Patents by Inventor Arttu Luukanen
Arttu Luukanen 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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Publication number: 20190383934Abstract: A method for capturing images of a person for a security screening is provided. A spatial position of the person is detected using a support sensor. Information indicative of the detected spatial position of the person is then received and used to steer a field of view of at least a first set of imaging heads towards the detected spatial position of the person. The at least a first set of imaging heads includes at least one passive imaging head and at least one active imaging head, wherein the passive imaging head captures separate images corresponding to at least two frequency bands at a same time. Images of the person are then captured with the at least a first set of imaging heads.Type: ApplicationFiled: November 28, 2017Publication date: December 19, 2019Inventors: Arttu Luukanen, Henrik Petersson, Roger Appleby, Duncan Robertson, Juha Hassel
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Patent number: 10495585Abstract: An imaging apparatus that includes a scanning mirror arrangement, optics, and a detector arrangement comprising a plurality of detectors. The plurality of detectors are capable for detecting submillimeter-/millimeter-range electromagnetic radiation and arranged within a region defined by an outer periphery and an inner periphery of the detector arrangement. The outer and inner peripheries are substantially circular in shape.Type: GrantFiled: November 29, 2016Date of Patent: December 3, 2019Assignee: ASQELLA OYInventors: Arttu Luukanen, Mikko Leivo, Anssi Rautiainen, Aleksi Tamminen
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Patent number: 10411345Abstract: To increase efficiency of optical control of phase shifting elements, arrangements comprising optical lenses are presented. The optical lenses may be arranged in reflective arrays so as to focus light from a light source on a phase shifting element, which may be placed in a feed point of an antenna, such as for example a lithographic antenna. In some embodiments, thus both optical controlling radiation and radio frequency, RF, power are concentrated in substantially the same place.Type: GrantFiled: December 2, 2014Date of Patent: September 10, 2019Assignee: Teknologian tutkimuskeskus VTT OyInventor: Arttu Luukanen
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Patent number: 10145743Abstract: A superconducting thermal detector (bolometer) of THz (sub-millimeter) wave radiation based on sensing the change in the amplitude or phase of a resonator circuit, consisting of a capacitor (Csh) and a superconducting temperature dependent inductor where the said inductor is thermally isolated from the heat bath (chip substrate) by micro-suspensions. The bolometer design includes a thin film inductor located on the membrane, a single or/and multi-layered thin film capacitor, and a thin film absorber of incoming radiation. The bolometer design can also include a lithographic antenna with antenna termination and/or a back reflector beneath the membrane for optimal wavelength detection by the resonance circuit. The superconducting thermal detector (bolometer) and arrays of these detectors operate in a temperature range from 1 Kelvin to 10 Kelvin.Type: GrantFiled: March 4, 2014Date of Patent: December 4, 2018Assignee: Teknologian tutkimuskeskus VTT OyInventors: Andrey Timofeev, Juha Hassel, Arttu Luukanen, Panu Helistö, Leif Grönberg
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Publication number: 20170160210Abstract: An imaging apparatus that includes a scanning mirror arrangement, optics, and a detector arrangement comprising a plurality of detectors. The plurality of detectors are capable for detecting submillimeter-/millimeter-range electromagnetic radiation and arranged within a region defined by an outer periphery and an inner periphery of the detector arrangement. The outer and inner peripheries are substantially circular in shape.Type: ApplicationFiled: November 29, 2016Publication date: June 8, 2017Inventors: Arttu Luukanen, Mikko Leivo, Anssi Rautiainen, Aleksi Tamminen
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Publication number: 20160308278Abstract: To increase efficiency of optical control of phase shifting elements, arrangements comprising optical lenses are presented. The optical lenses may be arranged in reflective arrays so as to focus light from a light source on a phase shifting element, which may be placed in a feed point of an antenna, such as for example a lithographic antenna. In some embodiments, thus both optical controlling radiation and radio frequency, RF, power are concentrated in substantially the same place.Type: ApplicationFiled: December 2, 2014Publication date: October 20, 2016Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OYInventor: Arttu Luukanen
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Publication number: 20160018267Abstract: A superconducting thermal detector (bolometer) of THz (sub-millimeter) wave radiation based on sensing the change in the amplitude or phase of a resonator circuit, consisting of a capacitor (Csh) and a superconducting temperature dependent inductor where the said inductor is thermally isolated from the heat bath (chip substrate) by micro-suspensions. The bolometer design includes a thin film inductor located on the membrane, a single or/and multi-layered thin film capacitor, and a thin film absorber of incoming radiation. The bolometer design can also include a lithographic antenna with antenna termination and/or a back reflector beneath the membrane for optimal wavelength detection by the resonance circuit. The superconducting thermal detector (bolometer) and arrays of these detectors operate in a temperature range from 1 Kelvin to 10 Kelvin.Type: ApplicationFiled: March 4, 2014Publication date: January 21, 2016Inventors: Andrey Timofeev, Juha Hassel, Arttu Luukanen, Panu Helistö, Leif Grönberg
