting the falloff of light intensity with distance, a light source (or multiple light sources), such as an infrared light source, can be positioned near one or more cameras to shine light onto the object while the camera(s) capture images.
06/26/14
20140177226
Led lighting apparatus with facilitated heat transfer and fluid seal
Led lighting apparatus including (a) a circuit board which has a plurality of light sources spaced thereon, (b) a heat sink to which the circuit board is thermally coupled, and (c) a securement structure which includes a rigid peripheral structure applying force along a peripheral area of the circuit board toward the heat sink to increase the thermal coupling therebetween to facilitate heat transfer from the light sources during operation. The lighting apparatus may also include an optical member with a plurality of lens portions over corresponding light sources and a peripheral region, the securement structure engaging the peripheral region which sandwiches a gasket against the heat sink.
06/26/14
20140177209
Linkable linear light emitting diode system
A linkable linear light emitting diode (led) system provides apparatus and method for mechanically, optically, and electrically linking multiple led modules disposed over a wide and separated area of a ceiling system. Openings can be cut in ceiling tiles of a drop ceiling system and the led lighting modules are coupled to the tile through the opening, with the tile being sandwiched between different portions of the module.
06/26/14
20140176009
Led lighting system
An led lighting system is provided for connection to a variable power source providing input power, the led lighting system having at least one power analyzing and processing circuitry connecting to the variable power source, and being configured to identify one or more characteristics of the input power, where the characteristics are selected from amplitude, frequency and pulse width of the input power, compare one or more of the characteristics of the input power to preset control criteria either in hardware or software or both to yield a comparison result, and then control the current control circuitry according to the comparison result.. .
06/26/14
20140175999
Led lighting device and driving method for the same
It is provided an led lighting device calibratable to 0 to 100% of wide range about a chromaticity and luminance of a illumination light by a simple configuration, and a driving method for the led lighting device. The led lighting device is provided with a first light-emitting unit and a second light-emitting unit differing a color temperature mutually, and a control circuit for executing a cyclic light/quench control of the first light-emitting unit and the second light-emitting unit, and for executing a light control of the first light-emitting unit and the second light-emitting unit by a pnm (pulse number modulation) control in a fixed cycle so as to have a lighting period ton for lighting/quenching the first light-emitting unit and the second light-emitting unit complementarily, and a quenching period toff for quenching both the first light-emitting unit and the second light-emitting unit..
06/26/14
20140175996
Led lighting apparatus with improved total harmonic distortion in source current
The led lighting apparatus includes: a rectification block; an led block including a first light emitting group and a second light emitting group; a charging/discharging block configured to charge electric charges in a charging period, and discharge electric charges in a discharging period; a driving control unit configured to determine a voltage level of a rectified voltage, controls a path selection switch to connect the rectification block to the led block and controls the charging/discharging block to charge electric charges in the charging period, and controls the path selection switch to connect the rectification block to a ground and controls the charging/discharging block to discharge electric charges from the charging/discharging block to the led block in the discharging period; and a path selection switch configured to connect the rectification block to the led block in the charging period, and connect the rectification block to the ground in the discharging period.. .
06/26/14
20140175991
Presence sensor-controlled lighting apparatus
A lighting apparatus, in particular a table lamp, includes a light source; a power and control device connected to the light source; and a power line for powering the light source and the power and control device by means of a power unit; the power and control device being designed: to turn the light source off after a first predetermined time interval in which the presence sensor detects no user presence; and to cut itself and any other electronic devices of the apparatus off from the power supply, by cutting off the power line, after a second predetermined time interval, longer than the first time interval, in which the presence sensor detects no user presence.. .
06/19/14
20140169005
Heat cooling apparatus assembly of led illuminating device having heat pipe and heat sink
The present invention provides the cooling apparatus assembly of the led lighting device, consisting of a led lighting apparatus mounting plate (300), heat pipes (400) that are secured at the opposite surface to the surface where the lighting apparatus is fixed, and heat radiation pins (500) that are mechanically pressed and fixed to the heat pipes. On the mounting plate (300) of said led lighting apparatus, at least one fixing hole (320) is provided and the heat pipes (400) are fixed rearward by the binding bolt (310), perpendicular to the mounting plate.
