Patents by Inventor Joerg Wunderlich
Joerg Wunderlich 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: 10732423Abstract: The invention relates to a device (102) for optical beam expansion of an optical system having a guide tube (220), a first guide cylinder (222) having a first lens (226), wherein the first guide cylinder (202) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220), and a second guide cylinder (224) having a second lens (228), wherein the second guide cylinder (224) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220). A first displacement device is provided to displace the first guide cylinder (222) along the longitudinal axis (340) of the guide tube (220), and a second displacement device is provided to displace the second guide cylinder (224) along the longitudinal axis of the guide tube (220).Type: GrantFiled: June 22, 2016Date of Patent: August 4, 2020Assignee: JENOPTIK Optical Systems GmbHInventors: Juergen Weise, Birgit Massino, Joerg Wunderlich, Tim Baldsiefen, Jan Werschnik
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Publication number: 20190155038Abstract: The invention relates to a device (102) for optical beam expansion of an optical system having a guide tube (220), a first guide cylinder (222) having a first lens (226), wherein the first guide cylinder (202) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220), and a second guide cylinder (224) having a second lens (228), wherein the second guide cylinder (224) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220). A first displacement device is provided to displace the first guide cylinder (222) along the longitudinal axis (340) of the guide tube (220), and a second displacement device is provided to displace the second guide cylinder (224) along the longitudinal axis of the guide tube (220).Type: ApplicationFiled: June 22, 2016Publication date: May 23, 2019Applicant: JENOPTIK Optical Systems GmbHInventors: Juergen WEISE, Birgit MASSINO, Joerg WUNDERLICH, Tim BALDSIEFEN, Jan WERSCHNIK
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Patent number: 9442272Abstract: An F-theta objective is provided that has five individual lenses with a first individual lens as biconcave lens with a focal length, a second individual lens as meniscus with a focal length, a third individual lens as meniscus with a focal length, a fourth individual lens as a biconvex lens with a focal length and a fifth individual lens as a plano-convex lens with a focal length and a total focal length f of the F-theta objective. A ratio between the focal lengths to the total focal length satisfies predetermined conditions.Type: GrantFiled: July 16, 2014Date of Patent: September 13, 2016Assignee: JENOPTIK Optical Systems GmbHInventor: Joerg Wunderlich
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Patent number: 9093163Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: GrantFiled: January 14, 2010Date of Patent: July 28, 2015Assignees: HITACHI, LTD., UNIVERSITE PARIS SUD XI, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Joerg Wunderlich, Jan Zemen, Claude Chappert, Bryan Gallagher, Thibaut Devolder, David Williams
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Patent number: 9000433Abstract: A device comprising a channel for charge carriers comprising non-ferromagnetic semiconducting in which charge carriers exhibit spin-orbit coupling, a region of semiconducting material of opposite conductivity type to the channel and configured so as to form a junction with the channel for injecting spin-polarized charge carriers into an end of the channel and at least one lead connected to the channel for measuring a transverse voltage across the channel.Type: GrantFiled: August 21, 2009Date of Patent: April 7, 2015Assignee: Hitachi, Ltd.Inventors: Joerg Wunderlich, Tomas Jungwirth, Andrew Irvine, Jairo Sinova
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Publication number: 20150022899Abstract: An F-theta objective is provided that has five individual lenses with a first individual lens as biconcave lens with a focal length, a second individual lens as meniscus with a focal length, a third individual lens as meniscus with a focal length, a fourth individual lens as a biconvex lens with a focal length and a fifth individual lens as a plano-convex lens with a focal length and a total focal length f of the F-theta objective. A ratio between the focal lengths to the total focal lengthsatisfies predetermined conditions.Type: ApplicationFiled: July 16, 2014Publication date: January 22, 2015Inventor: Joerg WUNDERLICH
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Patent number: 8879171Abstract: An F-theta objective which is color-corrected for a wavelength range of 1065-1075 nm and is suitable for high laser outputs of more than 1 kW, having sixth individual lenses L1-L6, wherein the lenses are formed of at least two different materials.Type: GrantFiled: March 21, 2013Date of Patent: November 4, 2014Assignee: JENOPTIK Optical Systems GmbHInventors: Joerg Wunderlich, Ullrich Krueger
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Publication number: 20140169084Abstract: A memory device is described. The memory device comprises an antiferromagnet. The device may comprise an insulator and an electrode arranged in a tunnel junction configuration. Alternatively, the device may comprise first and second contacts to the antiferromagnet for measuring ohmic resistance of the antiferromagnet. The antiferromagnet is not coupled to any ferromagnet. The state of the antiferromagnet can be set by heating the junction to a temperature at or above a critical temperature at which is possible to re-orientate magnetic moments in the antiferromagnet, applying an external magnetic field and then cooling the antiferromagnet to a temperature below the critical temperature.Type: ApplicationFiled: December 6, 2013Publication date: June 19, 2014Applicant: HITACHI, LTD.Inventors: Joerg WUNDERLICH, Xavier MARTI, Tomas JUNGWIRTH
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Publication number: 20130279027Abstract: An F-theta objective which is color-corrected for a wavelength range of 1065-1075 nm and is suitable for high laser outputs of more than 1 kW, having sixth individual lenses L1-L6, wherein the lenses are formed of at least two different materials.Type: ApplicationFiled: March 21, 2013Publication date: October 24, 2013Inventors: Joerg WUNDERLICH, Ullrich KRUEGER
