Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.

Abstract: A light source for emitting emitted light having an SPD comprising: (a) a plurality of light emitters including at least one violet solid-state emitter; (b) at least one phosphor; wherein said light emitters and said at least one phosphor being configured such that: at least 25% of the power within the SPD is in the range 390-420 nm, and the emitted light has a chromaticity which is within a Duv distance of less than 5 points from the Planckian locus.

Abstract: LED lamp systems having improved light quality are disclosed. The lamps emit more than 500 lm and more than 2% of the power in the spectral power distribution is emitted within a wavelength range from about 390 nm to about 430 nm.

Abstract: A light emitting diode device has a bulk gallium and nitrogen containing substrate with an active region. The device has a lateral dimension and a thick vertical dimension such that the geometric aspect ratio forms a volumetric diode that delivers a nearly uniform current density across the range of the lateral dimension.

Abstract: Small LED sources with high brightness and high efficiency apparatus including the small LED sources and methods of using the small LED sources are disclosed.

Abstract: A method of forming a III-Nitride based device comprising: (a) depositing first layers by MOCVD on a substrate, wherein the first layers comprise device layers of III-Nitride material; and (b) depositing epitaxial second layers over the first layers by at least one of sputtering, plasma deposition, pulsed laser deposition, or liquid phase epitaxy, wherein the second layers comprise III-Nitride material and define at least partially a tunnel junction.

Abstract: A semiconductor comprising at least one contact, formed on an interface with the semiconductor, the contact comprising at least a layer of a first metal, the first metal being of sufficient amount to impart a first property in the layer; and a second metal diffused in the layer, the second metal having a concentration in the layer sufficiently low such that the second metal does not diminish significantly the first property of the layer, the concentration being sufficiently high such that the second metal imparts significantly a second property in the layer.

Abstract: Apparatus and methods of attaching accessories to LED lamps and for providing active accessories in LED lamps are disclosed. The active accessories include single-function active accessories as well as multi-function active accessories.

Abstract: Techniques for processing materials in supercritical fluids including processing in a capsule disposed within a high-pressure apparatus enclosure are disclosed. The disclosed techniques are useful for growing crystals of GaN, AlN, InN, and their alloys, including InGaN, AlGaN, and AlInGaN for the manufacture of bulk or patterned substrates, which in turn can be used to make optoelectronic devices, lasers, light emitting diodes, solar cells, photoelectrochemical water splitting and hydrogen generation devices, photodetectors, integrated circuits, and transistors.

Abstract: A display for emitting display light comprising: (a) a light source for emitting a source light; and (b) a filter positioned in the path of said source light, said filter comprising at least short, medium and long filters, wherein said short filter is configured to transmit short-primary light from said source light, said short-primary light comprising a violet portion having wavelengths from 400 to 440 nm and at least a second portion having wavelengths above 440 nm such that said short-primary light is perceptually blue, said short-primary light having a short-primary SPD having a short-primary power between 380-780 nm and a blue power between 440-500 nm, wherein said blue power is less than 5% of said short-primary power.

Abstract: Techniques for controlling oxygen concentration levels during annealing of highly-reflective contacts for LED devices together with lamps, LED device and method embodiments thereto are disclosed.

Abstract: A method for transmitting data over a power signal to at least one lamp, said power signal comprising alternating high-power and low-power sections, said method comprising: modulating said power signal in one or more interface regions based upon at least one data symbol to generate a modulated signal having one or more modulated portions, each modulated portion having a first average power, each of said interface regions comprising adjacent portions of a high-power section and a low-power section, said adjacent portions having a second average portion; wherein said first average power is about the same as said second average power.

Abstract: Methods and apparatus for providing circadian-friendly LED light sources are disclosed. A light source is formed to include a first LED emission (e.g., one or more LEDs emitting a first spectrum) and a second LED emission (e.g., one or more LEDs emitting a second spectrum) wherein the first and second LED emissions are combined in a first ratio and in a second ratio such that while changing from the first ratio to the second ratio the relative circadian stimulation is varied while maintaining a color rendering index above 80.

Abstract: Accessories for LED lamp systems and methods of attaching accessories to illumination sources (e.g., LED lamps) are disclosed. A beam shaping accessories mechanically affixed to the LED lamp. The lens is designed to adapt to a first fixture that is mechanically attached to the lens. Accessories are designed to have a second fixture for mating to the first fixture such that the first fixture and the second fixture are configured to produce a retaining force between the first accessory and the lens. The retaining force is a mechanical force that is accomplished by mechanical mating of mechanical fixtures, or the retaining force is a magnetic force and is accomplished by magnetic fixtures configured to have attracting magnetic forces. In some embodiments, the accessory is treated to modulate an emanated light pattern (e.g., a rectangular, or square, or oval, or circular or diffused emanated light pattern). A USB connector is also provided.

Abstract: A smart lamp comprising: a lamp; and a processor configured to operate said lamp, said processor having at least active and standby modes of operation, in said active mode, said processor uses a first communication protocol having a first power consumption, and, in said standby mode, said processor uses a second communication protocol having a second power consumption, wherein said first power consumption is significantly higher than said second power consumption.

Abstract: A packaged optical device includes a substrate having a surface region with light emitting diode devices fabricated on a semipolar or nonpolar GaN substrate. The LEDs emit polarized light and are characterized by an overlapped electron wave function and a hole wave function. Phosphors within the package are excited by the polarized light and, in response, emit electromagnetic radiation of a second wavelength.