Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Hans-Helmut Bechtel, Roetgen DE

Hans-Helmut Bechtel, Roetgen DE

Patent application numberDescriptionPublished
20080203421Structured Substrate For a Led - A substrate (08-28-2008
20080211387Electroluminescent Device - An electroluminescent device comprising at least one electroluminescent light source (09-04-2008
20080220260Light Emitting Device With A Ceramic Sialon Material - The invention relates to a light emitting device, especially a LED comprising a SiAION material with a transparency of ≧10% to ≦85% for light in the wavelength range from ≧550 nm to ≦1000 nm.09-11-2008
20080265749Phosphor-Converted Electroluminescent Device with Absorbing Filter - A phosphor-converted electroluminescent device comprising an electroluminescent light source (LED 10-30-2008
20080290785Light 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
20080303407Display Device with Solid State Fluorescent Material - A display device (12-11-2008
20090009443Display Device - The present invention relates to a display device (01-08-2009
20090026908LIGHT-EMITTING DEVICE - A light-emitting device comprising a solid-state light source (01-29-2009
20090066221ELECTROLUMINESCENT DEVICE - A conversion element (03-12-2009
20090072710FLUORESCENT LIGHTING CREATING WHITE LIGHT - A light emitting system (03-19-2009
20090078949LIGHT EMITTING DEVICE WITH CONVERSION STRUCTURE - The invention relates to a light-emitting device comprising a conversion structure and one or several LEDs (03-26-2009
20090105065LIGHT EMITTING DEVICE WITH A CERAMIC GARNET MATERIAL - The invention relates to a light emitting device, especially a LED comprising a ceramic garnet material.04-23-2009
20090174309LIGHT EMITTING DEVICE WITH A AT LEAST ONE CERAMIC SPHERICAL COLOR CONVERTER MATERIAL - The invention relates to a light emitting device comprising at least one light source and at least one ceramic spherical color converter material, which helps to ease the manufacture as well as to improve the luminescence properties of the light emitting device.07-09-2009
20090244923LIGHT DELIVERY DEVICE WITH IMPROVED CONVERSION ELEMENT - The invention relates to a light delivery device comprising a conversion element and one or several LEDs, which emit light into the conversion element. The light is then converted and emitted with a high radiant flux.10-01-2009
20100053933WHITE EMITTING LIGHT SOURCE AND LUMINESCENT MATERIAL WITH IMPROVED COLOUR STABILITY - The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.03-04-2010
20100059777ILLUMINATION DEVICE, PARTICULARLY WITH LUMINESCENT CERAMICS - The invention relates to an illumination device (03-11-2010
20100067233ARRANGEMENT FOR EMITTING MIXED LIGHT - An arrangement for emitting mixed light (03-18-2010
20100133563ILLUMINATION SYSTEM COMPRISING A RADIATION SOURCE AND A LUMINESCENT MATERIAL - An illumination system, comprising a radiation source and a luminescent 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 yellow red-emitting cerium(III)-activated alkaline earth oxonitridoaluminosilicate of general formula Ca1−x−yAxAl1+a−bBbSi1−aN3−aOa:Cey, wherein A selected from the group comprising beryllium, magnesium, strontium, barium, zinc, manganese, lithium, sodium, potassium, rubidium, praseodymium, samarium, europium, and B selected from the group comprising boron, gallium, scandium and wherein 006-03-2010
20100164344LIGHT EMITTING DEVICE - The present invention relates to a light emitting device (07-01-2010
20100273639CERAMIC 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
20100320492RED EMITTING SIAION-BASED MATERIAL - The invention relates to a red emitting material of the composition a(M12-23-2010
20110031474ELECTROLUMINESCENT DEVICE WITH IMPROVED LIGHT DECOUPLING - The invention relates to an electroluminescent device which comprises a substrate (02-10-2011
20110140131PHOTO-DETECTOR WITH WAVELENGTH CONVERTER - The invention relates to a photo-detector comprising a light sensitive element (06-16-2011

Patent applications by Hans-Helmut Bechtel, Roetgen DE