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Patent number: 8138758Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: GrantFiled: March 18, 2008Date of Patent: March 20, 2012Assignees: Hitachi, Ltd., Universite Paris Sud XI, Centre National de la Recherche ScientifiqueInventors: Joerg Wunderlich, Tomas Jungwirth, Jan Zemen, Bryan Gallagher, Claude Chappert, Thibaut Devolder
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Patent number: 8125742Abstract: A Lorentz Magnetoresistive sensor having an extremely small lead width and lead spacing is disclosed. The sensor can be constructed by a novel fabrication method that allows the leads to be deposited in such a manner that lead width and spacing between the leads is determined by the as deposited thicknesses of the lead layers and electrically insulating spacer layers between the leads rather than by photolithography. Because the lead thicknesses and lead spacings are not defined photolithograhically, the lead thickness and lead spacing are not limited by photolithographic resolution limits.Type: GrantFiled: September 18, 2007Date of Patent: February 28, 2012Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich
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Patent number: 8035932Abstract: A Lorentz magnetoresistive sensor having integrated signal amplification. The sensor is constructed upon a substrate such as a semiconductor material, and an amplification circuit such as transistor is constructed directly into the substrate on which the magnetoresistive device is constructed. This integrated signal amplification greatly enhances sensor performance by eliminating a great deal of signal noise that would otherwise be added to the read signal.Type: GrantFiled: September 20, 2007Date of Patent: October 11, 2011Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich
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Publication number: 20110170339Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Inventors: Joerg Wunderlich, Jan Zemen, Claude Chappert, Bryan Gallagher, Thibaut Devolder, David Williams
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Patent number: 7939870Abstract: A magnetoresistive device comprises a ferromagnetic region, a non-ferromagnetic region, an insulating region and a conductive region. The insulating region is arranged between the ferromagnetic region and the conductive region so as to provide a tunnel barrier. The non-ferromagnetic region separates the insulating region and the ferromagnetic region.Type: GrantFiled: November 26, 2008Date of Patent: May 10, 2011Assignee: Hitachi, Ltd.Inventors: Joerg Wunderlich, Byong Guk Park, Alexander Shick, Tomas Jungwirth, Frantisek Maca
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Publication number: 20110103138Abstract: A single-electron transistor (1) has an elongate conductive channel (2) and a side gate (3) formed in a 5 nm-thick layer (4) of Ga0.98Mn0.02As. The single-electron transistor (1) is operable, in a first mode, as a transistor and, in a second mode, as non-volatile memory.Type: ApplicationFiled: November 16, 2010Publication date: May 5, 2011Inventors: Jörg WUNDERLICH, David Williams, Thomas Jungwirth, Andrew Irvine, Bryan Gallagher
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Patent number: 7893426Abstract: A single-electron transistor (1) has an elongate conductive channel (2) and a side gate (3) formed in a 5 nm-thick layer (4) of Ga0.98Mn0.02As. The single-electron transistor (1) is operable, in a first mode, as a transistor and, in a second mode, as non-volatile memory.Type: GrantFiled: August 9, 2006Date of Patent: February 22, 2011Assignee: Hitachi LimitedInventors: Jörg Wunderlich, David Williams, Tomas Jungwirth, Andrew Irvine, Bryan Gallagher
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Publication number: 20100123133Abstract: A device comprising a channel for charge carriers comprising non-ferromagnetic semiconducting in which charge carriers exhibit spin-orbit coupling, a region of semiconducting material of opposite conductivity type to the channel and configured so as to form a junction with the channel for injecting spin-polarised charge carriers into an end of the channel and at least one lead connected to the channel for measuring a transverse voltage across the channel.Type: ApplicationFiled: August 21, 2009Publication date: May 20, 2010Inventors: Joerg Wunderlich, Tomas JUNGWIRTH, Andrew IRVINE, Jairo SINOVA
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Patent number: 7554834Abstract: A conduction control device comprises a first ferromagnetic region having relatively high coercivity, a second ferromagnetic region having relatively low coercivity and a junction region disposed between the first and second ferromagnetic regions. The device also comprises a gate for applying a field to the junction region so as to control charge carrier density within the junction region.Type: GrantFiled: March 23, 2006Date of Patent: June 30, 2009Assignee: Hitachi, Ltd.Inventors: Jörg Wunderlich, Kenchi Ito
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Publication number: 20090146232Abstract: A magnetoresistive device comprises a ferromagnetic region, a non-ferromagnetic region, an insulating region and a conductive region. The insulating region is arranged between the ferromagnetic region and the conductive region so as to provide a tunnel barrier. The non-ferromagnetic region separates the insulating region and the ferromagnetic region.Type: ApplicationFiled: November 26, 2008Publication date: June 11, 2009Inventors: Joerg Wunderlich, Byong Guk Park, Alexander Shick, Tomas Jungwirth, Frantisek Maca
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Publication number: 20090080118Abstract: A Lorentz magnetoresistive sensor having integrated signal amplification. The sensor is constructed upon a substrate such as a semiconductor material, and an amplification circuit such as transistor is constructed directly into the substrate on which the magnetoresistive device is constructed. This integrated signal amplification greatly enhances sensor performance by eliminating a great deal of signal noise that would otherwise be added to the read signal.Type: ApplicationFiled: September 20, 2007Publication date: March 26, 2009Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich