Patent application number | Description | Published |
20130250544 | CERAMIC WAVELENGTH-CONVERSION PLATES AND LIGHT SOURCES INCLUDING THE SAME - A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter. | 09-26-2013 |
20130313603 | Wavelength Converter for an LED, Method of Making, and LED Containing Same - A wavelength converter for an LED is described that comprises a substrate of monocrystalline garnet having a cubic crystal structure, a first lattice parameter and an oriented crystal face. An epitaxial layer is formed directly on the oriented crystal face of the substrate. The layer is comprised of a monocrystalline garnet phosphor having a cubic crystal structure and a second lattice parameter that is different from the first lattice parameter wherein the difference between the first lattice parameter and the second lattice parameter results in a lattice mismatch within a range of ±15%. The strain induced in the phosphor layer by the lattice mismatch shifts the emission of the phosphor to longer wavelengths when a tensile strain is induced and to shorter wavelengths when a compressive strain is induced. Preferably, the wavelength converter is mounted on the light emitting surface of a blue LED to produce an LED light source. | 11-28-2013 |
20140022761 | Luminescent Converter and LED Light Source Containing Same - A luminescent converter for a light emitting diode is herein described. The converter comprises a translucent substrate and a thin-film layer deposited on the substrate wherein the thin-film layer is comprised of a phosphor. The translucent substrate may further comprise a solid, ceramic phosphor such as YAG:Ce. | 01-23-2014 |
20150055319 | WAVELENGTH CONVERSION STRUCTURE FOR A LIGHT SOURCE - A wavelength conversion structure for a light source including a solid-state light-emitting device. The wavelength conversion structure includes one or more apertures formed therein. The apertures may permit color steering of the light downstream of the conversion structure without a substantial reduction in the output of secondary light produced during a conversion process. | 02-26-2015 |
Patent application number | Description | Published |
20090252667 | RARE EARTH-ACTIVATED ALUMINUM NITRIDE POWDERS AND METHOD OF MAKING - Rare earth-activated aluminum nitride powders are made using a solution-based approach to form a mixed hydroxide of aluminum and a rare earth metal, the mixed hydroxide is then converted into an ammonium metal fluoride, preferably a rare earth-substituted ammonium aluminum hexafluoride ((NH | 10-08-2009 |
20120018673 | Garnet Material, Method for its Manufacturing and Radiation-Emitting Component Comprising the Garnet Material - A material, comprising a garnet having the composition represented by the formula A | 01-26-2012 |
20120074835 | LED Wavelength-Coverting Plate with Microlenses in Multiple Layers - A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate. | 03-29-2012 |
20120074836 | LED Wavelength-Converting Plate with Microlenses - A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes microlenses deposited thereon. The microlenses may have an index of refraction different from the index of refraction of the wavelength-converting plate. The microlenses on the top surface of the plate increase lumen output in a direction normal to the top surface of a wavelength-converting plate. | 03-29-2012 |
20120075834 | Ceramic Wavelength Converter and LED Light Source Containing Same - There is herein described an LED light source comprising an LED and a ceramic wavelength converter positioned to receive at least a portion of the light emitted by said LED, said ceramic wavelength converter converting at least a portion of the light emitted by said LED into light of a different wavelength, said ceramic wavelength converter comprising a chlorosilicate phosphor and having a density at least about 90% of theoretical density. The chlorosilicate phosphor is preferably a green-emitting Ca | 03-29-2012 |
20120261688 | LED WAVELENGTH-CONVERTING STRUCTURE INCLUDING A THIN FILM STRUCTURE - A wavelength-converting structure for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting structure includes a thin film structure having a non-uniform top surface. The non-uniform top surface is configured increase extraction of light from the top surface of a wavelength-converting structure. | 10-18-2012 |
20120273807 | Method for the Producing of a Light-Emitting Semiconductor Chip, Method for the Production of a Conversion Die and Light-Emitting Semiconductor Chip - A light-emitting semiconductor chip is provided, the semiconductor chip comprising a semiconductor body having a pixel region with at least two electrically isolated sub-regions, each sub-region comprising an active layer, which generates electromagnetic radiation of a first wavelength range during operation, a separately manufactured ceramic conversion die over a radiation emission area of at least one sub-region, said conversion die being configured to convert radiation of the first wavelength range into electromagnetic radiation of a second wavelength range, wherein a width of the conversion die does not exceed 100 μm. Further, a method for the production of a light-emitting semiconductor chip and method for the production of a conversion die are provided. | 11-01-2012 |