Patent application number | Description | Published |
20100002440 | Solid State Lighting Devices Including Light Mixtures - A solid state lighting apparatus includes a plurality of light emitting diodes (LEDs). Each of the LEDs includes an LED device configured to emit light having about a first dominant wavelength and a phosphor configured to receive at least some of the light emitted by the LED device and responsively emit light having about a second dominant wavelength. A combined light emitted by the LED device and the phosphor of a first one of the plurality of LEDs has a first color point and a combined light emitted by the LED device and the phosphor of a second one of the plurality of LEDs has a second color point that falls outside a seven step Macadam ellipse around the first color point. | 01-07-2010 |
20100079059 | Solid State Lighting Devices Including Light Mixtures - A solid state lighting apparatus includes a plurality of light emitting diodes (LEDs) including at least a first LED and a second LED. Chromaticities of the first and second LEDs are selected so that a combined light generated by a mixture of light from the pair of LEDs has about a target chromaticity. The first LED may include a first LED chip that emits light in the blue portion of the visible spectrum and a phosphor that emits red light in response to blue light emitted by the first LED chip. The second LED emits light having a color point that is above the planckian locus of a 1931 CIE Chromaticity diagram, and in particular may have a yellow green, greenish yellow or green hue. | 04-01-2010 |
20100140634 | SOLID STATE EMITTER PACKAGE INCLUDING RED AND BLUE EMITTERS - A solid state emitter package includes a principally red solid state emitter having peak emissions within 590 nm to 680 nm, a principally blue solid state emitter having peak emissions within 400 nm to 480 nm, and at least one of a common leadframe, common substrate, and common reflector, with the package being devoid of any principally green solid state emitters having peak emissions between 510 nm and 575 nm. A solid state emitter package may include at least one electrically conductive path associated with the solid state emitter package that is not in electrical communication with any solid state emitter of the solid state emitter package, with such electrically conductive path being susceptible to inclusion of a jumper or a control element. | 06-10-2010 |
20100301360 | LIGHTING DEVICES WITH DISCRETE LUMIPHOR-BEARING REGIONS ON REMOTE SURFACES THEREOF - A lighting device includes a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto, an element in adjacent, spaced-apart relationship with the LED, and a pattern of discrete lumiphor-containing regions on a surface of, or within, the element. The lumiphor-containing regions are configured to receive light emitted by the LED and convert at least a portion of the received light to light having a longer wavelength than the first peak wavelength. The remote element may be a lens, a reflective element, or a combination thereof. | 12-02-2010 |
20100314996 | HOT LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS AND METHODS - LED lighting systems operate their LED above a junction temperature of 85° C. and space apart from the LED, components of the LED lighting system that reduce an expected lifetime of the LED lighting system to less than 25,000 hours as a result of operating the LED above the junction temperature of 85° C. Accordingly, the LED itself may be driven hotter than is conventionally the case, without impacting its lifetime. By allowing the LED to operate hotter, reduced heat sinking may be needed for the LED itself, which can decrease the cost, size and/or complexity of the thermal management system for the LED lighting system and/or can allow a thermal budget for the LED lighting system to be used elsewhere. Related structures are also described. | 12-16-2010 |
20110006658 | SOLID STATE LIGHTING DEVICE WITH IMPROVED HEATSINK - A solid state lighting device includes at least one emitter and a forged heatsink arranged to receive and dissipate heat generated by emitter(s). The heatsink may have a thickness and/or profile that varies in at leats two dimensions. Fabrication of a solid state lighting device may include providing a forged heatsink, and mounting at least one solid state emitter in thermal communication with the heatsink. A space or object may be illuminated with a lighting device including at least one solid state emitter and a forged heatsink. The lighting device may be operated responsive to at least one sensor arranged to sense temperature and/or at least one characteric of light emitted by the emitter(s). | 01-13-2011 |
