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Helmut Bechtel

Helmut Bechtel, Roetgen DE

Patent application numberDescriptionPublished
20080197764Electroluminescence Light Source - Electroluminescence light source having a transparent substrate (08-21-2008
20080217636Electroluminescence Device - An electroluminescence device comprising at least one electroluminescence light source (09-11-2008
20080277680Led With Improved Light Emittance Profile - The present invention relates to a LED comprising a substrate layer with a first surface and a second surface opposing the first surface and having a refractive index of n11-13-2008
20090184624LIGHT EMITTING DEVICE WITH IMPROVED CONVERSION LAYER - The invention relates to a light emitting device comprising a substrate layer and a light conversion layer located on said substrate layer, whereby the light conversion layer is a polycrystalline ceramic layer, characterized in that the light conversion layer is positioned on the substrate layer by sintering.07-23-2009
20090185383LIGHT EMITTING PLATE SYSTEM WITH IMPROVED TRANSPARENCY - The invention relates to a light emitting plate system (07-23-2009
20100207139PHOTONIC MATERIAL HAVING REGULARLY ARRANGED CAVITIES - The invention relates to photonic materials having regularly arranged cavities containing at least one colorant, where the wall material of the photonic material has dielectric properties and as such is essentially non-absorbent for the wavelength of an absorption band of the respective colorant and is essentially transparent for the wavelength of a colorant emission which can be stimulated by the absorption wavelength, and the cavities are shaped in such a way that radiation having the wavelength of the weak absorption band of the colorant is stored in the photonic material, to the use thereof as phosphor system in an illuminant, to corresponding illuminants and production processes.08-19-2010
20110042584DEVICE FOR DETERMINING THE CONVERSION POWER - This invention relates to a device for determining the conversion power of conversion element, a method for performing these measurements and a method for producing pcLEDs with essentially the same color point applying said device and said method. The device comprises a light source (02-24-2011

Patent applications by Helmut Bechtel, Roetgen DE

Helmut Bechtel, Roelgen DE

Patent application numberDescriptionPublished
20090020897PROCESS FOR THE INCORPORATION OF NANOPHOSPHORS INTO MICRO-OPTICAL STRUCTURES - The invention relates to a process for the incorporation of nanophosphors (phosphors) into micro-optical structures, and to corresponding illuminants. In this impregnation process, a micro-optical system comprising inverse opal powders is filled with a dispersion of a nanophosphor.01-22-2009