06/12/14
20140160726
Lighting device
A lighting device may include a circuit board, at least one led lighting chip provided on one side of the circuit board, and a phosphor layer arranged to enclose the led lighting chip, wherein the phosphor layer has different thicknesses at different light emergence angles.. .
06/12/14
20140159591
Direct-current power supply device and lighting apparatus
According to one embodiment, a direct-current power supply device and an led lighting apparatus are provided in which arc discharge is more certainly detected and versatility can be improved. The direct-current power supply device includes a constant-current circuit, a voltage detection unit, a current detection unit and a control unit.
06/12/14
20140159584
Spectral shift control and methods for dimmable ac led lighting
Apparatus and associated methods involve operation of an led light engine in which a relative intensities of selected wavelengths shift as a function of electrical excitation. In an illustrative example, current may be selectively and automatically diverted substantially away from at least one of a number of leds arranged in a series circuit until the current or its associated periodic excitation voltage reaches a predetermined threshold level.
06/12/14
20140159583
Method and led apparatus for lighting with led lighting controller
A high efficiency led lighting system with four led modules. Each module has heat sink assemblies arranged in rows.
06/12/14
20140159079
Cost-effective led lighting instrument with good light output uniformity
The present disclosure involves a lighting instrument. The lighting instrument includes a board or substrate, for example, a printed circuit board.
06/05/14
20140153232
Multi-voltage and multi-brightness led lighting devices and methods of using same
A single chip multi-voltage or multi-brightness led lighting device having at least two led circuits. Each of the at least two led circuits having at least two leds connected together in series.
06/05/14
20140153225
Led lighting device
An led lighting apparatus includes: a light source module having an led light source therein; a thermal base coupled with the light source module and configured to receive heat generated by the light source module; a heat-dissipating member coupled with edge regions of the thermal base to discharge heat transferred from the thermal base and having a ventilation unit formed therein for opening a central area of the thermal base so as to facilitate air ventilation; and a power supply unit disposed outside the heat-dissipating member so as to be positioned in a path of air moving toward the heat-dissipating member and configured to supply electric power to the light source module, thereby improving the heat-dissipating efficiency by facilitating the air around the heat-dissipating member and the power supply unit to flow without stagnation and effectively preventing overheating of the power supply unit by cooling the power supply unit.. .
06/05/14
20140152192
Power supply apparatus for led lighting and led lighting apparatus using the power supply apparatus
Disclosed are a power supply apparatus for an led lighting and an led lighting apparatus using the power supply apparatus. The led lighting apparatus includes a power source unit configured to supply a rectified voltage, a voltage converter configured to include at least one first inductor and to convert the rectified voltage, an auxiliary coil configured to include a second inductor and to supply a detection voltage corresponding to the current of the first inductor of the voltage converter, a controller configured to control the current of the voltage converter using a driving pulse generated in response to a control signal and a sensing voltage, and a voltage regulation circuit configured to regulate the detection voltage and to supply the regulated voltage as an operating voltage for the controller..
06/05/14
20140152183
Led lighting apparatus, current regulator for the led lighting apparatus, and current regulation method of the led lighting apparatus
The present invention discloses an led lighting apparatus. The led lighting apparatus includes a converter for transforming rectified voltage in accordance with a switching operation according to a driving pulse and outputting the transformed voltage, a current regulator for generating the driving pulse having a pulse width varied in response to a control signal and the amount of current of the converter and switching the operation of the converter using the generated driving pulse, and a peripheral circuit module for providing the control signal for controlling the dimming of an led lighting..
06/05/14
20140151729
Led lighting devices with quantum dot glass containment plates
A lighting device is provided comprising a chip-on-board (cob) light emitting diode (led) light source, a light source encapsulant, a quantum dot distributed color conversion medium, and a quantum dot glass containment plate. The cob led light source comprises at least one led and defines a light source encapsulant cavity in which the light source encapsulant is distributed over the led.
