Patents by Inventor Matthias Heidemann
Matthias Heidemann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11552225Abstract: Embodiments include a device having a micro-LED that includes at least two, individually addressable light emitting diodes on a same substrate; a phosphor converter layer disposed on the micro-LED, the phosphor converter layer including phosphor particles having a D50 of greater than 1 ?m and less than 10 ?m.Type: GrantFiled: May 29, 2020Date of Patent: January 10, 2023Assignee: Lumileds LLCInventors: Hans-Helmut Bechtel, Jens Meyer, Matthias Heidemann, Petra Huppertz, Joerg Feldmann
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Patent number: 11333806Abstract: The invention describes a light conversion device having a light converter, which is adapted to convert primary light to converted light, so that a peak emission wavelength of the converted light is in a longer wavelength range than a peak emission wavelength of the primary light. The light conversion device also has a reflective structure coupled to at least a part of a coupling surface of the light converter, where the reflective structure is a narrowband reflector arranged to reflect at least some of the primary light impinging on the reflective structure and to transmit at least some of the converted light impinging on the reflective structure.Type: GrantFiled: April 19, 2018Date of Patent: May 17, 2022Assignee: Lumileds LLCInventors: Claudia Goldmann, Hans-Helmut Bechtel, Matthias Heidemann, Rainald Gierth, Thomas Diederich
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Patent number: 11257986Abstract: Embodiments include a device having a component with a component surface; a phosphor converter body with a phosphor converter body surface facing the component surface; a plurality of particles between and in contact with the component surface and the phosphor converter body surface; and an inorganic coating on and in contact with at least a portion of the particles, at least a portion of the component surface, and at least a portion of the phosphor converter body surface, and a method making such device.Type: GrantFiled: May 6, 2020Date of Patent: February 22, 2022Assignee: Lumileds LLCInventors: Jens Meyer, Hans-Helmut Bechtel, Matthias Heidemann
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Publication number: 20210302003Abstract: The invention describes a light conversion device comprising: a light converter, wherein the light converter is adapted to convert primary light to converted light, wherein a peak emission wavelength of the converted light is in a longer wavelength range than a peak emission wavelength of the primary light, a reflective structure coupled to at least a part of a coupling surface of the light converter, wherein the reflective structure is a narrowband reflector in the sense that is arranged to reflect at least 55% of the primary light impinging on the reflective structure and to transmit at least 50% of the converted light impinging on the reflective structure. The invention further describes a laser-based light source comprising such a light conversion device. The invention further relates to a vehicle headlight comprising the laser-based light source.Type: ApplicationFiled: April 19, 2018Publication date: September 30, 2021Inventors: Claudia Goldmann, Hans-Helmut Bechtel, Matthias Heidemann, Rainald Gierth, Thomas Diederich
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Patent number: 11063189Abstract: A light emitting device comprises an LED emitting ultraviolet or blue light and one or more phosphors excited by the ultraviolet or blue light and in response emitting longer wavelength light to provide a combined phosphor emission spectrum having an emission peak at wavelength ?pk with a full width at half maximum of FWHM. With ?pk and FWHM expressed in nm, 525 nm??pk?0.039*FWHM+492.7 nm. The light emitting device may be used, for example, to signal the autonomous driving state of an automobile.Type: GrantFiled: December 6, 2019Date of Patent: July 13, 2021Assignee: Lumileds LLCInventors: Hans-Helmut Bechtel, Matthias Heidemann, Erik Roeling
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Publication number: 20200411736Abstract: Embodiments include a device having a micro-LED that includes at least two, individually addressable light emitting diodes on a same substrate; a phosphor converter layer disposed on the micro-LED, the phosphor converter layer including phosphor particles having a D50 of greater than 1 ?m and less than 10 ?m.Type: ApplicationFiled: May 29, 2020Publication date: December 31, 2020Inventors: Hans-Helmut BECHTEL, Jens MEYER, Matthias HEIDEMANN, Petra HUPPERTZ, Joerg FELDMANN
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Publication number: 20200388726Abstract: Embodiments include a device having a component with a component surface; a phosphor converter body with a phosphor converter body surface facing the component surface; a plurality of particles between and in contact with the component surface and the phosphor converter body surface; and an inorganic coating on and in contact with at least a portion of the particles, at least a portion of the component surface, and at least a portion of the phosphor converter body surface, and a method making such device.Type: ApplicationFiled: May 6, 2020Publication date: December 10, 2020Inventors: Jens MEYER, Hans-Helmut BECHTEL, Matthias HEIDEMANN