20110037413 | Solid State Lighting Devices Including Light Mixtures - A solid state lighting apparatus includes a plurality of light emitting diodes (LEDs). Each of the LEDs includes an LED device configured to emit light having about a first dominant wavelength and a phosphor configured to receive at least some of the light emitted by the LED device and responsively emit light having about a second dominant wavelength. A combined light emitted by the LED device and the phosphor of a first one of the plurality of LEDs has a first color point and a combined light emitted by the LED device and the phosphor of a second one of the plurality of LEDs has a second color point that falls outside a seven step Macadam ellipse around the first color point. | 02-17-2011 |
20110068696 | SOLID STATE LIGHTING APPARATUS WITH CONFIGURABLE SHUNTS - A solid state lighting apparatus according to some embodiments includes a circuit including a plurality of light emitting devices, and a configurable shunt configured to bypass at least some current around at least one light emitting device of the plurality of light emitting devices. The configurable shunt may include, for example, a tunable resistor, a fuse, a switch, a thermistor, and/or a variable resistor. | 03-24-2011 |
20110068698 | LIGHTING DEVICE WITH DEFINED SPECTRAL POWER DISTRIBUTION - Solid state lighting devices and illumination methods involve use of multiple solid state emitters of different colored outputs (optionally including at least one white or near-white emitter). Operation of the solid state emitters is controlled with at least one circuit element to emphasize and/or deemphasize perception of at least one color of a target surface based upon a reflectance spectral distribution of the target surface. At least one emitter may have an associated passive or active filter; the filterable emitter and/or active filter may be operated to deemphasize perception of at least one color of a target surface. Activation and/or alteration of emphasis or deemphasis of perception of color of a target surface may be selected by a user or automatically controlled. | 03-24-2011 |
20110068701 | SOLID STATE LIGHTING APPARATUS WITH COMPENSATION BYPASS CIRCUITS AND METHODS OF OPERATION THEREOF - A lighting apparatus includes a string of serially-connected light emitting devices and a bypass circuit coupled to first and second nodes of the string and configured to variably conduct a bypass current around at least one of the light-emitting devices responsive to a temperature and/or a total current in the string. In some embodiments, the bypass circuit includes a variable resistance circuit coupled to the first and second nodes of the string and configured to variably conduct the bypass current around the at least one of the light-emitting devices responsive to a control voltage applied to a control node and a compensation circuit coupled to the control node and configured to vary the control voltage responsive to a temperature and/or total string current. | 03-24-2011 |
20110068702 | SOLID STATE LIGHTING APPARATUS WITH CONTROLLABLE BYPASS CIRCUITS AND METHODS OF OPERATION THEREOF - A lighting apparatus includes a string with a plurality of serially-connected light emitting device sets, each set comprising at least one light emitting device. The apparatus further includes at least one controllable bypass circuit configured to variably bypass current around at least one light emitting device of a set of the plurality of light emitting device sets responsive to a control input. The control input may include, for example, a temperature input, a string current sense input and/or an adjustment input. The control input may be varied, for example, to adjust a color point of the string. | 03-24-2011 |
20110075408 | LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS INCLUDING LOW ABSORPTION, CONTROLLED REFLECTANCE ENCLOSURES - LED lighting systems include an enclosure adjacent at least one LED that is configured so that at least some light that is emitted by the at least one LED passes through the enclosure. The enclosure has less than about 10% total absorption. The enclosure also has a transmittance-to-reflectance ratio that is configured to homogenize light that emerges from the enclosure (1) directly from the at least one LED, and (2) after one or more reflections within the enclosure. | 03-31-2011 |
20110075410 | LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS INCLUDING LOW ABSORPTION, CONTROLLED REFLECTANCE AND DIFFUSION LAYERS - LED lighting systems include LEDs of at least two different colors, a reflective layer and a diffusion layer. The reflective layer has a transmittance-to-reflectance ratio that is configured to homogenize intensity of the light emitted from the LEDs. The diffusion layer is configured to homogenize color uniformity of the light. | 03-31-2011 |