06/05/14
20140151721
Phase transition cooling in led lighting devices
A lighting device is provided comprising a chip-on-board (cob) light emitting diode (led) light source, a phase transfer fluid disposed in a hermetically sealed phase transfer fluid chamber, a phase transfer fluid wicking structure, a distributed color conversion medium, and a glass containment plate. The color conversion medium is distributed in two dimensions over an emission field of the lighting device within the glass containment plate.
05/29/14
20140146567
Optical element and led lighting device having same
An optical element including a light guide plate and a cone-shaped reflector is provided. The light guide plate has a first surface, a second surface, a first side surface and a second side surface.
05/29/14
20140146540
Led lighting fixture
An led lighting fixture including a one-piece housing portion having a hollow interior cavity defined by a substantially planar interior backwall surface and a surrounding wall extending therefrom to a forward edge. An led illuminator is on the substantially planar interior backwall surface, a backwall being a heat sink for transferring heat away from the led illuminator during operation.
05/22/14
20140143034
Optical communications via illumination light of led lighting system
A lighting system for using illumination light of light emitting diodes (leds) to provide one-way data communication to user mobile communication devices is described. The lighting system includes illumination lighting devices at different locations within an area to emit visible illumination light illuminating the area.
05/22/14
20140140052
Led lighting fixture
A light emitting diode (led) lighting fixture for achieving a desired illumination pattern includes a support plate and a plurality of panels connected to the support plate. Each panel has an array of leds mounted to a planar surface thereof, and each of the panels is rotatable in at least two dimensions..
05/22/14
20140139142
Single phase bridgeless boost converter for led lighting applications
A circuit serving as a power source for light-emitting diode (led) lighting applications, the circuit comprising a boost converter comprising a pair of boost field-effect transistors (fets) and a boost inductor coupled to the pair of boost fets, wherein an input voltage feeding the boost converter has a sinusoidal waveform, and wherein a half cycle of the input voltage is represented by a plurality of time slices, and a controller coupled to the boost converter and configured to determine a current time slice in the plurality of time slices, generate one or more output signals based at least in part on the current time slice and without a need to compute any multiplier function involving the input voltage, and control states of the boost fets using the one or more output signals.. .
05/22/14
20140139125
Led lighting device with improved modulation depth
A lighting device using an led is provided where an led lighting device having an improved modulation depth which is calculated with the maximum value and the minimum value of an amount of instantaneous light emission in an ac-driven led lighting device having an led turned on and off by using an instantaneous ac voltage periodically varied with time.. .
05/22/14
20140139107
Led lighting system and method
Various embodiments of the invention allow led lamp fixtures to pass emi testing irrespective of whether the lamp fixture is operated by a magnetic transformer or an electric transformer without causing input current waveform distortion and without defeating transformer compatibility. In certain embodiments, the type of transformer is determined based on detecting characteristic voltage waveforms and based that determination an emi filter is automatically switched in and out of the lamp circuit..
05/15/14
20140134764
White light emitting diode (led) lighting device driven by pulse current
A white led lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet led chips, blue afterglow luminescence materials a and yellow luminescence materials b. Wherein the weight ratio of the blue afterglow luminescence materials a to the yellow luminescence materials b is 10-70 wt %:30-90 wt %.
05/15/14
20140133156
Led lighting apparatus and housing
A lighting apparatus and method for making the same are presented. In some aspects the apparatus includes a plurality of led light sources mounted to a metal circuit board in a housing of the apparatus.
05/15/14
20140132177
White light emitting diode (led) lighting device driven by pulse current
A white led lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet led chips, blue afterglow luminescence materials a and yellow luminescence materials b. Wherein the weight ratio of the blue afterglow luminescence materials a to the yellow luminescence materials b is 10-70 wt %:30-90 wt %.
05/15/14
20140131746
White light emitting diode (led) lighting device driven by pulse current
A white led lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet led chips, blue afterglow luminescence materials a and yellow luminescence materials b. Wherein the weight ratio of the blue afterglow luminescence materials a to the yellow luminescence materials b is 10-70 wt %: 30-90 wt %.
