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Cree Inc patents


Recent patent applications related to Cree Inc. Cree Inc is listed as an Agent/Assignee. Note: Cree Inc may have other listings under different names/spellings. We're not affiliated with Cree Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "C" | Cree Inc-related inventors


 new patent  Control circuit for modulating an analog dimming command signal

An led lighting device comprises at least one led selectively energizable to develop light and a control circuit coupled to the led that develops a command signal comprising first and second command signal components for controlling the at least one led to cause the led to develop light comprising a desired brightness in response to the first command signal component. The control circuit controls the at least one led to cause the led to develop light comprising a further desired parameter magnitude other than desired brightness in response to the second command signal component, and the first signal component comprises an iec 0-10 volt analog lighting control.. ... Cree Inc

 new patent  Adjustable led light fixture for use in a troffer

The light fixture is configured to be mounted in a troffer. The light fixture includes a light emitting assembly including at least one led and a reflector assembly. ... Cree Inc

Nuclear reactor protection systems and methods

A nuclear reactor protection system includes a plurality of functionally independent modules, each of the modules configured to receive a plurality of inputs from a nuclear reactor safety system, and logically determine a safety action based at least in part on the plurality of inputs, each of the functionally independent modules comprising a digital module or a combination digital and analog module, an analog module electrically coupled to one or more of the functionally independent modules, and one or more nuclear reactor safety actuators communicably coupled to the plurality of functionally independent modules to receive the safety action determination based at least in part on the plurality of inputs.. . ... Cree Inc

Stabilized, high-doped silicon carbide

Stabilized, high-doped silicon carbide is described. A silicon carbide crystal is grown on a substrate using chemical vapor deposition so that the silicon carbide crystal includes a dopant and the strain compensating component. ... Cree Inc

Concealer plate for a lighting fixture

A concealer plate for a lighting fixture includes a first concealer plate surface, a second concealer plate surface, and two or more magnets. The magnets are recessed in the first concealer plate surface such that the magnets are inset from the first concealer plate surface by approximately a predetermined depth. ... Cree Inc

Space scoring for a lighting network

The present disclosure relates to determining one or more of a space occupancy score, space energy score, and space efficiency score for a collection of lighting endpoints in a lighting network. The space occupancy score is indicative of how effective the occupancy groups are configured for a given space or the utilization level for a space. ... Cree Inc

Power modules having an integrated clamp circuit and process thereof

A power module apparatus includes a power substrate, at least one power device electrically connected to the power substrate and a gate-source board mounted relative to the power substrate, the gate-source board electrically connected to the at least one power device, a housing secured to the power substrate, and a clamping circuit electrically connected to the at least one power device. The clamping circuit being configured to reduce a voltage charge up at a gate of the at least one power device to within 8 v of a desired voltage.. ... Cree Inc

Power modules having an integrated clamp circuit and process thereof

The disclosure is directed to a power module apparatus that includes a base plate, a power substrate positioned relative to the base plate, at least two power contacts, a gate-source board mounted relative to the power substrate, gate drive connectors electrically connected to the gate-source board, a housing secured to the power substrate, and a clamping circuit electrically connected to the at least one power device. The clamping circuit being configured to clamp an input to a gate of the at least one power device. ... Cree Inc

A luminaire and connection mechanism for connecting multiple luminaires

A luminaire has a light emitting portion extending between first second end caps to define a length between the first end cap and the second end cap. The first end cap comprises a receptacle and the second end cap comprises a post both of which extend in an insertion direction. ... Cree Inc

Power semiconductor devices having gate trenches and buried edge terminations and related methods

Semiconductor devices include a semiconductor layer structure comprising a drift region that includes a wide band-gap semiconductor material. A shielding pattern is provided in an upper portion of the drift region in an active region of the device and a termination structure is provided in the upper portion of the drift region in a termination region of the device. ... Cree Inc

Lighting device including solid state emitters with adjustable control

Lighting devices and methods utilize multiple independently controllable groups of solid state light emitters of different dominant wavelengths, with operation of the emitter groups being automatically adjusted by processor(s) to provide desired illumination. Operation of the emitter groups may be further affected by sensors and/or user input commands (e.g., sound patterns, gesture patterns, or signal transmission). ... Cree Inc

Method for manufacturing lens with facilitated light diffusion

A method for manufacturing of a lens for distribution of light from a light emitter. The method provides an injection-molding cavity defined by a shape-forming configuration with a texturing in at least one area of the cavity. ... Cree Inc

Light emitting diode (led) devices, components and methods

Devices, components and methods containing one or more light emitter devices, such as light emitting diodes (leds) or led chips, are disclosed. In one aspect, a light emitter device component can include a metallic substrate with a mirrored surface, one or more light emitter devices mounted directly or indirectly on the mirrored surface, and one or more electrical components mounted on the top surface and electrically coupled to the one or more light emitter devices, wherein the one or more electrical components can be spaced from the mirrored metal substrate by one or more non-metallic layers. ... Cree Inc

Power converter circuitry with improved control scheme

A method of operating a switching power converter includes operating the switching power converter in a boundary conduction mode when a switching frequency of a switch in the switching power converter is below a switching frequency threshold such than an on time of the switch is adjusted based on a desired output power of the switching power converter, and operating the switching power converter in a discontinuous conduction mode when the switching frequency of the switch is above the switching frequency threshold such that one or more of the on time of the switch and a switching period of the switch are adjusted based on the desired output power of the switching power converter and the on time of the switch is clamped at a minimum switch on time.. . ... Cree Inc

05/10/18 / #20180128961

Optic assemblies and fixtures comprising the same

In one aspect, optic assemblies and waveguide fixtures comprising the same are described herein. In an exemplary embodiment, an optic assembly includes an optic housing, an optical insert positioned in the optic housing, and a waveguide optic positioned in the optical insert. ... Cree Inc

05/10/18 / #20180128960

Optical inserts and waveguide fixtures comprising the same

In one aspect, lighting devices are described herein. A lighting device comprises an optic housing, a waveguide optic and an optical insert positioned in the housing, the optical insert comprising one or more reflective sidewalls for redirecting light emitted from the waveguide optic. ... Cree Inc

04/19/18 / #20180110111

Lighting fixture sensor network

A lighting fixture includes a light source, a housing coupled to the light source, communications circuitry, and control circuitry. The housing includes an opening through which light from the light source is provided. ... Cree Inc

04/19/18 / #20180108816

Light emitting devices having closely-spaced broad-spectrum and narrow-spectrum luminescent materials and related methods

A semiconductor light emitting device includes an led and an associated recipient luminophoric medium that includes respective first through fourth luminescent materials that down-convert respective first through fourth portions of the radiation emitted by the led to radiation having respective first through fourth peak wavelengths. The first peak wavelength is in the green color range and the second through fourth peak wavelengths are in the red color range. ... Cree Inc