20110080116 | Solid State Lighting Devices Including Thermal Management and Related Methods - Provided is a solid state lighting apparatus that includes multiple light emitting diodes (LEDs) including at least a first LED and a second LED. The apparatus includes a thermal sensor that is configured to provide a temperature signal corresponding to an operating condition of the solid state lighting apparatus and a control circuit that is configured to receive the temperature signal and to selectively interrupt electrical current to a portion of the plurality of light emitting diodes responsive to the temperature signal including a value that exceeds a high temperature limit. | 04-07-2011 |
20110084616 | SOLID STATE LIGHTING DEVICES PROVIDING VISIBLE ALERT SIGNALS IN GENERAL ILLUMINATION APPLICATIONS AND RELATED METHODS OF OPERATION - A solid state lighting apparatus includes a plurality of light emitting diodes, a sensor configured to output a sensor signal indicative of at least one operating condition of the solid state lighting apparatus, and a control circuit coupled to the sensor. The control circuit is configured to temporarily interrupt electrical current to ones of the plurality of light emitting diodes at respective intervals responsive to the sensor signal indicating that the operating condition does not meet a desired operating threshold to provide a visible indicator thereof in light emitted by the apparatus. Related devices and methods of operation are also discussed. | 04-14-2011 |
20110133223 | SOLID STATE EMITTER PACKAGES - A solid state emitter package may include at least one electrically conductive path associated with the solid state emitter package that is not in electrical communication with any solid state emitter of the solid state emitter package, with such electrically conductive path being susceptible to inclusion of a jumper or a control element. A solid state emitter package includes a principally red solid state emitter having peak emissions within 590 nm to 680 nm, a principally blue solid state emitter having peak emissions within 400 nm to 480 nm, and at least one of a common leadframe, common substrate, and common reflector, with the package being devoid of any principally green solid state emitters having peak emissions between 510 nm and 575 nm. | 06-09-2011 |
20110215355 | PHOTONIC CRYSTAL PHOSPHOR LIGHT CONVERSION STRUCTURES FOR LIGHT EMITTING DEVICES - Solid state light emitting devices include a solid state light emitting die and a photonic crystal phosphor light conversion structure. The photonic crystal phosphor light conversion structure may include a solid phosphor layer that includes dielectric nanostructures therein and may be on a light emitting surface of the solid state light emitting die. The photonic crystal phosphor light conversion structure may be attached to the light emitting surface of the solid state light emitting die via an adhesive layer. The photonic crystal phosphor light conversion structure may also be directly on a light emitting surface of the solid state light emitting die. Related methods are also disclosed. | 09-08-2011 |
20110221330 | HIGH CRI LIGHTING DEVICE WITH ADDED LONG-WAVELENGTH BLUE COLOR - Solid state lighting devcies include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of Δu′v′≦0.008 over a temperature change of 75° C. | 09-15-2011 |
20110222277 | HIGH CRI LIGHTING DEVICE WITH ADDED LONG-WAVELENGTH BLUE COLOR - Solid state lighting devices include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of Δu′v′≦0.008 over a temperature change of 75° C. | 09-15-2011 |
20120112614 | LIGHTING DEVICE WITH SPATIALLY SEGREGATED PRIMARY AND SECONDARY EMITTERS - A lighting device includes at least one first electrically activated emitter, at least one lumiphor support element comprising a lumiphoric material spatially segregated from the first electrically activated emitter and arranged to receive at least a portion of emissions from the first electrically activated emitter, and at least one second electrically activated emitter disposed on or adjacent to the at least one lumiphor support element. First and second electrically activated emitters having different peak wavelengths may be in conductive with first and second device-scale heat sinks, respectively. | 05-10-2012 |