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Patent number: 8063369Abstract: The invention relates to a bolometer element, a bolometer cell, a bolometer camera, and a method for reading a bolometer cell. The bolometer cell comprises several bolometer elements. Each bolometer element comprises a first bolometer having a first heating resistance for sensing radiation power acting on the element, and a second bolometer having a second heating resistance, and in each bolometer element the first and second bolometers are electrically connected to each other in such a way that the heating resistance (611) of the first bolometer can be biased with the aid of a voltage through the heating resistance of the second bolometer in order to amplify the radiation power detected with the aid of the connection. With the aid of the invention, it is possible to implement an extremely sensitive bolometer camera.Type: GrantFiled: February 14, 2008Date of Patent: November 22, 2011Assignee: Valtion Teknillinen TutkimuskeskusInventors: Heikki Seppä, Panu Helistö, Arttu Luukanen
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Publication number: 20110254959Abstract: The invention relates to a bolometer element, a bolometer cell, a bolometer camera, and a method for reading a bolometer cell. The bolometer cell comprises several bolometer elements. Each bolometer element comprises a first bolometer having a first heating resistance for sensing radiation power acting on the element, and a second bolometer having a second heating resistance, and in each bolometer element the first and second bolometers are electrically connected to each other in such a way that the heating resistance (611) of the first bolometer can be biased with the aid of a voltage through the heating resistance of the second bolometer in order to amplify the radiation power detected with the aid of the connection. With the aid of the invention, it is possible to implement an extremely sensitive bolometer camera.Type: ApplicationFiled: February 14, 2008Publication date: October 20, 2011Applicant: Valtion Teknillinen TutkimuskeskusInventors: Heikki Seppa, Panu Helisto, Arttu Luukanen
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Patent number: 7078695Abstract: An antenna-coupled microbolometer structure comprises a substrate (301), an antenna (102, 103) supported by the substrate, and a thermally sensitive element (101, 305) connected to the antenna and arranged to dissipate electric currents induced into the antenna. Both the antenna (102, 103) and the thermally sensitive element (101, 305) comprise material that is susceptible to achieving a superconductive state below a certain critical temperature. The thermally sensitive element (101, 305) is supported at a distance from the substrate (301) leaving an empty gap (306) between the thermally sensitive element (101, 305) and a surface of the substrate (301).Type: GrantFiled: May 23, 2003Date of Patent: July 18, 2006Assignee: Oxford Instruments Analytical OyInventor: Arttu Luukanen
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Publication number: 20030222217Abstract: An antenna-coupled microbolometer structure comprises a substrate (301), an antenna (102, 103) supported by the substrate, and a thermally sensitive element (101, 305) connected to the antenna and arranged to dissipate electric currents induced into the antenna. Both the antenna (102, 103) and the thermally sensitive element (101, 305) comprise material that is susceptible to achieving a superconductive state below a certain critical temperature. The thermally sensitive element (101, 305) is supported at a distance from the substrate (301) leaving an empty gap (306) between the thermally sensitive element (101, 305) and a surface of the substrate (301).Type: ApplicationFiled: May 23, 2003Publication date: December 4, 2003Applicant: Metorex International OyInventor: Arttu Luukanen
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Patent number: 6242740Abstract: The invention relates to detection performed over millimeter and submillimeter wavelengths, especially to imaging solutions functioning over a submillimeter-wavelength range. The system of the invention uses detectors, comprising antenna coupled bolometers together with wavelength selective optics. The detector matrix is preferably curved for reducing the number of imaging errors. In order to provide a curved detector matrix, the detector matrix is constituted by flat submatrices, each being provided with one or more integrated antenna coupled bolometers. The detectable frequency range is preferably limited in two stages, first by means of wavelength selective optics and secondly by means of the operating band of the antenna of an antenna coupled bolometer. In order to focus the incoming radiation on bolometers, the bolometer substrate is fitted or the surface or interior of the bolometer substrate is provided with a bolometer lens or a corresponding optical element in alignment with each bolometer.Type: GrantFiled: September 11, 1998Date of Patent: June 5, 2001Assignee: Metorex International OyInventors: Arttu Luukanen, Heikki Sipila, Veli-Pekka Viitanen