04/19/18 / #20180103819

Extension/identification apparatus and method of using same

An identification/extension system comprises a kit for marking an instrument with distinguishing indicia. The kit includes at least one substantially cylindrical elastic band having distinguishing indicia thereon, and a collar member adapted for releasable attachment to an instrument and having an inner surface and an outer surface. ... Cree Inc

04/12/18 / #20180103529

Enhanced lighting fixture

A lighting fixture having a light source, a light sensor, a communication interface, and circuitry is described. In addition to controlling the light source, the circuitry is adapted to monitor for a light signal provided from a handheld device via the light sensor; upon receiving the light signal, measure a signal level associated with the light signal; and effect transmission of the signal level to the handheld device via the communication interface. ... Cree Inc

04/12/18 / #20180099798

Packaging materials for food products

Provided herein are packaging materials that include a non-foamed layer and a foamed layer including a polyethylene.. . ... Cree Inc

04/05/18 / #20180098201

Indoor location services using a distributed lighting network

A method includes the steps of obtaining distance measurements between a device and a number of lighting fixtures, processing the distance measurements to assign coordinates to each one of the lighting fixtures, and facilitating registration of the coordinates of a subset of the lighting fixtures to obtain registered coordinates for all of the lighting fixtures. The coordinates indicate a relative location of each one of the lighting fixtures with respect to one another. ... Cree Inc

04/05/18 / #20180097168

Nano-structured porous thermoelectric generators

Methods and processes to fabricate thermoelectric materials and more particularly to methods and processes to fabricate nano-sized doped silicon-based semiconductive materials to use as thermoelectrics in the production of electricity from recovered waste heat. Substantially oxidant-free and doped silicon particulates are fractured and sintered to form a porous nano-sized silicon-based thermoelectric material.. ... Cree Inc

03/29/18 / #20180092189

Lighting wall control with virtual assistant

A lighting wall controller can be a retrofit for existing light switches, and the lighting wall control replaces the conventional light switch and can still work as a conventional light switch or other power switch with “dumb” lights or appliances while providing the ability to control “smart” lights and/or other “smart” devices with voice commands. In addition to controlling lights and/or devices, voice commands can be used to provide information or actions back to the user in response to the voice command. ... Cree Inc

03/29/18 / #20180089606

System and method for ranking a business

A system and method for ranking a business are provided. A rank score for a business is calculated based on verified information about the business provided by a person associated with the business itself, as well as publicly available information about the business gathered from trusted sources over a computer network. ... Cree Inc

03/15/18 / #20180076368

Light emitting diodes and methods

Light emitting diode (led) devices, methods and systems are provided. An example apparatus can include an underfill layer separate from a bonding layer. ... Cree Inc

03/08/18 / #20180070462

High voltage power module

A power module includes a number of sub-modules connected via removable jumpers. The removable jumpers allow the connections between one or more power semiconductor die in the sub-modules to be reconfigured, such that when the removable jumpers are provided, the power module has a first function, and when the removable jumpers are removed, the power module has a second function. ... Cree Inc

03/08/18 / #20180069083

Controlled ion implantation into silicon carbide using channeling and devices fabricated using controlled ion implantation into silicon carbide using channeling

Methods of forming a semiconductor structure include the use of channeled implants into silicon carbide crystals. Some methods include providing a silicon carbide layer having a crystallographic axis, heating the silicon carbide layer to a temperature of about 300° c. ... Cree Inc

03/08/18 / #20180066808

Luminaires using waveguide bodies and optical elements

According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. ... Cree Inc

03/01/18 / #20180058266

Methods and systems for the storage of nuclear energy in increased energy density coal

Systems and methods to reduce the emissions of carbon dioxide associated with coal fired power plants by using electricity from a nuclear power plant to power a coal processing plant that reduces the moisture content of coal resulting in an increased energy density beneficiated coal are provided. The system includes a source of electricity from a nuclear power plant; a coal processing plant configured to reduce the moisture content of the coal by a beneficiation process to produce an increased energy density coal; and a coal-fired power plant configured to convert the increased energy density coal to electricity on demand at a higher efficiency with reduced emissions of carbon dioxide.. ... Cree Inc

03/01/18 / #20180058265

Methods and systems for storage of renewable energy sources in increased energy density coal

Methods and systems for reducing carbon dioxide emissions from a coal-fired power plant by using thermal energy from a non-carbon source to reduce the amount of electrical energy needed to reduce the moisture content of coal and increase the energy density of coal prior to combustion are provided. The system includes at least one non-carbon thermal energy source; a coal processing plant configured to reduce the moisture content of coal and produce an increased energy density beneficiated coal, wherein said at least one non-carbon thermal energy source is used to reduce an electrical need of the coal processing plant; and a coal-fired power plant configured to combust the increased energy density beneficiated coal thereby producing electricity on demand at an increased efficiency with reduced carbon dioxide emissions from the plant. ... Cree Inc

03/01/18 / #20180057763

Methods and systems for decreasing emissions of carbon dioxide from coal-fired power plants

Methods and systems for reducing carbon dioxide emissions from a coal-fired power plant by using electrical energy from a renewable energy source to increase the energy density in a beneficiated coal are provided. The system includes at least one renewable energy source; a coal processing plant, wherein the renewable energy source is configured to power a coal beneficiation process; and a coal-fired power plant to combust beneficiated coal to produce electricity on demand with decreased emissions. ... Cree Inc

02/15/18 / #20180045875

Luminaire utilizing waveguide

An optical waveguide comprising orthogonal x- and y-dimensions and developing an illumination distribution pattern comprising orthogonal x- and y-extents, comprising at least one coupling feature for directing light into the waveguide, at least one light redirection feature for redirecting light in an x-y plane within the waveguide, and at least one light extraction feature for extracting light out of the waveguide in an illumination pattern comprising at least one of the x- and y-extents that is offset with respect to the x- and y-dimensions, respectively. Additionally, the optical waveguide comprises optical features on at least first, second, and third sides thereof.. ... Cree Inc

02/15/18 / #20180045381

Lighting devices that comprise one or more solid state light emitters

Light engine modules comprise a support member and a solid state light emitter, in which (1) the emitter is mounted on the support member, (2) a region of the support member has a surface with a curved cross-section, (3) the emitter and a compensation circuit are mounted on the support member, (4) an electrical contact element extends to at least two surfaces of the support member, and/or (5) a substantial entirety of the module is located on one side of a plane and the emitter emits light into another side of the plane. Also, a module comprising means for supporting a light emitter and a light emitter. ... Cree Inc

02/15/18 / #20180043960

Headset with damping features

Headsets and head tube assemblies for vehicles are provided. A vehicle includes a steerer tube and a head tube. ... Cree Inc

02/08/18 / #20180042092

Light fixture control

A fixture configuration module comprises range control circuitry and fixture control circuitry. The range control circuitry is configured to store a range of a lighting parameter. ... Cree Inc

02/08/18 / #20180041681

Solid state lighting fixtures and image capture systems

An led-based lighting fixture sets or adjusts a parameter of a drive signal that is used to drive its leds to be more compatible with the camera system; the camera system sets or adjusts an image capture parameter to be more compatible with the led-based lighting fixture, or a combination thereof. The drive signal may be a pwm signal with a variable pwm frequency and/or duty cycle, a variable dc signal, or any combination thereof. ... Cree Inc