20120112661 | LIGHTING DEVICE WITH MULTIPLE EMITTERS AND REMOTE LUMIPHOR - A lighting device including a plurality of electrically activated emitters having different peak wavelengths, at least one remote lumiphor arranged to receive at least some emissions from one of the emitters, and a primary electrically activated emitter spatially segregated and/or thermally insulated from a secondary electrically activated emitter. A lighting device including a plurality of electrically activated emitters spatially segregated from one another having different peak wavelengths, at least one lumiphor spatially segregated from one of the emitters, and a control device independently connected to each emitter or group of emitters. A method of producing a lighting device including a plurality of independently controllable electrically activated emitters. | 05-10-2012 |
20120236572 | COMPOSITE LENS WITH DIFFUSION - The present disclosure relates to an enhanced composite lens, which is formed from a material, such as thermoplastic material. The thermoplastic material may be polycarbonate, acrylic glass, and the like. To form the composite lens, a resin of the desired thermoplastic material is formed in the desired shape of a lens. To facilitate light diffusion within the body of the resultant lens, diffusive additives are added to the thermoplastic resin when forming the composite lens. As such, the diffusive additives are dispersed throughout the body of the composite lens and light diffusion occurs volumetrically within and throughout the body of the composite lens. | 09-20-2012 |
20120243222 | HOT LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS - LED lighting systems operate their LED above a junction temperature of 85° C. and space apart from the LED, components of the LED lighting system that reduce an expected lifetime of the LED lighting system to less than 25,000 hours as a result of operating the LED above the junction temperature of 85° C. Accordingly, the LED itself may be driven hotter than is conventionally the case, without impacting its lifetime. By allowing the LED to operate hotter, reduced heat sinking may be needed for the LED itself, which can decrease the cost, size and/or complexity of the thermal management system for the LED lighting system and/or can allow a thermal budget for the LED lighting system to be used elsewhere. Related structures are also described. | 09-27-2012 |
20120287601 | HIGH EFFICIENCY LED LAMP - A high-efficiency LED lamp is disclosed. Embodiments of the present invention provide a high-efficiency, high output solid-state lamp. The lamp includes an LED assembly, and an optical element or diffuser disposed to receive light from the LED assembly. The optical element includes a primary exit surface, wherein the primary exit surface is at least about 1.5 inches from the LED assembly. In example embodiments, the optical element is roughly cylindrical in shape, but can take other shapes and be made from various materials. An LED lamp according to some embodiments of the invention has an efficiency of at least about 150 lumens per watt. In some embodiments, the lamp has a light output of at least 1200 lumens. In some embodiments, the LED lamp produces light with a color rendering index (CRI) of at least 90 and a warm white color. | 11-15-2012 |
20120287619 | HIGH EFFICIENCY LED LAMP - A high-efficiency LED lamp is disclosed. Embodiments of the present invention provide a high-efficiency, high output solid-state lamp. The lamp includes an LED assembly, and an optical element or diffuser disposed to receive light from the LED assembly. The optical element includes a primary exit surface for the light, wherein the primary exit surface is at least about 1.5 inches from the LED assembly. In example embodiments, the optical element is roughly cylindrical in shape. An LED lamp according to some embodiments of the invention has an efficiency of at least 150 lumens per watt. In some embodiments, the lamp has a light output of at least 1200 lumens. In some embodiments, the LED lamp produces light with a color rendering index (CRI) of at least 90 and a correlated color temperature of from 2800 to 3000 K. | 11-15-2012 |
20130020929 | SOLID STATE LIGHTING DEVICE INCLUDING GREEN SHIFTED RED COMPONENT - A green-shifted red solid state lighting device includes at least one green solid state light emitter arranged to stimulate emissions from at least one red lumiphor, arranged in combination with at least one blue solid state light emitter. Such device may be devoid of any yellow lumiphor arranged to be stimulated by a blue solid state light emitter. A green shifted red plus blue (GSR+B) lighting device exhibits reduced Stokes Shift losses as compared to a blue shifted yellow plus red (BSY+R) lighting device, with comparable color rendering performance and similar efficiency, enhanced color stability over a range of operating temperatures, and enhanced color rendering performance at higher correlated color temperatures. Additional solid state emitters and/or lumiphors may be provided. | 01-24-2013 |
