Patents by Inventor Jussi Tenhunen
Jussi Tenhunen 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: 11965779Abstract: An apparatus for measuring time-resolved optical spectrum includes a light source, a sensor for collecting, forming, manipulating and measuring the intensity of the optical radiation, and a controller coupled to the light source and sensor. The sensor includes at least one optical delay element to provide a time delay to a first portion of the optical radiation. The sensor arrangement further includes an optical spectral disperser to split the delayed first portion and the second portion of the optical radiation into dispersed radiation having a plurality of wavelengths, and a sensor element configured to receive each wavelength of the dispersed radiation on a different spatial region, and measure the light intensity associated with each wavelength of the dispersed radiation. The controller collects the light intensity associated with each wavelength of the dispersed radiation measured by the sensor element to form a time-resolved optical spectrum.Type: GrantFiled: October 28, 2020Date of Patent: April 23, 2024Assignee: TimeGate Instruments OyInventors: Lauri Kurki, Ilkka Alasaarela, Jussi Tenhunen
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Patent number: 11929815Abstract: A system (1) for beamforming of incoming radio-frequency signals is provided. The system includes at least one digital signal processor, DSP, a plurality of analogue-to-digital converters, ADC, each connected to the at least one DSP. Further, the system comprises a plurality of sample-and-hold, S&H, circuit groups, each comprising a plurality of sample-and-hold circuits additively connected to a respective ADC and a plurality of receiving antenna connections each connected to a respective S&H circuit in each group at one end and each antenna connection connected to a respective antenna. The system is configured to selectively alternate between a plurality of beamforming functionalities, wherein the receiver system is arranged to time-interleave the ADCs and control specific S&H circuits in each S&H group by at least one of time-interleave or disable specific S&H circuits depending on a set beamforming functionality. An associated method (100) is also provided.Type: GrantFiled: November 19, 2021Date of Patent: March 12, 2024Assignee: SAAB ABInventors: Kalle Spoof, Marko Kosunen, Jussi Ryynanen, Miikka Tenhunen, Vishnu Unnikrishnan, Kari Stadius
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Publication number: 20220373392Abstract: An apparatus for measuring time-resolved optical spectrum includes a light source, a sensor for collecting, forming, manipulating and measuring the intensity of the optical radiation, and a controller coupled to the light source and sensor. The sensor includes at least one optical delay element to provide a time delay to a first portion of the optical radiation. The sensor arrangement further includes an optical spectral disperser to split the delayed first portion and the second portion of the optical radiation into dispersed radiation having a plurality of wavelengths, and a sensor element configured to receive each wavelength of the dispersed radiation on a different spatial region, and measure the light intensity associated with each wavelength of the dispersed radiation. The controller collects the light intensity associated with each wavelength of the dispersed radiation measured by the sensor element to form a time-resolved optical spectrum.Type: ApplicationFiled: October 28, 2020Publication date: November 24, 2022Applicant: TimeGate Instruments OyInventors: Lauri Kurki, Ilkka Alasaarela, Jussi Tenhunen
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Patent number: 10444143Abstract: Optical multi-channel measurement unit for a process measurement includes first ends for receiving optical radiation from the optical radiation source, and second ends for outputting the optical radiation for illuminating the at least one object. Optical detectors receive optical radiation from at least one measurement channel via at least one optical filter and convert an intensity of the optical radiation to an electrical signal. A movement mechanism causes, for filtering the wavelengths of the optical radiation propagating between detectors and the optical measurement channels through the optical filters, at least one of the following: movement inside at least one optical filter and movement between the filters and the detectors.Type: GrantFiled: June 24, 2015Date of Patent: October 15, 2019Assignee: VALMET AUTOMATION OYInventors: Markku Mäntylä, Pekka Suopajärvi, Jussi Tenhunen, Janne Paaso
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Patent number: 10371641Abstract: An apparatus, includes an illuminating light source and illuminating optics arranged to illuminate a sample region with illuminating light pulses, light gathering optics to gather Raman scattered light pulses from the sample region, a spectral disperser and a detector array for measuring the spectral intensity distribution of Raman scattered light pulses obtained from the sample region and an auxiliary detector for providing an indicator signal indicative of elastic scattering coefficient of the sample region. The apparatus is arranged to form a first output spectrum from the spectral intensity distribution of a first group of Raman scattered light pulses. The pulses of the first group of Raman scattered light pulses are obtained from the sample region when the indicator signal indicates that an object is located in the sample region.Type: GrantFiled: January 20, 2017Date of Patent: August 6, 2019Assignee: TimeGate Instruments OyInventors: Juha Kostamovaara, Ilkka Nissinen, Jan Nissinen, Rami Aikio, Jussi Tenhunen, Lauri Kurki
