Patents by Inventor Hallvard Angelskår
Hallvard Angelskår 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: 11240607Abstract: An optical microphone assembly comprises a rigid substrate; an interferometric arrangement, a light source, at least one photo detector and an enclosure. The interferometric arrangement comprises a membrane and at least one optical element spaced from the membrane, wherein the at least one optical element comprises a surface of the substrate and/or is disposed on a surface of the substrate. The light source is arranged to provide light to the interferometric arrangement such that a first portion of the light propagates along a first optical path via the interferometric arrangement and a second portion of the light propagates along a second different optical path via the interferometric arrangement, thereby giving rise to an optical path difference between the first and second optical paths which depends on a distance between the membrane and the optical element.Type: GrantFiled: May 15, 2019Date of Patent: February 1, 2022Assignee: SINTEF TTO ASInventors: Hallvard Angelskår, Thor Bakke, Ib-Rune Johansen, Matthieu Lacolle, Jakob Vennerød, Andreas Vogl, Dag Wang
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Publication number: 20210274291Abstract: An optical microphone assembly comprises a rigid substrate; an interferometric arrangement, a light source, at least one photo detector and an enclosure. The interferometric arrangement comprises a membrane and at least one optical element spaced from the membrane, wherein the at least one optical element comprises a surface of the substrate and/or is disposed on a surface of the substrate. The light source is arranged to provide light to the interferometric arrangement such that a first portion of the light propagates along a first optical path via the interferometric arrangement and a second portion of the light propagates along a second different optical path via the interferometric arrangement, thereby giving rise to an optical path difference between the first and second optical paths which depends on a distance between the membrane and the optical element.Type: ApplicationFiled: May 15, 2019Publication date: September 2, 2021Inventors: Hallvard Angelskår, Thor Bakke, Ib-Rune Johansen, Matthieu Lacolle, Jakob Vennerød, Andreas Vogl, Dag Wang
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Patent number: 10677653Abstract: This invention relates to a source for emitting radiation in the infrared range comprising a thin membrane including a radiation element made from a semi-conductive material having a chosen dopant, the radiation element being connected to a frame, the frame comprising connector means for connecting to a power source for conducting an electrical current through the substrate, the radiation element being provided with a periodic modulation of the refractive index constituting a photonic crystal having a chosen period, thus defining an optical resonator at one or more chosen wavelengths, and wherein the membrane is mounted to the substrate through a number of conductor beams distributed along the membrane circumference so as to provide an even current distribution and thus even heating over the membrane.Type: GrantFiled: October 5, 2016Date of Patent: June 9, 2020Assignee: SINTEF TTO ASInventors: Jo Gjessing, Jon Olav Grepstad, Hallvard Angelskår, Aasmund Sudbø, Thor Bakke, Zeljko Skokic
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Patent number: 10670622Abstract: The present invention relates to a displacement sensor device and the system including the device, wherein the device comprises a first at least partially transparent plane surface with a first diffraction pattern and a second plane surface comprising a second reflecting diffraction pattern. The diffractive patterns being adapted to diffract light within a chosen range of wavelengths, the second surface being positioned below and parallel to the first surface constituting a pair wherein said first and second diffractive patterns being essentially equal, the device also comprising displacement means for allowing a movement in a direction parallel to said surfaces, the device thus providing a movement sensitive diffraction pattern.Type: GrantFiled: January 18, 2019Date of Patent: June 2, 2020Assignee: PGS Geophysical ASInventors: Ib-Rune Johansen, Matthieu Lacolle, Thor Bakke, Andreas Vogl, Dag Thorstein Wang, Sverre Knudsen, Odd Løvhaugen, Hallvard Angelskår, Zeljko Skokic
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Publication number: 20190154726Abstract: The present invention relates to a displacement sensor device and the system including the device, wherein the device comprises a first at least partially transparent plane surface with a first diffraction pattern and a second plane surface comprising a second reflecting diffraction pattern. The diffractive patterns being adapted to diffract light within a chosen range of wavelengths, the second surface being positioned below and parallel to the first surface constituting a pair wherein said first and second diffractive patterns being essentially equal, the device also comprising displacement means for allowing a movement in a direction parallel to said surfaces, the device thus providing a movement sensitive diffraction pattern.Type: ApplicationFiled: January 18, 2019Publication date: May 23, 2019Applicant: PGS Geophysical ASInventors: Ib-Rune Johansen, Matthieu Lacolle, Thor Bakke, Andreas Vogl, Dag Thorstein Wang, Sverre Knudsen, Odd Løvhaugen, Hallvard Angelskår, Zeljko Skokic
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Patent number: 10197589Abstract: The present invention relates to a displacement sensor device and the system including the device, wherein the device comprises a first at least partially transparent plane surface with a first diffraction pattern and a second plane surface comprising a second reflecting diffraction pattern. The diffractive patterns being adapted to diffract light within a chosen range of wavelengths, the second surface being positioned below and parallel to the first surface constituting a pair wherein said first and second diffractive patterns being essentially equal, the device also comprising displacement means for allowing a movement in a direction parallel to said surfaces, the device thus providing a movement sensitive diffraction pattern.Type: GrantFiled: February 26, 2015Date of Patent: February 5, 2019Assignee: PGS Geophysical ASInventors: Ib-Rune Johansen, Matthieu Lacolle, Thor Bakke, Andreas Vogl, Dag Thorstein Wang, Sverre Knudsen, Odd Løvhaugen, Hallvard Angelskår, Zeljko Skokic
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Publication number: 20180335345Abstract: This invention relates to a source for emitting radiation in the infrared range comprising a thin membrane including a radiation element made from a semi-conductive material having a chosen dopant, the radiation element being connected to a frame, the frame comprising connector means for connecting to a power source for conducting an electrical current through the substrate, the radiation element being provided with a periodic modulation of the refractive index constituting a photonic crystal having a chosen period, thus defining an optical resonator at one or more chosen wavelengths, and wherein the membrane is mounted to the substrate through a number of conductor beams distributed along the membrane circumference so as to provide an even current distribution and thus even heating over the membrane.Type: ApplicationFiled: October 5, 2016Publication date: November 22, 2018Applicant: SINTEF TTO ASInventors: Jo GJESSING, Jon Olav GREPSTAD, Hallvard ANGELSKÅR, Aasmund SUDBØ, Thor BAKKE, Zeljko SKOKIC
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Publication number: 20170016931Abstract: The present invention relates to a displacement sensor device and the system including the device, wherein the device comprises a first at least partially transparent plane surface with a first diffraction pattern and a second plane surface comprising a second reflecting diffraction pattern. The diffractive patterns being adapted to diffract light within a chosen range of wavelengths, the second surface being positioned below and parallel to the first surface constituting a pair wherein said first and second diffractive patterns being essentially equal, the device also comprising displacement means for allowing u movement in a direction parallel to said surfaces, the device thus providing a movement sensitive diffraction pattern.Type: ApplicationFiled: February 26, 2015Publication date: January 19, 2017Applicant: PGS Geophysical ASInventors: Ib-Rune Johansen, Matthieu Lacolle, Thor Bakke, Andreas Vogl, Dag Thorstein Wang, Sverre Knudsen, Odd Løvhaugen, Hallvard Angelskår, Zeljko Skokic