Abstract: A light-emitting device may include a ceramic substrate having a reflective component, a light-emitting diode on the ceramic substrate, and a light-converting material over the light-emitting diode. A lighting system may include a ceramic substrate having a reflective component, a plurality of light-emitting diodes connected together in series, wherein the plurality of light-emitting diodes are on the ceramic substrate, and a light-converting material over the plurality of light-emitting diodes. The ceramic substrate may provide electrical insulation between the light-emitting diode and the aluminum carrier. The ceramic substrate may provide thermal conductivity between the light-emitting diode and the aluminum carrier. The reflective component may include zirconium oxide. The ceramic substrate may include aluminum oxide and/or aluminum nitride. The light-converting material may include phosphor. The light-emitting diode may have an epitaxial diode structure.

Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.

Abstract: Standardized photon building blocks are used to make both discrete light emitters as well as array products. Each photon building block has one or more LED chips mounted on a substrate. No electrical conductors pass between the top and bottom surfaces of the substrate. The photon building blocks are supported by an interconnect structure that is attached to a heat sink. Landing pads on the top surface of the substrate of each photon building block are attached to contact pads disposed on the underside of a lip of the interconnect structure. In a solder reflow process, the photon building blocks self-align within the interconnect structure. Conductors on the interconnect structure are electrically coupled to the LED dice in the photon building blocks through the contact pads and landing pads. The bottom surface of the interconnect structure is coplanar with the bottom surfaces of the substrates of the photon building blocks.

Abstract: Various aspects of a light emitting apparatus includes a substrate. Various aspects of the light emitting apparatus include a light emitting die arranged on the substrate. The light emitting die includes one or more side walls. Various aspects of the light emitting apparatus include a reflective die attach material extending along the one or more side walls of the light emitting die.

Abstract: Light emitting assemblies comprise a plurality of Light Emitting Diode (LED) dies arranged and attached to common substrate to form an LED array having a desired optimum packing density. The LED dies are wired to one another and are attached to landing pads on the substrate for receiving power from an external electrical source via an interconnect device. The assembly comprises a lens structure, wherein each LED die comprises an optical lens disposed thereover that is configured to promote optimal light transmission. Each optical lens has a diameter that is between about 1.5 to 3 times the size of a respective LED die, and is shaped in the form of a hemisphere. Fillet segments are integral with and interposed between the adjacent optical lenses, and provide sufficient space between adjacent optical lenses so that the diameters of adjacent optical lenses do not intersect with one another.

Abstract: A lighting module may receive control signal having a first control scheme, the lighting module including a driver including at least one channel; and a control module; where the control module translates the received first control scheme into a predetermined second control scheme, when the first control scheme is different from the predetermined second control scheme; wherein the control module generates an identity voltage correlated with the received first control scheme; wherein the control module outputs to the driver a driver control signal including the predetermined second control scheme, and the identity voltage; and wherein the driver generates a driver output based on the identity voltage and the driver control signal.

Abstract: Light emitting diode (LED) constructions comprise an LED having a pair of electrical contacts along a bottom surface. A lens is disposed over the LED and covers a portion of the LED bottom surface. A pair of electrical terminals is connected with respective LED contacts, are sized larger than the contacts, and connect with the lens material along the LED bottom surface. A wavelength converting material may be interposed between the LED and the lens. LED constructions may comprise a number of LEDs, where the light emitted by each LED differs from one another by about 2.5 nm or less. LED constructions are made by attaching 2 or more LEDs to a common wafer by adhesive layer, forming a lens on a wafer level over each LED to provide a rigid structure, removing the common wafer, forming the electrical contacts on a wafer level, and then separating the LEDs.

Abstract: Side light LED troffer tube. In an aspect, a side light LED tube is provided that includes a tube having at least one light receiving portion configured to receive light and gradient optics formed on the tube. The gradient optics providing a transparency gradient configured to distribute the light to achieve a selected emitted light intensity variation across a selected surface of the tube.

Abstract: A lamp includes an extended planar light source, and an optical element arranged with the light source, wherein the optical element comprises an outer surface having an indented cusp substantially over the light source. A lamp includes an extended planar light source, and an optical element arranged with the light source, wherein the optical element comprises an outer surface having a portion at a peripheral edge comprising a curvature configured to redirect light emitted from the light source by total internal reflection.