02/01/18 / #20180035506

Led luminaire

An outdoor luminaire comprises a housing adapted to be mounted on an outdoor structure, an input disposed in the housing that receives ac power, and at least one rectification element coupled to the input and which produces rectified ac electrical power comprising a plurality of cycles. At least one led driver circuit is coupled to the at least one rectification element and a plurality of leds is coupled to the at least one led driver circuit. ... Cree Inc

02/01/18 / #20180033924

Light emitting diodes, components and related methods

Light emitting diodes, components, and related methods, with improved performance over existing light emitting diodes. In some embodiments light emitter devices included herein include a submount, a light emitter, a light affecting material, and a wavelength conversion component. ... Cree Inc

01/25/18 / #20180026437

Vehicle accessory power switch

An electrical switch for providing power from a power source to a component may include a voltage supervisor having an input and an output, a voltage divider, electrically coupled between the input of the voltage supervisor and ground, an rc filter electrically coupled to the output of the voltage supervisor, and a field-effect transistor having a first terminal coupled to the rc filter and a second terminal coupled to an output of the switch, the output configured to be electrically coupled to the component. A switch may additionally or alternatively include a light source electrically that emits light when power is provided from the input of the switch to the component, the light source arranged proximate a fuse so as to illuminate the fuse.. ... Cree Inc

01/18/18 / #20180014563

Method and system for making protein loaf, and protein loaf

A method for making a protein loaf, which may take the form of whole-muscle poultry, beef, pork, or veal, may include coating at least a portion of at least one of two pieces of protein with a bonding enzyme preparation along a bonding surface of one of the pieces; nesting the two pieces of protein in a mold and orienting the pieces such the coated bonding surface contacts a bonding surface of the other of the two pieces of protein; evacuating and sealing the pieces in a package such that the pieces are urged together along the bonding surfaces thereof and conform to the mold to form a loaf shape; and holding the pieces in the sealed package a time interval sufficient to allow the bonding enzyme preparation to cause cross-linking to occur between the bonding surfaces to form a unitary protein loaf from the two pieces of protein.. . ... Cree Inc

01/18/18 / #20180014521

Expandable portable tackle container and tippet dispensing method and device

The present disclosure relates to methods and device for carrying fishing equipment and accessories and for dispensing tippet or leader from a tackle container. In at least one embodiment the portable container comprises a first housing and a second housing that are pivotably connected. ... Cree Inc

01/11/18 / #20180014394

Master/slave arrangement for lighting fixture modules

The present disclosure relates to a lighting fixture that includes a driver module and at least one other module that provides a lighting fixture function, such as a sensor function, lighting network communication function, gateway function, and the like. The driver module communicates with the other modules in a master/slave scheme over a communication bus. ... Cree Inc

01/11/18 / #20180012874

Solid state light fixtures suitable for high temperature operation having separate blue-shifted-yellow/green and blue-shifted-red emitters

Solid state light fixtures include a plurality of blue-shifted-yellow/green light emitting diode (“led”) packages and a plurality of blue-shifted-red led packages, where the solid state light fixture emits light having a correlated color temperature of between 1800 k and 5500 k, a cri value of between 80 and 99, a cri r9 value of between 15 and 75, and a qg value of between 90 and 110 when the blue-shifted-yellow/green led packages and the blue-shifted-red led packages are operating at steady-state operating temperatures of at least 80° c.. . ... Cree Inc

01/11/18 / #20180007872

Beekeeping systems, apparatus, and methods

A beekeeping apparatus includes a bottom side having an arcuate groove defined therein, the arcuate groove being sized and dimensioned to correspond to the rim of a repository; and a top side including a recessed area defined therein, the recessed area being sized and dimensioned to correspond to a beekeeping frame, and a plurality of generally rectangular openings defined through the recessed area, the rectangular openings each being sized and dimensioned to receive and retain a portion of a beekeeping frame, and collectively being sized and dimensioned to receive and retain portions of different sizes of beekeeping frames.. . ... Cree Inc

01/04/18 / #20180005999

Multiple pixel surface mount device package

Emitter packages and leds displays utilizing the packages are disclosed, with the packages providing advantages such as reducing the cost and interconnect complexity for the packages and displays. One emitter package comprises a casing with a plurality of cavities, each cavity having at least one led. ... Cree Inc

12/28/17 / #20170374724

Led lighting device with communications module and antenna

A led lighting device includes leds operable to emit light when powered through an electrical path. The led lighting device includes a housing and a communications module for wireless communication to and from the led lighting device. ... Cree Inc

12/28/17 / #20170374718

Dimming control for led-based luminaires

A pwm dimmer includes a source terminal, a load terminal, a power stage, an interface, and control circuitry. The power stage is coupled between the source terminal and the load terminal and is configured to receive from the source terminal an ac supply signal and provide a pulsed ac load signal to the load terminal in response to a control signal. ... Cree Inc

12/28/17 / #20170373684

High reliability ac load switching circuit

A high reliability ac load switching circuit is disclosed. In some embodiments, the ac load switching circuit includes a high-speed switch connected between the load and the voltage source, a cutoff switch connected between the load and the voltage source in parallel with the high-speed switch, and a level detector connected to the voltage source and to a control input of the high-speed switch. ... Cree Inc

12/28/17 / #20170373496

Auxiliary supply generation for power converters

A power converter may be configured to power multiple output loads, including a main output load and at least one auxiliary output load. The power converter may include control circuitry that controls power delivery to output circuits coupled to the output loads. ... Cree Inc

12/28/17 / #20170373179

Depletion mode semiconductor devices including current dependent resistance

A transistor device is provided. The transistor device includes a substrate, a channel layer on the substrate, the channel layer including a gan material, a barrier layer that is on the channel layer and that includes an algan material, a drain electrode that is on the barrier layer in a drain region of the device, a source ohmic structure that is at least partially recessed into the barrier layer in a source region of the device, a source electrode that is on the source ohmic structure and a gate contact that is on the barrier layer and that is in a gate region of the device that is between the drain region and the source region.. ... Cree Inc

12/28/17 / #20170373178

Gallium nitride high-electron mobility transistors with deep implanted p-type layers in silicon carbide substrates for power switching and radio frequency applications and process for making the same

The disclosure is directed to a high-electron mobility transistor that includes a sic substrate layer, a gan buffer layer arranged on the sic substrate layer, and a p-type material layer having a length parallel to a surface of the sic substrate layer over which the gan buffer layer is provided. The p-type material layer is provided in one of the following: the sic substrate layer and a first layer arranged on the sic substrate layer. ... Cree Inc

12/28/17 / #20170373176

Gallium nitride high-electron mobility transistors with p-type layers and process for making the same