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Publication number: 20200194632Abstract: A light emitting device comprises an LED emitting ultraviolet or blue light and one or more phosphors excited by the ultraviolet or blue light and in response emitting longer wavelength light to provide a combined phosphor emission spectrum having an emission peak at wavelength ?pk with a full width at half maximum of FWHM. With ?pk and FWHM expressed in nm, 525 nm??pk?0.039*FWHM+492.7 nm. The light emitting device may be used, for example, to signal the autonomous driving state of an automobile.Type: ApplicationFiled: December 6, 2019Publication date: June 18, 2020Inventors: Hans-Helmut BECHTEL, Matthias HEIDEMANN, Erik ROELING
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Patent number: 10648632Abstract: A translucent body's first surface is coupled to a top surface of a light converter. The light converter's bottom surface is coupled to a reflective bottom layer. A light coupling structure includes a hole in the reflective bottom layer and at least a slot in the light converter for receiving a light guide, and a light coupling surface for receiving laser light with a laser peak emission wavelength via the light guide. The light coupling surface is arranged so at least 80% of the laser light passing the light coupling surface is received by the translucent body. The translucent body comprises a second surface which is opposite the first surface and is coupled to a reflective top layer for reflecting at least part of the laser light back to the light converter. A peak emission wavelength of the converted light has a longer wavelength than the laser peak emission wavelength.Type: GrantFiled: May 23, 2017Date of Patent: May 12, 2020Assignee: Lumileds LLCInventors: Hans-Helmut Bechtel, Ulrich Hechtfischer, Thomas Diederich, Matthias Heidemann, Niels Jeroen Van Der Veen
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Publication number: 20190137063Abstract: A translucent body's first surface is coupled to a top surface of a light converter. The light converter's bottom surface is coupled to a reflective bottom layer. A light coupling structure includes a hole in the reflective bottom layer and at least a slot in the light converter for receiving a light guide, and a light coupling surface for receiving laser light with a laser peak emission wavelength via the light guide. The light coupling surface is arranged so at least 80% of the laser light passing the light coupling surface is received by the translucent body. The translucent body comprises a second surface which is opposite the first surface and is coupled to a reflective top layer for reflecting at least part of the laser light back to the light converter. A peak emission wavelength of the converted light has a longer wavelength than the laser peak emission wavelength.Type: ApplicationFiled: May 23, 2017Publication date: May 9, 2019Applicant: Lumileds LLCInventors: Hans-Helmut BECHTEL, Ulrich HECHTFISCHER, Thomas DIEDERICH, Matthias HEIDEMANN, Niels Jeroen VAN DER VEEN
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Patent number: 10205066Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18?u??0.25 and 0.42?v??0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x),Gax)5O12 ceramic material, with 0?x?0.6, 0?y?0.5, 0?q<1 and 0.001?z?0.06.Type: GrantFiled: February 15, 2016Date of Patent: February 12, 2019Assignee: Koninklijke Philips N.V.Inventors: Hans-Helmut Bechtel, Oliver Jens Steigelmann, Detlef Uwe Wiechert, Matthias Heidemann
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Patent number: 10014448Abstract: The invention provides a lighting device configured to provide red lighting device light, the lighting device comprising: (i) a first light source configured to provide first light source light having a peak wavelength (?ls); (ii) a first red luminescent material configured to absorb at least part of the first light source light and to convert into first red luminescent material light having a first red emission peak wavelength (?m1), the first red luminescent material having an excitation maximum (?x1); (iii) a second red luminescent material configured to absorb at least part of the first light source light and to convert into second red luminescent material light having a second red emission peak wavelength (?m2), the second red luminescent material having a second excitation maximum (?x2); and wherein the first luminescent material and the second luminescent material are Eu2+ based, and wherein ?m1<?m2, ?x1<?ls and ?x2>?ls.Type: GrantFiled: October 28, 2015Date of Patent: July 3, 2018Assignee: Koninklijke Philips N.V.Inventors: Matthias Heidemann, Hans-Helmut Bechtel, Christoph Martiny, Peter Josef Schmidt
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Patent number: 9966512Abstract: The invention relates to an illumination system having a light scattering and conversion plate comprising a non-converting but scattering layer and a thinner converting layer. By separating scattering and conversion, the characteristics of the illumination system can greatly be increased.Type: GrantFiled: October 28, 2016Date of Patent: May 8, 2018Assignee: Koninklijke Philips N.V.Inventors: Hans-Helmut Bechtel, Matthias Heidemann, Peter J. Schmidt