20130026925 | Solid State Lighting Apparatus and Methods Using Integrated Driver Circuitry - A lighting apparatus includes a first substrate including a switching circuit, the switching circuit including a first port, a second port and a current control circuit configured to generate a current at the second port of the current control circuit responsive to a varying voltage at the first port. The apparatus further includes a second substrate mounted on the first substrate and including at least two LEDs electrically coupled to the second port of the current control circuit of the first substrate. | 01-31-2013 |
20130114241 | LIGHTING DEVICE PROVIDING IMPROVED COLOR RENDERING - The present disclosure relates to lighting device configurations that render colors well and provide high quality white light. | 05-09-2013 |
20130114242 | SOLID STATE LIGHTING DEVICE INCLUDING MULTIPLE WAVELENGTH CONVERSION MATERIALS - A solid state lighting device includes a solid state light emitter combined with a lumiphor to form a solid state light emitting component, at least one lumiphor spatially segregated from the light emitting component, and another lumiphor and/or solid state light emitter. The solid state light emitting component may include a blue shifted yellow component with a higher color temperature, but in combination with the other elements the aggregated emissions from the lighting device have a lower color temperature. Multiple white or near-white components may be provided and arranged to stimulate one or more lumiphors spatially segregated therefrom. | 05-09-2013 |
20130170175 | LAMP WITH LED ARRAY - A lamp with an LED array is disclosed. The centralized nature of the LEDs allows the LEDs to be configured in a filament-like way using a supporting power structure, near the central portion of the optical envelope of the lamp. In example embodiments, the LEDs are cooled by a fluid medium to enable the LEDs to maintain appropriate mechanical stability and operating temperature. In some embodiments, the lamp operates at a power of at least 5 watts. Since the LED array can be centralized to form a filament-like structure, the light pattern from the lamp is not adversely affected by the presence of a heat sink or mechanical supporting parts. In some embodiments, phosphor is used provide wavelength conversion. The phosphor can be suspended within the optically transmissive fluid medium, placed remotely in the lamp structure, or applied to un-encapsulated LED die. | 07-04-2013 |
20130170199 | LED LIGHTING USING SPECTRAL NOTCHING - LED lighting using optical elements with spectral notching is disclosed. Embodiments of the invention provide an optical element and LED devices and systems using such an optical element, where spectral notch filtering introduced by the optical element improves the color rendering index (CRI) of emitted light. In some embodiments of the invention, the optical element is made to act as a notch filter by including a rare earth compound such as neodymium oxide in or on the material of which the optical element is made. A color pigment can also be used to impart notch-filtering properties to an optical element. An optical interference film can also be used. The optical element may be included in an LED device such as a multichip component or may be used as an enclosure or reflector for an LED lighting system such as a lamp or fixture. | 07-04-2013 |
20130271972 | GAS COOLED LED LAMP - A gas cooled LED lamp and submount is disclosed. The centralized nature of the LEDs allows the LEDs to be configured near the central portion of the optical envelope of the lamp. In some embodiments, the LEDs can be mounted on or fixed to a light transmissive submount. In some embodiments, LEDs can be disposed on both sides of a two-sided submount, or on thee or more sides if the submount structure includes three or more mounting surfaces. In example embodiments, the LEDs can be cooled and/or cushioned by a gas in thermal communication with the LED array to enable the LEDs to maintain an appropriate operating temperature for efficient operation and long life. In some embodiments, the gas is at a pressure of from about 0.5 to about 10 atmospheres and has a thermal conductivity of at least about 60 mW/m-K. | 10-17-2013 |