A high-electron mobility transistor includes a substrate layer, a first buffer layer provided on the substrate layer, a barrier layer provided on the first buffer layer, a source provided on the barrier layer, a drain provided on the barrier layer, and a gate provided on the barrier layer. The transistor further includes a p-type material layer having a length parallel to a surface of the substrate layer over which the first buffer layer is provided, the length of the p-type material layer being less than an entire length of the substrate layer. ... Cree Inc

12/28/17 / #20170373045

Light emitter components and related methods

Light emitter components and related methods are provided. In some aspects, light emitter components and related methods include a ceramic submount having a reflective surface. ... Cree Inc

12/28/17 / #20170370553

Light fixture and optic with light-transmissive shield

A light-emitting arrangement including an optical member and a light-transmissive shield member secured with respect to the optical member at least partially defines a light-fixture exterior and having a back side facing a circuit board and receiving a gasket which encircles the circuit board to provide water seal thereabout. The gasket had a pair of spaced apart outwardly-extending lateral fingers engaging lateral sides of a recess formed by the optical-member back side, and at least one inner finger extending into the recess offset from the recess lateral sides. ... Cree Inc

12/28/17 / #20170368857

Systems and methods for providing an ink pad

While the described ink pad can include any suitable component, in some cases it includes a lid, a base, and an absorbent material. Additionally, in some cases, the lid and the base define a cavity that houses the absorbent material and the lid and the base each comprise one or more magnets and/or magnetic materials that are configured to magnetically couple with each other to releasably couple the lid and base together. ... Cree Inc

12/28/17 / #20170367401

Smoking pen

A smoking pen device is disclosed. An example smoking pen device includes a stem having an inlet end and an outlet end. ... Cree Inc

12/21/17 / #20170365670

Wide bandgap field effect transistors with source connected field plates

A field effect transistor comprising a buffer and channel layer formed successively on a substrate. A source electrode, drain electrode, and gate are all formed in electrical contact with the channel layer, with the gate between the source and drain electrodes. ... Cree Inc

12/21/17 / #20170363795

Bonded optical systems and applications thereof

In view of delamination and other failure mechanisms, bonded assemblies are described herein comprising one or more reinforcement members reducing deflection of the assemblies under applied flexural loads, wherein the reinforcement members do not materially interfere with the functionality of the bonded assemblies. In one aspect, waveguide assemblies are provided. ... Cree Inc

11/30/17 / #20170345891

Super junction power semiconductor devices formed via ion implantation channeling techniques and related methods

Semiconductor devices include a silicon carbide drift region having an upper portion and a lower portion. A first contact is on the upper portion of the drift region and a second contact is on the lower portion of the drift region. ... Cree Inc

11/30/17 / #20170345866

Substrate based light emitter devices, components, and related methods

Substrate based light emitter devices, components, and related methods are disclosed. In some aspects, light emitter components can include a substrate and a plurality of light emitter devices provided over the substrate. ... Cree Inc

11/23/17 / #20170336563

Waveguide-based light sources with dynamic beam shaping

Luminaires are described herein employing waveguides and associated architectures for dynamic alteration of illuminance distribution patterns. In one aspect, a luminaire described herein comprises a waveguide body and light sources having differing angular positions relative to the waveguide body for altering illuminance distribution patterns of the luminaire according to one or more activation patterns of the light sources. ... Cree Inc

11/23/17 / #20170336554

Optical waveguide and lamp including same

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. ... Cree Inc

11/16/17 / #20170330097

Discovery systems for identifying entities that have a target property

Systems and methods for assaying a test entity for a property, without measuring the property, are provided. Exemplary test entities include proteins, protein mixtures, and protein fragments. ... Cree Inc

11/09/17 / #20170325311

Solid state lighting apparatus with electrical connectors including portions of driver circuits

A solid state lighting apparatus can include an electrical connector that is configured to releasably couple to a standardized electrical fixture having ac voltage provided thereat, where the electrical connector includes an opening that is configured to provide a recess in the electrical connector including an interior contact to provide the ac voltage in the recess when connected to the standardized electrical fixture. A protective circuit stage of a solid state lighting driver circuit can be in the recess to electrically coupled to the interior contact. ... Cree Inc

11/09/17 / #20170322364

Luminaire with controllable light emission

A luminaire includes a first waveguide having a first primary light emitting surface directed in a first direction and a first secondary light emitting surface directed in a second direction. A second waveguide having a second primary light emitting surface directed in the second direction and a second secondary light emitting surface directed in the first direction. ... Cree Inc

10/26/17 / #20170309778

High voltage monolithic led chip

Monolithic led chips are disclosed comprising a plurality of active regions on submount, wherein the submount comprises integral electrically conductive interconnect elements in electrical contact with the active regions and electrically connecting at least some of the active regions in series. The submount also comprises an integral insulator element electrically insulating at least some of the interconnect elements and active regions from other elements of the submount. ... Cree Inc

10/12/17 / #20170294418

High density pixelated led and devices and methods thereof

At least one array of leds (e.g., in a flip chip configuration) is supported by a substrate having a light extraction surface overlaid with at least one lumiphoric material. Light segregation elements registered with gaps between leds are configured to reduce interaction between emissions of different leds and/or lumiphoric material regions to reduce scattering and/or optical crosstalk, thereby preserving pixel-like resolution of the resulting emissions. ... Cree Inc

10/12/17 / #20170294417

High density pixelated led and devices and methods thereof

At least one array of leds (e.g., in a flip chip configuration) is supported by a substrate having a light extraction surface overlaid with at least one lumiphoric material. Light segregation elements registered with gaps between leds are configured to reduce interaction between emissions of different leds and/or lumiphoric material regions to reduce scattering and/or optical crosstalk, thereby preserving pixel-like resolution of the resulting emissions. ... Cree Inc

10/05/17 / #20170284077

Removable catch basin filter insert and lifting apparatus

A removable catch basin filter insert includes a filter container is fitted into a catch basin in the ground at the location where the stormwater exits the gutter and enters the stormwater sewer system. The removable catch basin filter provides pollution capture from stormwater while being easily cleaned. ... Cree Inc

09/21/17 / #20170271561

Wafer level packaging of multiple light emitting diodes (leds) on a single carrier die

An led wafer includes led dies on an led substrate. The led wafer and a carrier wafer are joined. ... Cree Inc

09/21/17 / #20170271497

Bypassed gate transistors having improved stability

A transistor includes a plurality of gate fingers that extend in a first direction and are spaced apart from each other in a second direction, each of the gate fingers comprising at least spaced-apart and generally collinear first and second gate finger segments that are electrically connected to each other. The first gate finger segments are separated from the second gate finger segments in the first direction by a gap region that extends in the second direction. ... Cree Inc

09/21/17 / #20170271329

Transistor with bypassed gate structure field

A transistor device includes a source contact extending in a first direction, a gate finger extending in the first direction adjacent the source contact, and a drain contact adjacent the gate finger, wherein the gate finger is between the drain contact and the source contact. The device further includes a gate jumper extending in the first direction, a gate bus connected to the gate jumper and the gate finger, and a gate signal distribution bar that is spaced apart from the gate bus in the first direction and that connects the gate jumper to the gate finger.. ... Cree Inc

