Patent application number | Description | Published |
20080211387 | Electroluminescent Device - An electroluminescent device comprising at least one electroluminescent light source ( | 09-04-2008 |
20080265749 | Phosphor-Converted Electroluminescent Device with Absorbing Filter - A phosphor-converted electroluminescent device comprising an electroluminescent light source (LED | 10-30-2008 |
20080284306 | Low-Pressure Mercury Vapor Discharge Lamp and Compact Fluorescent Lamp - A low-pressure mercury vapor discharge lamp has a light-transmitting discharge vessel ( | 11-20-2008 |
20080290785 | Light Emitting Device with an Improved Caalsin Light Converting Material - Light emitting device with a light source to emit primary light and a light conversion layer to convert at least a part of the primary light into secondary light comprising a CaAlSiN light converting material with a transmissivity of >10% to ≦80% for a light in the wavelength range from >580 to ≦lOOOnm. | 11-27-2008 |
20090032772 | LUMINESCENT MATERIAL - The invention relates to a luminescent material comprising a luminescent particle ( | 02-05-2009 |
20090127999 | Discharge lamp with a monolithic ceramic color converter - The invention relates to a light emitting device, in particular discharge lamps with inner or outer electrodes or electrodeless in which the emittance of red light is enhanced by using a monolithic ceramic luminescence converter. | 05-21-2009 |
20090155943 | Luminescent Ceramic Element For A Light Emitting Device - A semiconductor structure including a light emitting layer disposed between an n-type region and a p-type region is attached to a compound substrate including a host which provides mechanical support to the device and a ceramic layer including a luminescent material. In some embodiments the compound substrate includes a crystalline seed layer on which the semiconductor structure is grown. The ceramic layer is disposed between the seed layer and the host. In some embodiments, the compound substrate is attached to the semiconductor structure after growth of the structure on a conventional growth substrate. In some embodiments, the compound substrate is spaced apart from the semiconductor structure and does not provide mechanical support to the structure. In some embodiments, the ceramic layer has a thickness less than 500 μm. | 06-18-2009 |
20100001303 | RED EMITTING OXYNITRIDE LUMINESCENT MATERIALS - The invention relates to an improved red light emitting material of the formula M | 01-07-2010 |
20100012964 | ILLUMINATION SYSTEM COMPRISING MONOLITHIC CERAMIC LUMINESCENCE CONVERTER - An illumination system comprising a radiation source and a composite monolithic ceramic luminescence converter comprising a composite luminescent material comprising at least one first phosphor and at least one second phosphor capable of absorbing a part of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light provides improved light mixing and chromaticity control of the emitted light mixture. The invention relates also to a composite monolithic ceramic luminescence converter and a method of manufacturing such composite monolithic ceramic luminescence converter. | 01-21-2010 |
20100059777 | ILLUMINATION DEVICE, PARTICULARLY WITH LUMINESCENT CERAMICS - The invention relates to an illumination device ( | 03-11-2010 |
20100060144 | TRI-COLOR WHITE LIGHT LED LAMP - The invention relates to a tri-color lamp for generating white light comprising a phosphor composition comprising a phosphor of general formula (Ba | 03-11-2010 |
20100067233 | ARRANGEMENT FOR EMITTING MIXED LIGHT - An arrangement for emitting mixed light ( | 03-18-2010 |
20100142181 | ILLUMINATION SYSTEM COMPRISING COMPOSITE MONOLITHIC CERAMIC LUMINESCENCE CONVERTER - An illumination system comprising a radiation source and a monolithic ceramic luminescence converter comprising a composite material of at least one luminescent compound, and at least one non-luminescent compound, wherein the material of the non-luminescent compound comprises silicon and nitrogen, is advantageously used, when the luminescent compound comprises an rare-earth metal-activated host compound also comprising silicon and nitrogen. Shared chemical characteristics of the luminescent compound and the non-luminescent material improve phase assemblage, thermal and optical behavior. The invention relates also to a composite monolithic ceramic luminescence converter. | 06-10-2010 |
20100208449 | LIGHT EMITTING DEVICE COMPRISING A MULTIPHASE SIALONG-BASED CERAMIC MATERIAL - The invention relates to a light emitting device comprising a light source, especially a LED, and a luminescent material, which is a ceramic multiphase material essentially of the composition M | 08-19-2010 |
20100244076 | LIGHT EMITTING DEVICE COMPRISING A GREEN EMITTING SIALON-BASED MATERIAL - The invention relates to a light emitting device, especially a LED comprising a green emitting material of the composition Sr | 09-30-2010 |
20100273639 | CERAMIC MATERIAL FOR LEDS WITH REDUCED SCATTERING AND METHOD OF MAKING THE SAME - The invention relates to a ceramic luminescent material for LEDs with reduced scattering made by a uniaxial hot-pressing step. | 10-28-2010 |
20100289044 | WAVELENGTH CONVERSION FOR PRODUCING WHITE LIGHT FROM HIGH POWER BLUE LED - A white light LED is described that uses an LED die that emits visible blue light in a wavelength range of about 450-470 nm. A red phosphor or quantum dot material converts some of the blue light to a visible red light having a peak wavelength between about 605-625 nm with a full-width-half-maximum (FWHM) less than 80 nm. A green phosphor or quantum dot material converts some of the blue light to a green light having a FWHM greater than 40 nm, wherein the combination of the blue light, red light, and green light produces a white light providing a color rendering of R | 11-18-2010 |
20100320492 | RED EMITTING SIAION-BASED MATERIAL - The invention relates to a red emitting material of the composition a(M | 12-23-2010 |
20110084232 | ILLUMINATION SYSTEM COMPRISING A RADIATION SOURCE AND A FLUORESCENT MATERIAL - The invention concerns an illumination system for generation of colored, especially amber or red light, comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light; wherein said at least one phosphor is a amber to red emitting a rare earth metal-activated oxonitridoalumosilicate of general formula (Ca | 04-14-2011 |
20110084293 | MULTI-GRAIN LUMINESCENT CERAMICS FOR LIGHT EMITTING DEVICES - A ceramic body is disposed in a path of light emitted by a light source. The light source may include a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region. The ceramic body includes a plurality of first grains configured to absorb light emitted by the light source and emit light of a different wavelength, and a plurality of second grains. For example, the first grains may be grains of luminescent material and the second grains may be grains of a luminescent material host matrix without activating dopant. | 04-14-2011 |
20110220953 | LED ASSEMBLY - A light emission diode (LED) assembly, comprising a LED die ( | 09-15-2011 |
20120112129 | GREEN EMITTING MATERIAL - The invention relates to an improved green emitting material of the form M | 05-10-2012 |
20120134134 | ARRANGEMENT FOR EMITTING MIXED LIGHT - An arrangement for emitting mixed light including a primary and secondary radiation with at least one first electroluminescent light-source for emitting first primary radiation, at least one second electroluminescent light-source for emitting second primary radiation, and a light-converting element for absorbing at least one of the primary radiations and re-emitting the secondary radiation. The light-converting element is arranged so that the entire proportion of primary radiation in the mixed light passes through the light-converting element. The light-converting element is a ceramic light-converting material whose microstructure is selected to be such that the color point of the mixed light of primary and second radiation is substantially independent of the angle of viewing. | 05-31-2012 |
20120194060 | Red Emitting Luminescent Materials - The invention relates to an improved red light emitting material of the formula M | 08-02-2012 |