20130271981 | LED LAMP - A lamp has an optically transmissive enclosure and a base. A tower extends from the base into the enclosure and supports an LED assembly in the enclosure. The LED assembly comprises a plurality of LEDs operable to emit light when energized through an electrical path from the base. The tower and the LED assembly are arranged such that the plurality of LEDs are disposed about the periphery of the tower in a band and face outwardly toward the enclosure to create a source of the light that appears as a glowing filament. The tower forms part of a heat sink that transmits heat from the LED assembly to the ambient environment. The LED assembly has a three-dimensional shape. An electrical interconnect connects a conductor to the heat sink where the conductor is in the electrical path between the LED assembly and the base. | 10-17-2013 |
20130271987 | GAS COOLED LED LAMP - A gas cooled LED lamp and submount is disclosed. The centralized nature of the LEDs allows the LEDs to be configured near the central portion of the optical envelope of the lamp. In example embodiments, the LEDs can be cooled and/or cushioned by a gas in thermal communication with the LED array to enable the LEDs to maintain an appropriate operating temperature for efficient operation and long life. In some embodiments, the LED assembly is mounted on a glass stem. In some embodiments a thermal resistant path is created that prevents overtemperature of the LED array during the making of the lamp. In some embodiments the LED assembly comprises a lead frame and/or metal core board that is bent into a three-dimensional shape to create a desired light pattern in the enclosure or an extruded submount formed into a three-dimensional shape. | 10-17-2013 |
20130271989 | GAS COOLED LED LAMP - In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen. | 10-17-2013 |
20130271990 | GAS COOLED LED LAMP - In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen. | 10-17-2013 |
20130271991 | LED LAMP - A lamp has an optically transmissive enclosure and a base. A tower extends from the base into the enclosure and supports an LED assembly in the enclosure. The LED assembly comprises a plurality of LEDs operable to emit light when energized through an electrical path from the base. The tower and the LED assembly are arranged such that the plurality of LEDs are disposed about the periphery of the tower in a band and face outwardly toward the enclosure to create a source of the light that appears as a glowing filament. The tower forms part of a heat sink that transmits heat from the LED assembly to the ambient environment. The LED assembly has a three-dimensional shape. An electrical interconnect connects a conductor to the heat sink where the conductor is in the electrical path between the LED assembly and the base. | 10-17-2013 |
20130279175 | LED LAMP - A lamp has an optically transmissive enclosure and a base defining a longitudinal axis of the lamp that extends from the base to the free end of the enclosure. An LED assembly is positioned in the optically transmissive enclosure. The LED assembly includes LEDs operable to emit light when energized through an electrical path from the base. The LED assembly is arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis of the lamp. The emission profile of the LEDs being at least 120 degrees FWHM. | 10-24-2013 |
20130294092 | LED LAMP - A lamp has an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to the free end of the enclosure. A heat sink is at least partially located in the enclosure and includes a tower that extends along the longitudinal axis of the lamp. An LED assembly is positioned in the optically transmissive enclosure. The LED assembly comprises a lead frame circuit or a flex circuit where LEDs are attached to the circuits. The lead frame and flex circuit are formed into a three-dimensional shape and are thermally coupled to the tower. | 11-07-2013 |
20130301252 | GAS COOLED LED LAMP - In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. A board supports lamp electronics for the lamp and is located in the enclosure. The LED array is mounted to the board and LEDs are mounted on a submount formed to have a three dimensional shape. The board is electrically coupled to the LED array and the submount may be thermally coupled to the gas for dissipating heat from the plurality of LEDs. | 11-14-2013 |