09/21/17 / #20170271258

High power mmic devices having bypassed gate transistors

Monolithic microwave integrated circuits are provided that include a substrate having a transistor and at least one additional circuit formed thereon. The transistor includes a drain contact extending in a first direction, a source contact extending in the first direction in parallel to the drain contact, a gate finger extending in the first direction between the source contact and the drain contact and a gate jumper extending in the first direction. ... Cree Inc

09/21/17 / #20170265505

Functional adzuki bean-derived compositions

Provided herein are methods for producing an adzuki bean protein isolate having high functionality for a broad range of food applications. In some embodiments, the methods for producing the isolate comprise one or more steps selected from: (a) extracting one or more adzuki bean proteins from an adzuki bean protein source in an aqueous solution, for example, at a ph between about 6.5-10.0; (b) purifying protein from the extract using at least one of two methods: (i) precipitating protein from the extract at a ph near the isoelectric point of a globulin-rich fraction, for example a ph between about 5.0-6.0; and/or (ii) fractionating and concentrating protein from the extract using filtration such as microfiltration, ultrafiltration or ion-exchange chromatography; and (c) recovering purified protein isolate.. ... Cree Inc

09/14/17 / #20170263713

Power module for supporting high current densities

A power module is disclosed that includes a housing with an interior chamber wherein multiple switch modules are mounted within the interior chamber. The switch modules comprise multiple transistors and diodes that are interconnected to facilitate switching power to a load. ... Cree Inc

09/07/17 / #20170256689

Lighting device and method of making lighting device

A lighting device comprises a solid state light emitter on a circuit board, and an optic held in place relative to the first circuit board, a voltage drop across the emitter at least 60 volts. A lighting device comprises a solid state light emitter on a first circuit board, an optic held in place relative to the first circuit board, and a non-isolated power supply. ... Cree Inc

09/07/17 / #20170254110

Fence slat and fence slat locking system

This disclosure generally relates to a fence slat and a fence slat interlocking system. The fence slat includes a first fence slat locking mechanism disposed on one side of the fence slat. ... Cree Inc

08/24/17 / #20170238590

Functional mung bean-derived compositions

Provided herein are methods for producing a mung bean protein isolate having high functionality for a broad range of food applications. In some embodiments, the methods for producing the isolate comprise one or more steps selected from: (a) extracting one or more mung bean proteins from a mung bean protein source in an aqueous solution, for example, at a ph between about 6.5-10.0; (b) purifying protein from the extract using at least one of two methods: (i) precipitating protein from the extract at a ph near the isoelectric point of a globulin-rich fraction, for example a ph between about 5.0-6.0; and/or (ii) fractionating and concentrating protein from the extract using filtration such as microfiltration, ultrafiltration or ion-exchange chromatography; and (c) recovering purified protein isolate.. ... Cree Inc

08/17/17 / #20170233887

Methods of producing a semiconductor with decreased oxygen contamination and impurities

A method for manufacturing a semiconductor for a solar cell and other applications is disclosed. A separating layer may be introduced into a mold having an interior defining a shape of a solar cell or other substantially planer object. ... Cree Inc

08/10/17 / #20170231066

Automatic mapping of devices in a distributed lighting network

A method includes the steps of obtaining distance measurements between a device and a number of lighting fixtures, processing the distance measurements to assign coordinates to each one of the lighting fixtures, and facilitating registration of the coordinates of a subset of the lighting fixtures to obtain registered coordinates for all of the lighting fixtures. The coordinates indicate a relative location of each one of the lighting fixtures with respect to one another. ... Cree Inc

08/10/17 / #20170231061

Modular lighting fixture

A lighting fixture includes a solid-state light source, a fixture common bus, a driver module, and a control module. The fixture common bus is configured to receive at least one functional module and provide an input signal from the at least one functional module to one or more other modules. ... Cree Inc

08/10/17 / #20170231060

Lighting fixture with improved power management

A lighting fixture includes a solid-state light source, communications circuitry, and control circuitry coupled to the communications circuitry and the solid-state light source. The control circuitry is configured to receive a message from a neighboring device via the communications circuitry, the message indicating the detection of an occupancy event by the neighboring device. ... Cree Inc

08/10/17 / #20170231053

Led lighting device with adaptive profiles for controlling power consumption

A lighting device system includes light emitters where a battery powers the light emitters. A battery supplies the power for powering the light emitters and a driver is arranged to selectively power the light emitters to adjust an operating parameter of the at least one light emitter based on the charge status of the battery. ... Cree Inc

08/10/17 / #20170231045

Solid state light fixtures having ultra-low dimming capabilities and related driver circuits and methods

A solid state light fixture includes a light emitting diode (led) load and a driver circuit that selectively provides one of a switched-mode drive current and a linear-mode drive current to the led load in response to a dimming control signal.. . ... Cree Inc

08/10/17 / #20170230364

Lighting fixture with enhanced security

A lighting fixture includes a solid-state light source, communications circuitry, a memory, and processing circuitry. The memory stores common security credentials, wherein the common security credentials are pre-installed during a factory calibration process. ... Cree Inc

08/10/17 / #20170229431

Wafer level packaging of light emitting diodes (leds)

An led wafer includes led dies on an led substrate. The led wafer and a carrier wafer are joined. ... Cree Inc

08/10/17 / #20170228874

Image analysis techniques

A frame is obtained from an image sensor. The frame may include a number of zones, each of which in turn includes a number of pixels. ... Cree Inc

08/10/17 / #20170227208

Led luminaire having enhanced thermal management

In one aspect, luminaires are described herein enabling independent thermal management of driver and led assemblies. For example, a luminaire comprises a driver assembly vertically integrated with a led assembly, the driver assembly comprising a driver heatsink having an interior in which a circuit board assembly is positioned, and the led assembly comprising an array of leds and led heatsink, wherein a barrier is positioned between the driver heatsink and the led heatsink, separating convective cooling of the driver assembly from convective cooling of the led assembly.. ... Cree Inc

08/10/17 / #20170227207

Led luminaire having enhanced thermal management

In one aspect, luminaires are described herein having sensor modules integrated therein. In one aspect, a luminaire described herein comprises a light emitting face including a led assembly. ... Cree Inc

08/10/17 / #20170227177

Led lamp with internal reflector

In a led lamp having an optically transmissive enclosure and a base connected to the enclosure a plurality of leds are operable to emit light when energized through an electrical path from the base. A reflector has an enclosed wall shape and is disposed such that leds are mounted inside of and outside of the reflector. ... Cree Inc

08/03/17 / #20170219762

Optical waveguides

A waveguide body comprises a body of optically transmissive material further comprising an input surface for light to enter the body of optically transmissive material along a light path. The body of optically transmissive material is curved and has an inflection region that extends transverse to the light path.. ... Cree Inc