Abstract: There is provided a white light emitting device comprising a first LED and a second LED disposed on a substrate, a first photoluminescence material layer disposed over at least said first LED, a second photoluminescence material layer disposed over at least said second LED, and a diffusing layer disposed over said first and second photoluminescence layers, said diffusing layer comprising light scattering particles. A method and component are also provided.

Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.

Abstract: Various aspects of a light emitting apparatus include a substrate having at least one angled portion. Some aspects of the light emitting apparatus include at least one light emitting device arranged on the substrate. Some aspects of the light emitting apparatus include a plurality of conductors arranged on the substrate. In some aspects of the light emitting apparatus, the conductors are electrically coupled to the at least one light emitting device.

Abstract: An LED CoB structure with the combination use of blue and red LED dies is used to achieve warm white light, with good quantum conversion efficiency at a reasonably low cost. Both the red and blue LED dies are fabricated on transparent substrates. The current density of the LED dies is designed to match the different degradation rate of each type of LED die. The methods used to achieve high efficiency include adjusting the power, wavelength, and/or position of the dies.

Abstract: A light-emitting device may include a ceramic substrate having a reflective component, a light-emitting diode on the ceramic substrate, and a light-converting material over the light-emitting diode. A lighting system may include a ceramic substrate having a reflective component, a plurality of light-emitting diodes connected together in series, wherein the plurality of light-emitting diodes are on the ceramic substrate, and a light-converting material over the plurality of light-emitting diodes. The ceramic substrate may provide electrical insulation between the light-emitting diode and the aluminum carrier. The ceramic substrate may provide thermal conductivity between the light-emitting diode and the aluminum carrier. The reflective component may include zirconium oxide. The ceramic substrate may include aluminum oxide and/or aluminum nitride. The light-converting material may include phosphor. The light-emitting diode may have an epitaxial diode structure.

Abstract: There is provided a system comprising a driver and a control module, the control module capable of translating a received control signal having a first control scheme into a driver control signal having a predetermined second control scheme; and wherein the driver is configured for generating a driver output based on the identity of the first control scheme and the driver control signal. A driver, control module, and a method of controlling an LED system are also provided.

Abstract: A lighting system that is part of a headlight module of a motor vehicle includes an array of LED light sources that include no organic materials. Each light source includes a glass lens attached to a phosphor glass converter plate, which itself is attached to an LED die that is flip-chip mounted on a mounting substrate. The converter plate includes phosphor particles embedded in glass. Each lens is disposed laterally over a single LED die. The converter plate is attached to the LED die by a first bonding layer, and the lens is attached to the converter plate by a second bonding layer. Both bonding layers are made of a metal oxide and are thinner than the converter plate. Either each lens does not extend horizontally outside the lateral boundary of each converter plate, or the lens portions centered on each LED die are part of a unitary lens array.

Abstract: There is provided a white light emitting device comprising: first and second LEDs operable to generate excitation light having a dominant wavelength in a range from 440 nm to 480 nm and mounted on a substrate; a first photoluminescence material which generates light having a peak emission wavelength in a range from 500 nm to 590 nm; and a second photoluminescence material which generates light having a peak emission wavelength in a range from 600 nm to 650 nm, wherein the first LED is covered by the first photoluminescence material, and the second LED is covered by the first and second photoluminescence materials.

Abstract: Side light LED troffer tube. In an aspect, a side light LED tube is provided that includes a tube having at least one light receiving portion configured to receive light and gradient optics formed on the tube. The gradient optics providing a transparency gradient configured to distribute the light to achieve a selected emitted light intensity variation across a selected surface of the tube.

Abstract: A light source and method for making the same are disclosed. The light source includes a plurality of Segmented LEDs connected in parallel to a power bus and a controller. The power bus accepts a variable number of Segmented LEDs. The controller receives AC power and provides a power signal on the power bus. Each Segmented LED is characterized by a driving voltage that is greater than 3 times the driving voltage of a conventional LED fabricated in the same material system as the Segmented LED. The number of Segmented LEDs in the light source is chosen to compensate for variations in the light output of individual Segmented LEDs introduced by the manufacturing process. In another aspect of the invention, the number of Segmented LEDs connected to the power bus can be altered after the light source is assembled.

Abstract: Various aspects of a light emitting apparatus includes a substrate. Various aspects of the light emitting apparatus include a light emitting die arranged on the substrate. The light emitting die includes one or more side walls. Various aspects of the light emitting apparatus include a reflective die attach material extending along the one or more side walls of the light emitting die.