20130323865 | POWER LIGHT EMITTING DIE PACKAGE WITH REFLECTING LENS AND THE METHOD OF MAKING THE SAME - A light emitting die package and a method of manufacturing the die package are disclosed. The die package includes a leadframe, at least one light emitting device (LED), a molded body, and a lens. The leadframe includes a plurality of leads and has a top side and a bottom side. A portion of the leadframe defines a mounting pad. The LED device is mounted on the mounting pad. The molded body is integrated with portions of the leadframe and defines an opening on the top side of the leadframe, the opening surrounding the mounting pad. The molded body further includes latches on the bottom side of the leadframe. The lens is coupled to the molded body. A composite lens is used as both reflector and imaging tool to collect and direct light emitted by LED(s) for desired spectral and luminous performance. | 12-05-2013 |
20140036497 | LED LAMP - A lamp comprises an enclosure comprising a reflector and a lens where the reflector is made of thermally conductive material. A base is coupled to the enclosure. An LED is located in the enclosure and emits light when energized through an electrical path from the base. A heat sink comprises a heat dissipating portion that may be at least partially exposed to the ambient environment and a heat conducting portion that is thermally coupled to the LED. The reflector is thermally coupled to the heat sink and is exposed to the exterior of the lamp such that heat from the heat sink may be dissipated to the ambient environment at least partially through the reflector. | 02-06-2014 |
20140043804 | LINEAR LED LAMP - A linear LED lamp is disclosed. Embodiments of the invention can provide an LED-based replacement lamp for a linear or “tube-type” bulb or a bulb with a linear filament or element. By filling the void within the lamp with an optically transmissive fluid to cool the LEDs without the use of a traditional heat sink, the light blocking effects of such a heat sink can be avoided. Thus, the LED replacement lamp can emit light in a substantially omnidirectional pattern. In some embodiments, the optically transmissive fluid medium is a liquid. In some embodiments, the optically transmissive fluid medium is a gel. An index matching medium can be used as the optically transmissive fluid medium. A color mixing treatment can optionally be included to eliminate color tints in cases where multiple LEDs of different colors are used to produce white light. | 02-13-2014 |
20140191653 | PROTECTIVE DIFFUSIVE COATING FOR LED LAMP - The present disclosure discloses LED lamps and enclosures comprising light transparent polymer coatings comprising light diffusing particles as well as methods for providing improved luminous intensity distribution. More particularly, the present disclosure relates to enclosures comprising light-transparent polymer coatings comprising a light diffusing particles on at least one surfaces of the enclosure of an LED lamp. | 07-10-2014 |
20140239794 | GAS COOLED LED LAMP - In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen. | 08-28-2014 |
20140268778 | SOLID STATE LIGHTING APPARATUS AND METHODS USING INTEGRATED DRIVER CIRCUITRY - A lighting apparatus includes a first substrate including a switching circuit, the switching circuit including a first port, a second port and a current control circuit configured to generate a current at the second port of the current control circuit responsive to a varying voltage at the first port. The apparatus further includes a second substrate mounted on the first substrate and including at least two LEDs electrically coupled to the second port of the current control circuit of the first substrate. | 09-18-2014 |
20140268808 | LED LAMP AND HYBRID REFLECTOR - A lamp comprises an enclosure having a reflective surface and an exit surface through which light is emitted from the enclosure and a base. A plurality of LEDs are located in the enclosure and are operable to emit light when energized through an electrical path from the base. The reflective surface comprises a first reflective layer applied to the enclosure and a second reflective layer over the first reflective layer. The first reflective layer is a metalized surface. The second layer comprises a transparent carrier such as silicone mixed with a reflective media such as TiO | 09-18-2014 |
20140268826 | LED LAMP AND HEAT SINK - A lamp has an optically transmissive enclosure and a base. At least one LED is located in the enclosure and are operable to emit light when energized through an electrical path from the base. A heat sink comprises a heat dissipating portion having a first part that is located inside of the enclosure and that is thermally coupled to the LED and a second part that is exposed to the ambient environment. The second part comprises a plurality of stems connected to the first part where each stem supports a first overhang that extends over a portion of the enclosure and a second overhang that extends over a portion of the base. | 09-18-2014 |