07/27/17 / #20170213811

High performance power module

The present disclosure relates to a power module that has a housing with an interior chamber and a plurality of switch modules interconnected to facilitate switching power to a load. Each of the plurality of switch modules comprises at least one transistor and at least one diode mounted within the interior chamber and both the at least one transistor and the at least one diode are majority carrier devices, are formed of a wide bandgap material system, or both. ... Cree Inc

07/27/17 / #20170212291

Optical waveguide bodies and luminaires utilizing same

A luminaire comprises an optical element. The optical element comprises a coupling portion that comprises a coupling cavity that extends along a length of the optical element. ... Cree Inc

07/20/17 / #20170205567

Luminaires utilizing edge coupling

A luminaire includes at least first and second waveguides. The first waveguide has a first coupling surface extending between a first surface and a second surface opposite the first surface, and the second waveguide has a second coupling surface extending between a third surface and a fourth surface opposite the third surface. ... Cree Inc

07/13/17 / #20170198493

Concealed screw handleset

An improved concealed screw handleset for a door is described. The handleset assembly has a handleset, a mounting plate, and a face plate. ... Cree Inc

07/06/17 / #20170194298

Illumination devices, and methods of fabricating same

A light emitter, comprising a monolithic n-type layer (comprising at least first and second n-type regions), a monolithic p-type layer (comprising at least first and second p-type regions), at least a first isolation region and at least a first electrically conductive via that extends through at least part of the first isolation region. At least part of the first isolation region is between the first n-type region and the second n-type region, and/or least part of the first isolation region is between the first p-type region and the second p-type region.. ... Cree Inc

07/06/17 / #20170188611

System and method for cooking pieces of protein

A system for cooking pieces of protein may include a flour applicator that receives the pieces of protein in an uncooked state and applies a coating of flour to outer surfaces thereof; a batter applicator that receives the pieces of uncooked protein coated with the flour from the flour applicator and applies a batter made from high-gluten flour to the coated outer surfaces thereof; a packaging machine that receives the pieces of uncooked protein coated with the batter made from the high-gluten flour from the batter applicator and seals the pieces of protein in plastic pouches; and a heating unit that receives the sealed plastic pouches containing the uncooked protein coated with the batter from the packaging machine and cooks the battered protein pieces in the plastic pouches.. . ... Cree Inc

06/29/17 / #20170186913

Formation of nitride-based optoelectronic and electronic device structures on lattice-matched substrates

A method of forming an alingan alloy-based electronic or optoelectronic device structure on a nitride substrate and subsequent removal of the substrate. An alingan alloy-based electronic or optoelectronic device structure formed on a nitride substrate is freed from the substrate on which it was grown.. ... Cree Inc

06/29/17 / #20170186317

System and method for determining parking infraction

Various embodiments are described herein for methods and systems for managing a parking area. In one embodiment, the method comprises receiving a parking authorization request from a parking lot user, the request specifying a parking stall identifier corresponding to a parking stall occupied by the user's vehicle, the request further specifying a parking duration parameter identifying a time duration the user's vehicle can occupy the stall; determining a parking duration rule for the stall based on the parking duration parameter, the rule indicating a parking expiration time; at a first time, receiving a first data associated with the parking stall identifier, the first data comprising an occupancy parameter indicating a presence or absence of a parked vehicle at the identified stall; if the occupancy parameter indicates a presence of a parked vehicle, generate a citation alert for the stall if the first time exceeds the parking expiration time.. ... Cree Inc

06/22/17 / #20170179088

Wire bond free wafer level led

A wire-bond free semiconductor device with two electrodes both of which are accessible from the bottom side of the device. The device is fabricated with two electrodes that are electrically connected to the oppositely doped epitaxial layers, each of these electrodes having leads with bottom-side access points. ... Cree Inc

06/22/17 / #20170176666

Optical waveguide body

An optical waveguide body includes a first layer of optically transmissive material and a second layer of optically transmissive material in contact with the first layer. At least one of the first and second layers is tapered and the first layer has a first index of refraction and the second layer has a second index of refraction less than the first index of refraction and the first and second indices of refraction are both greater than about 1.0.. ... Cree Inc

06/15/17 / #20170168221

Outdoor and/or enclosed structure led luminaire

A luminaire with a plurality of optical waveguides disposed in side-by-side relationship, together at least partially defining a closed path, and a plurality of optical coupling portions disposed adjacent to the optical waveguides. Further, each optical coupling portion is associated with one of the optical waveguides, and each coupling portion includes a refractive portion and a pair of reflective portions disposed on opposite sides of the refractive portion. ... Cree Inc

06/08/17 / #20170162547

Solid state light fixtures suitable for high temperature operation having separate blue-shifted-yellow/green and blue-shifted-red emitters

Solid state light fixtures include a plurality of blue-shifted-yellow/green light emitting diode (“led”) packages and a plurality of blue-shifted-red led packages, where the solid state light fixture emits light having a correlated color temperature of between 1800 k and 5500 k, a cri value of between 80 and 99, a cri r9 value of between 15 and 75, and a qg value of between 90 and 110 when the blue-shifted-yellow/green led packages and the blue-shifted-red led packages are operating at steady-state operating temperatures of at least 80° c.. . ... Cree Inc

06/08/17 / #20170159892

Lighting devices that comprise one or more solid state light emitters

Light engine modules comprise a support member and a solid state light emitter, in which (1) the emitter is mounted on the support member, (2) a region of the support member has a surface with a curved cross-section, (3) the emitter and a compensation circuit are mounted on the support member, (4) an electrical contact element extends to at least two surfaces of the support member, and/or (5) a substantial entirety of the module is located on one side of a plane and the emitter emits light into another side of the plane. Also, a module comprising means for supporting a light emitter and a light emitter. ... Cree Inc

06/08/17 / #20170156377

System and method for cooking pieces of protein

A system for cooking pieces of protein may include a batter applicator that receives a batter made from high-gluten flour and coats the batter on pieces of protein, a thermoforming packaging machine that receives the pieces of protein coated with the batter from the batter applicator and seals the pieces of protein in plastic pouches, and a heating unit that receives the plastic pouches from the thermoforming packaging machine and cooks the battered protein in the plastic pouches. A method for cooking pieces of protein may include coating a batter made from high-gluten flour on the pieces of protein; sealing the pieces of protein coated with the batter in plastic pouches; and cooking the battered protein in the plastic pouches to make cooked, battered protein pieces in which the batter is tacky after cooking. ... Cree Inc

06/01/17 / #20170156211

Method and device for a high temperature vacuum-safe solder stop utilizing laser processing of solderable surfaces for an electronic module assembly

A process for manufacturing an electronic component having attaches includes providing a first component having a first attach, forming trenches on a portion of the first attach with a laser to form a solder stop, and providing a second component comprising a second attach. The process further includes providing solder between the first attach and the second attach to form a connection between the first component and the second component, where the trenches contain the solder to a usable area. ... Cree Inc

06/01/17 / #20170155026

Light emitting diode (led) components including multiple led dies that are attached to lead frames