05/08/14
20140125253
Led ballast controller device
A device and method to interface with a magnetic or electronic fluorescent ballast; evaluate, process, and regulate the incoming power from the ballast device and output a steady ac power that can be used by led drivers, led chips, or set of multiple led chips in a tube or bulb application. This device and method will allow for a non-fluorescent replacement lighting device such as a led lighting tube or bulb to be used in a fluorescent light luminaire (fixture) without any electrical wiring modification or removal of the electronic or magnetic ballast..
05/08/14
20140125237
Led lighting device
An led lighting device may include a first constant current source, a switched mode power supply, a plurality of leds between the switched mode power supply and the first constant current source, and powered by the switched mode power supply, and a voltage divider between the switched mode power supply and the plurality of leds. In various embodiments, the voltage divider may include a plurality of switches.
05/08/14
20140125229
Multi-segment led lighting apparatus configurations
A solid state lighting apparatus can include a light emitting diode (led) string that includes a plurality of light emitting diode (led) segments that are coupled in series with one another wherein a ratio of respective numbers of leds in each of the segments is about equal to a ratio of respective average powers for each of the respective segments. Other configurations are also disclosed..
05/01/14
20140118359
Control for digital lighting
A digitally controlled lighting system where aspects have a central media server connected to remote media servers. The connection may have separate networks for control versus media.
05/01/14
20140117866
Apparatus and method of operation of a low-current led lighting circuit
An apparatus and method of operation of a low-current led lighting circuit are disclosed. The invention utilizes high ac voltage input and unreduced voltage ripple component of the rectified dc power signal, which provides the ability to drive an led load at high power factor at low current.
05/01/14
20140117854
Led lighting driver
A light-emitting diode (led) lighting driver is provided, which includes a bridge rectifier, multiple led sections, multiple shunt regulators, a weighted current mirror array, a mean power integrator, and a reference generator. The bridge rectifier provides a rectified sinusoidal voltage.
04/24/14
20140112006
Led lighting apparatus
Provided is an led lighting apparatus. The led lighting apparatus include an led, a socket part supplying a power into the led, a heat sink body having one side on which the led is mounted and the other side to which the socket part is coupled, and a heat sink pin disposed along a circumference of the heat sink body, the heat sink pin having one side extending downward from the heat sink body.
04/24/14
20140111987
Led lighting apparatus having an adjustable light distribution
An led lighting apparatus having adjustable light distribution comprises: a support panel on which a plurality of heat dissipation fins are disposed on a back surface thereof, the support panel providing a parallel front part which is not parallel to the ground; a board on which a plurality of leds are mounted, and being coupled to said front part of the support panel; and a reflection part fixed to the support panel so as to be disposed on the front surface of said substrate, and reflecting light emitted from said plurality of leds to provide a curved reflection surface which forms light distribution patterns on the ground. The light emission surface of the led is not disposed parallel to the ground.
04/24/14
20140111984
Beam shaping lens and led lighting system using same
A beam shaping lens and an led lighting system are disclosed. The lens according to example embodiments can concentrate or spread light, depending on the specific embodiment used.
04/24/14
20140111102
Method of driving led lighting sources and related device
The electronic switches can be selectively rendered conductive, each one at a respective time interval, thereby selectively distributing the current of the current generator over the led strings.. .
04/24/14
20140111091
Spectral shift control for dimmable ac led lighting
Apparatus and associated methods involve operation of an led light engine in which a relative intensities of selected wavelengths shift as a function of electrical excitation. In an illustrative example, current may be selectively and automatically diverted substantially away from at least one of a number of leds arranged in a series circuit until the current or its associated periodic excitation voltage reaches a predetermined threshold level.
04/24/14
20140111084
Oled lighting device
An organic light-emitting diode (oled) lighting device comprises an organic light emitting unit and a power supply unit. The organic light emitting unit has a substrate, and a first electrode layer, an organic light emitting layer and a second electrode layer sequentially laminated on the substrate.
04/17/14
20140104835
Led lighting fixture
An led lighting fixture including a housing and an led assembly secured with respect to the housing to permit air/water-flow over the led assembly. The led assembly includes a plurality of led-array modules on an equal plurality of individual heat sinks.