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Patent number: 9935244Abstract: A method according to embodiments of the invention includes providing a plurality of LEDs attached to a mount. A filter is attached to at least one of the plurality of LEDs. A protective layer is formed over the filter. A reflective layer is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.Type: GrantFiled: July 6, 2016Date of Patent: April 3, 2018Assignee: Koninklijke Philips N.V.Inventors: April Dawn Schricker, Hans-Helmut Bechtel, Kim Kevin Mai, Thomas Diederich, Joost Peter Andre Vogels, Uwe Mackens, Matthias Heidemann
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Publication number: 20180026165Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18?u??0.25 and 0.42?v??0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x), Gax)5O12 ceramic material, with 0?x?0.6, 0?y?0.5, 0?q<1 and 0.001?z?0.06.Type: ApplicationFiled: February 15, 2016Publication date: January 25, 2018Inventors: Hans-Helmut Bechtel, Oliver Jens Steigelmann, Detlef Uwe Wiechert, Matthias Heidemann
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Publication number: 20170331012Abstract: The invention provides a lighting device configured to provide red lighting device light, the lighting device comprising: (i) a first light source configured to provide first light source light having a peak wavelength (?ls); (ii) a first red luminescent material configured to absorb at least part of the first light source light and to convert into first red luminescent material light having a first red emission peak wavelength (?m1), the first red luminescent material having an excitation maximum (?x1); (iii) a second red luminescent material configured to absorb at least part of the first light source light and to convert into second red luminescent material light having a second red emission peak wavelength (?m2), the second red luminescent material having a second excitation maximum (?x2); and wherein the first luminescent material and the second luminescent material are Eu2+ based, and wherein ?m1<?m2, ?x1<?ls and ?x2>?ls.Type: ApplicationFiled: October 28, 2015Publication date: November 16, 2017Inventors: Matthias Heidemann, Hans-Helmut Bechtel, Christoph Martiny, Peter Josef Schmidt
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Patent number: 9711688Abstract: A light emission device comprising a light emitting element, a wavelength conversion (e.g. phosphor) element, and a filter that reduces Color over Angle (CoA) effects by at least partially reflecting light from the light emitting element that strike the filter at near-normal angles of incidence. In some embodiments, a combined phosphor and filter layer is formed over the LED die. The filter may comprise a dispersion of self-aligning moieties, such as dielectric platelets in a film that is vacuum laminated to the LED structure. Xirallic® Galaxy Blue pigment, comprising an aluminum oxide core coated on both sides with thin films of SnO2, and TiO2, and Ronastar® Blue, comprising Calcium Aluminum Borosilicate and TiO2 may provide the dielectric platelets.Type: GrantFiled: October 17, 2014Date of Patent: July 18, 2017Assignee: Koninklijke Philips N.V.Inventors: Daniel Roitman, Mark Melvin Butterworth, Matthias Heidemann, Hans Helmut Bechtel, Danielle Russell Chamberlin, Joan Liu
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Publication number: 20170047491Abstract: The invention relates to an illumination system having a light scattering and conversion plate comprising a non-converting but scattering layer and a thinner converting layer. By separating scattering and conversion, the characteristics of the illumination system can greatly be increased.Type: ApplicationFiled: October 28, 2016Publication date: February 16, 2017Inventors: Hans-Helmut Bechtel, Matthias Heidemann, Peter J. Schmidt
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Patent number: 9543478Abstract: A method according to embodiments of the invention includes providing a plurality of LEDs (60) attached to a mount (62). A filter (102) is attached to at least one of the plurality of LEDs. A protective layer (104) is formed over the filter. A reflective layer (74) is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.Type: GrantFiled: October 25, 2013Date of Patent: January 10, 2017Assignee: Koninklijke Philips N.V.Inventors: April Dawn Schricker, Hans-Helmut Bechtel, Kim Kevin Mai, Thomas Diederich, Joost Peter Andre Vogels, Uwe Mackens, Matthias Heidemann
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Patent number: 9482411Abstract: The invention relates to an illumination system having a light scattering and conversion plate comprising a non-converting but scattering layer and a thinner converting layer. By separating scattering and conversion, the characteristics of the illumination system can greatly be increased.Type: GrantFiled: March 25, 2014Date of Patent: November 1, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Hans-Helmut Bechtel, Matthias Heidemann, Peter J. Schmidt