A light emitting diode (led) component includes a lead frame and an led that is electrically connected to the lead frame without wire bonds, using a solder layer. The lead frame includes a metal anode pad, a metal cathode pad and a plastic cup. ... Cree Inc

05/18/17 / #20170138498

Valve pressure assembly and methods of operating the same

A valve pressure assembly for pressurizing an actuating mechanism of a thief hatch is provided. The valve pressure assembly includes a pressure bar comprising a first end, a second end, and a body located between the first end and the second end; a connector coupled to the body and configured to removably couple to the actuating mechanism; and a clamp coupled to at least one of the first end and the second end, the clamp comprising a fastener removably coupled to the relief valve, wherein the fastener is configured to adjustably move the pressure bar and the connector in contact with the actuating mechanism to facilitate pressuring the actuating mechanism to remain in an operative position.. ... Cree Inc

05/11/17 / #20170131452

Waveguide having unidrectional illuminance

A luminaire includes an optical waveguide having a first surface and a second surface opposite the first surface, and a light source associated with the optical waveguide. At least about 80% of light produced by the light source is directed by the waveguide into an illumination distribution emitted from the first surface of the optical waveguide.. ... Cree Inc

05/04/17 / #20170127492

Lighting fixture with image sensor module

A lighting fixture includes a control system, a light source, and an image sensor module. The image sensor module is configured to capture image data and process the image data to provide derived image data, such that the derived image data is downsampled from the image data. ... Cree Inc

05/04/17 / #20170127491

Ambient light sensor circuit

Ambient light sensor circuitry includes a photodetector, a controllable current source, and control circuitry. The photodetector is coupled between a supply voltage and an intermediate node and configured to provide a photodetector current proportional to an amount of light detected thereby to the intermediate node. ... Cree Inc

05/04/17 / #20170125805

Porous sintered superstructure with interstitial silicon for use in anodes for lithium batteries

Anodes for the lithium secondary batteries include a strong, electrically conductive, porous superstructure filled with a milled or melted interstitial material, such as nano-scaled silicon; the milled or melted interstitial material provides high lithiation capacity, and the superstructure provides durability and controls the anode's electromechanical expansion and contraction during the lithiation and de-lithiation cycle. Embodiments include porous superstructures comprised of silicon carbide, tungsten, and other materials, many of which offer capability of lithiating.. ... Cree Inc

04/20/17 / #20170112005

High voltage power module

A power module includes a number of sub-modules connected via removable jumpers. The removable jumpers allow the connections between one or more power semiconductor die in the sub-modules to be reconfigured, such that when the removable jumpers are provided, the power module has a first function and when the removable jumpers are removed, the power module has a second function. ... Cree Inc

04/20/17 / #20170111970

Solid state lighting switches and fixtures providing dimming and color control

A solid state lighting switch can include a first input control that can be configured to adjust a dimming indication or color indication for a solid state lighting fixture that is configured for coupling to the solid state lighting switch. A selective linking mechanism can be configured to activate a linked mode of operation of the switch to link the dimming indication to the color indication or to activate an unlinked mode of operation of the switch to unlink the dimming indication from the color indication.. ... Cree Inc

04/06/17 / #20170098746

Low optical loss flip chip solid state lighting device

Flip chip leds incorporate multi-layer reflectors and light transmissive substrates patterned along an internal surface adjacent to semiconductor layers. A multi-layer reflector may include a metal layer and a dielectric layer containing conductive vias. ... Cree Inc

04/06/17 / #20170096469

Bi-specific therapeutic proteins for tissue repair

Bi-specific fusion proteins with therapeutic uses are provided, as well as pharmaceutical compositions comprising such fusion proteins, and methods for using such fusion proteins to repair or regenerate damaged or diseased tissue.. . ... Cree Inc

03/30/17 / #20170092715

Field effect transistor devices with buried well protection regions

A method of forming a transistor device includes providing a drift layer having a first conductivity type, forming a first region in the drift layer, the first region having a second conductivity type that is opposite the first conductivity type, forming a body layer on the drift layer including the first region, forming a source layer on the body layer, forming a trench in the source layer and the body layer above the first region and extending into the first region, forming a gate insulator on the inner sidewall of the trench, and forming a gate contact on the gate insulator.. . ... Cree Inc

03/30/17 / #20170091637

Discovery systems for identifying entities that have a target property

Systems and methods for assaying a test entity for a property, without measuring the property, are provided. Exemplary test entities include proteins, protein mixtures, and protein fragments. ... Cree Inc

03/23/17 / #20170084700

Methods of forming buried junction devices in silicon carbide using ion implant channeling and silicon carbide devices including buried junctions

A semiconductor device structure according to some embodiments includes a silicon carbide substrate having a first conductivity type, a silicon carbide drift layer having the first conductivity type on the silicon carbide substrate and having an upper surface opposite the silicon carbide substrate, and a buried junction structure in the silicon carbide drift layer. The buried junction structure has a second conductivity type opposite the first conductivity type and has a junction depth that is greater than about one micron.. ... Cree Inc

03/23/17 / #20170082269

Optical components for luminaire

An optical component has an elongate length extending between first and second ends and a width transverse to and substantially smaller than the length and extending between first and second sides. The optical component includes a refractive portion disposed between the first and second sides and extending along the length between the first and second ends, and a plurality of separate reflective portions. ... Cree Inc

03/16/17 / #20170077833

Dual mode power supply controller with charge balance multipliers and charge balance multiplier circuits

A circuit for generating an output current includes a control signal generating circuit that is configured to generate a control signal. The control signal is a function of a level of an analog input voltage signal, and a level of the output current is a function of a level of an analog input current signal and the level of the analog input voltage signal.. ... Cree Inc

03/16/17 / #20170077254

Ohmic contact structure for group iii nitride semiconductor device having improved surface morphology and well-defined edge features

Embodiments of an ohmic contact structure for a group iii nitride semiconductor device and methods of fabrication thereof are disclosed. In general, the ohmic contact structure has a root-mean-squared (rms) surface roughness of less than 10 nanometers, and more preferably less than or equal to 7.5 nanometers, and more preferably less than or equal to 5 nanometers, and more preferably less than or equal to 2 nanometers, and even more preferably less than or equal to 1.5 nanometers.. ... Cree Inc

03/09/17 / #20170069606

Light emitting diodes, components and related methods

Light emitting diode (led) devices, components and systems are provided. Led devices include a submount with a plurality of leds disposed thereon. ... Cree Inc

02/23/17 / #20170053987

Transistor structures having reduced electrical field at the gate oxide and methods for making same

A transistor device having reduced electrical field at the gate oxide interface is disclosed. In one embodiment, the transistor device comprises a gate, a source, and a drain, wherein the gate is at least partially in contact with a gate oxide. ... Cree Inc

02/16/17 / #20170048952

Wireless-enabled lighting fixture

A lighting management system includes communications circuitry, processing circuitry, and a memory. The memory stores instructions, which, when executed by the processing circuitry cause the lighting management system to receive a message from a lighting fixture via the communications circuitry, the message indicating a proximal presence of a detected mobile device to the lighting fixture, and performing one or more actions in response to receipt of the message. ... Cree Inc