04/17/14
20140103804
Power distribution system and method for led lighting
There is disclosed an improved led lighting system and method which limits current and employs a voltage significantly greater than line voltage in order to allow lighting circuits to be built with up to thousands of watts fed from a sing power/data source. The present system and method allows exceptionally long lengths of led lighting of 200 meters or more for large scale led lighting applications such as the architectural delineation of skyscrapers and bridges..
04/17/14
20140103311
Oled lighting device and method for manufacturing the same
An organic light-emitting diode (oled) lighting device includes a substrate, at least a conductive wire, an insulating layer, a first electrode layer, an organic light-emitting layer and a second electrode layer. The conductive wire is disposed on the substrate and has a top surface away from the substrate.
04/10/14
20140098535
Segmented led lighting system
The present invention is a segmented led lighting system. In particular, the present invention is directed to a set of channel segments connected by a flexible lens sleeve that can be positioned in a variety of ways.
04/10/14
20140097849
Method of detecting a led failure, a controller therefor, a lighting unit and lighting system
Disclosed herein is a method of detecting an led failure in a series-connected string of leds using a parameter indicative of a voltage difference between a voltage across the string at a predetermined relatively high current and a voltage across the string at a predetermined relatively low current. The disclosure extends to controllers configured to detect an led failure in a string of leds, to led lighting units comprising such controllers, and to lighting subsystems, for instance automobile lighting subsystems..
04/10/14
20140097757
Multi-purpose rechargeable led lighting device
An led lighting device includes at least one led light source emitting light, at least one rechargeable battery for supplying power when external power is not available, at least one electrical connector for connecting the rechargeable battery to external power source for recharging, and at least one control mechanism for switching the operation mode of the device. By setting the operation mode via the control mechanism, the led light device can be used for more than one intended purposes such as regular lighting, emergency lighting, and flashlight..
04/10/14
20140097753
Led lighting system for self-dissipation of heat
A led lighting system includes: a power unit for providing a power supply source for the lighting system, a led circuit connected to the power unit for illuminating the light emitting diodes of the led circuit, a heat control unit connected between the power unit and the led circuit for controlling heat as produced, and a heat dissipating device thermally connected to the heat control unit for outwardly dissipating the heat produced by the lighting system for preventing light attenuation or damage of the light emitting diodes.. .
04/03/14
20140092580
Led lamp and led lighting assembly
An led lamp or led lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide.
04/03/14
20140092232
Image obtaining device and detecting apparatus having the same
An image obtaining device is provided, including a waterproof casing, a ccd image transducer mounted in the waterproof casing, a motor having a driving shaft and being mounted in the waterproof casing, and a transparent plate covered on one side of the waterproof casing, connected to the driving shaft of the motor, and driven to rotate by the motor. A detecting apparatus having the above image obtaining device is further provided.
04/03/14
20140091727
Off peak powered lighting system for offices and buildings
The off-peak powered lighting system provides light to offices, buildings and structures via banks of led light fixtures. The off-peak system is electrically coupled to battery power source during peak power cycles and then is coupled to an electrical power grid during off-peak cycles.
04/03/14
20140091332
Led lighting devices incorporating waveguides
A led lighting device includes at least one waveguide element and multiple light-emitting sources such as leds or led packages, which may be optically coupled though different light entry regions to the at least one waveguide. Multiple light solid state sources may be arranged in strips.
04/03/14
20140091282
Process for fabricating metal bus lines for oled lighting panels
Systems and methods for the design and fabrication of oleds, including high-performance large-area oleds, are provided. Variously described fabrication processes may be used to deposit and pattern bus lines with a smooth profile and a gradual sidewall transition.


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Led Lighting topics: Led Lighting, Lighting Fixture, Notification, Lighting Apparatus, Control Unit, Circuit Board, Heat Exchanger, Heat Exchangers, Air Conditioning, Distributed, Led Device, Longitudinal Direction, Liquid Cooling, Signal Processing, Reflective Coating

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