02/16/17 / #20170048950

Lighting fixture sensor network

A lighting fixture includes a light source, a housing coupled to the light source, communications circuitry, and control circuitry. The housing includes an opening through which light from the light source is provided. ... Cree Inc

02/16/17 / #20170048949

Lighting fixture sensor network

A lighting fixture includes a light source, a housing coupled to the light source, communications circuitry, sensor circuitry, and control circuitry. The housing includes an opening through which light from the light source is provided. ... Cree Inc

02/16/17 / #20170047396

Power semiconductor devices having superjunction structures with implanted sidewalls and methods of fabricating such devices

A semiconductor device has a drift region having an upper surface and a lower surface. A first contact is on the upper surface of the drift region and a second contact is on the lower surface of the drift region. ... Cree Inc

02/16/17 / #20170042204

Plant-based egg substitute and method of manufacture

Disclosed herein are non-egg compositions that can be used as egg substitutes. The disclosure is directed to egg substitutes and methods of manufacturing the same, and compositions comprising the egg substitutes, including edible compositions such as baked goods and edible emulsions.. ... Cree Inc

02/09/17 / #20170040890

High speed, efficient sic power module

A power converter module includes a baseplate, a substrate on the baseplate, one or more silicon carbide switching components on the substrate, and a housing over the baseplate, the substrate, and the one or more silicon carbide switching components. The housing has a footprint less than 25 cm2. ... Cree Inc

02/02/17 / #20170033749

Bias circuits and methods for depletion mode semiconductor devices

A radio frequency (rf) amplifier includes a depletion mode semiconductor device having a gate, a bias device and an inverting circuit. The depletion mode semiconductor device may be a hemt and/or a mesfet. ... Cree Inc

02/02/17 / #20170031085

Luminaires utilizing optical waveguide

A lighting device comprises a body of optically transmissive material exhibiting a total internal reflection characteristic, the body further comprising a light input surface for receiving light, a light extraction portion spaced from the light input surface, a light transmission portion disposed between the light input surface and the light extraction portion, and at least one light deflection surface for deflecting light toward the light extraction portion. Further in accordance with this aspect the light extraction portion comprises a first extraction surface for extracting light deflected by the at least one light deflection surface out of the body and a second extraction surface for extracting light other than light deflected by the at least one light deflection surface out of the body.. ... Cree Inc

02/02/17 / #20170030529

Small form-factor led lamp with color-controlled dimming

A small form factor led lighting system provides for color-controlled dimming. Embodiments of the invention use one or more small-footprint led(s) that can emit light of different correlated color temperatures (ccts, colors or spectral outputs). ... Cree Inc

01/26/17 / #20170027033

Lighting apparatus using multiple led strings with current mirror circuitry and methods of operating same

Lighting apparatus includes a first string of light-emitting diodes (leds) having a first terminal coupled to a current source and configured to produce a first correlated color temperature (cct) and a second string of leds having a first terminal coupled to the current source and configured to produce a second cct different from the first cct. The lighting apparatus further includes a current control circuit coupled to second terminals of the first and second strings of leds and configured to vary a proportionality relationship between current levels in the first and second strings of leds responsive to variation in a current provided by the current source to the first terminals of the first and second strings of leds. ... Cree Inc

01/26/17 / #20170025506

Fabrication of single or multiple gate field plates

A process for fabricating single or multiple gate field plates using consecutive steps of dielectric material deposition/growth, dielectric material etch and metal evaporation on the surface of a field effect transistors. This fabrication process permits a tight control on the field plate operation since dielectric material deposition/growth is typically a well controllable process. ... Cree Inc

01/19/17 / #20170018538

Solid state light emitter devices and methods

Solid state light emitter devices and methods are provided. A solid state light emitter device can include a submount having an upper surface and a bottom surface. ... Cree Inc

01/19/17 / #20170016583

Led lamp with high color rendering index

An led lamp with a high color rendering index (cri) is disclosed. Example embodiments of the invention provide an led lamp with a relatively high color rendering index (cri). ... Cree Inc

01/12/17 / #20170012177

Led based lighting system

An led lamp includes a base connected to an optically transmissive enclosure. An led assembly for emitting light when energized through an electrical path is in the enclosure. ... Cree Inc

01/12/17 / #20170012106

Method of forming vias in silicon carbide and resulting devices and circuits

A method of fabricating an integrated circuit on a silicon carbide substrate is disclosed that eliminates wire bonding that can otherwise cause undesired inductance. The method includes fabricating a semiconductor device including a group iii-v semiconductor layer on a surface on a silicon carbide substrate, wherein the semiconductor device defines at least one via through the silicon carbide substrate and the epitaxial layer.. ... Cree Inc

01/12/17 / #20170009971

Smart pixel surface mount device package

Emitter panels and displays utilizing solid state packages and methods for fabricating the same are disclosed. One emitter panel comprises a raised barrier on a submount defining a plurality of cavities, each cavity having at least one led in a pixel area. ... Cree Inc

01/12/17 / #20170009957

Linear led lighting system with controlled distribution

A linear led lighting system, assembly and/or fixture distributes luminance efficiently in certain applications, such as for ceiling lighting used in certain retail environments. According to example embodiments of the invention, a linear led lighting system includes at least two tilted, parabolic reflecting surfaces and a linear array of led devices, wherein at least some of the led devices are substantially disposed at a focus line of at least one of the tilted, parabolic reflecting surfaces. ... Cree Inc

01/05/17 / #20170006673

Control circuit for modulating an analog dimming command signal

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. ... Cree Inc

01/05/17 / #20170005386

Gyrotron whispering gallery mode coupler with phase correcting mirrors and launcher for direct coupling of rf into he11 waveguide

A cylindrical waveguide with a mode converter transforms a whispering gallery mode from a gyrotron cylindrical waveguide with a helical cut launch edge to a quasi-gaussian beam suitable for conveyance through a corrugated waveguide. This quasi-gaussian beam is radiated away from the waveguide using a spiral cut launch edge, which is in close proximity to a first mode converting reflector. ... Cree Inc

01/05/17 / #20170005241

Stabilized quantum dot structure and method of making a stabilized quantum dot structure

A stabilized quantum dot structure for use in a light emitting diode (led) comprises, according to one embodiment, a luminescent particle comprising one or more semiconductors, a buffer layer overlying the luminescent particle, where the buffer layer comprises an amorphous material, and a barrier layer overlying the buffer layer, where the barrier layer comprises oxygen, nitrogen and/or carbon. According to another embodiment, the stabilized quantum dot structure includes a luminescent particle comprising one or more semiconductors, and a treated buffer layer comprising amorphous silica overlying the luminescent particle, where the stabilized quantum dot structure exhibits a quantum yield of at least about 0.7 when exposed to a blue light flux of about 30 w/cm2 at a temperature of 80-85° c. ... Cree Inc








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