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Patent number: 9772228Abstract: A device and a method for optical measurement of a target, wherein the target is irradiated with radiation beam (15) and a measurement beam (27) is received from the target and detected. Commonly used absorbance, reflectance and fluorescence measurements do not provide adequate information in e.g. measuring small contents of sulphur compounds. The present solution provides a new Raman spectrometer which is suitable for mass applications. A target is activated with pulses of a laser diode (12). The Raman signatures are measured and integrated successively with a point detector (44). A Fabry-Perot interferometer (42) on the measurement path is successively controlled into corresponding pass bands. While high spectral resolution or range is not required it is possible to use small-sized and low cost components.Type: GrantFiled: October 21, 2014Date of Patent: September 26, 2017Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OYInventors: Jarkko Antila, Jussi Tenhunen
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Publication number: 20170234797Abstract: An apparatus, includes an illuminating light source and illuminating optics arranged to illuminate a sample region with illuminating light pulses, light gathering optics to gather Raman scattered light pulses from the sample region, a spectral disperser and a detector array for measuring the spectral intensity distribution of Raman scattered light pulses obtained from the sample region and an auxiliary detector for providing an indicator signal indicative of elastic scattering coefficient of the sample region. The apparatus is arranged to form a first output spectrum from the spectral intensity distribution of a first group of Raman scattered light pulses. The pulses of the first group of Raman scattered light pulses are obtained from the sample region when the indicator signal indicates that an object is located in the sample region.Type: ApplicationFiled: January 20, 2017Publication date: August 17, 2017Inventors: Juha KOSTAMOVAARA, Ilkka NISSINEN, Jan NISSINEN, Rami AIKIO, Jussi TENHUNEN, Lauri KURKI
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Publication number: 20170160192Abstract: Optical multi-channel measurement unit for a process measurement includes first ends for receiving optical radiation from the optical radiation source, and second ends for outputting the optical radiation for illuminating the at least one object. Optical detectors receive optical radiation from at least one measurement channel via at least one optical filter and convert an intensity of the optical radiation to an electrical signal. A movement mechanism causes, for filtering the wavelengths of the optical radiation propagating between detectors and the optical measurement channels through the optical filters, at least one of the following: movement inside at least one optical filter and movement between the filters and the detectors.Type: ApplicationFiled: June 24, 2015Publication date: June 8, 2017Applicant: VALMET AUTOMATION OYInventors: Markku MÄNTYLÄ, Pekka SUOPAJÄRVI, Jussi TENHUNEN, Janne PAASO
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Publication number: 20160252394Abstract: A device and a method for optical measurement of a target, wherein the target is irradiated with radiation beam (15) and a measurement beam (27) is received from the target and detected. Commonly used absorbance, reflectance and fluorescence measurements do not provide adequate information in e.g. measuring small contents of sulphur compounds. The present solution provides a new Raman spectrometer which is suitable for mass applications. A target is activated with pulses of a laser diode (12). The Raman signatures are measured and integrated successively with a point detector (44). A Fabry-Perot interferometer (42) on the measurement path is successively controlled into corresponding pass bands. While high spectral resolution or range is not required it is possible to use small-sized and low cost components.Type: ApplicationFiled: October 21, 2014Publication date: September 1, 2016Inventors: Jarkko ANTILA, Jussi TENHUNEN
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Patent number: 9395247Abstract: An apparatus comprises a semiconductor single-photon avalanche detector, and a counter. The detector performs detections of photons of optical radiation caused by an optical excitation pulse to the object. The counter measures timing of each detection made in the detector with respect to the excitation pulse causing the detected photons, and performs at least one of the following: forming a number of Raman detections, forming a number of fluorescence detections. Forming the number of the Raman detections is performed by eliminating an estimate of a number of fluorescence photons in the measurement. Forming the number of the fluorescence detections is performed by eliminating an estimate of a number of Raman photons in the measurement. The estimates are formed in a predetermined manner from the number and timing of the detections.Type: GrantFiled: February 13, 2014Date of Patent: July 19, 2016Assignees: Oulun Yliopisto, Teknologian Tutkimuskeskus VTTInventors: Juha Kostamovaara, Jussi Tenhunen
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Patent number: 9261404Abstract: An apparatus and method using the apparatus for measuring target samples, particularly pharmaceutical products using Raman radiation. The sample is located in an aperture in a wall structure with a reflective surface on one or both of the sides of the wall structure facing respectively the excitation radiation transmitter or the Raman radiation detector. Preferably two reflective surfaces each in hemispherical shape and facing each other in a spherical arrangement are provided, with the wall structure across the diameter of the sphere.Type: GrantFiled: December 12, 2012Date of Patent: February 16, 2016Assignee: Glaxo Group LimitedInventors: Ralf Marbach, Jussi Tenhunen
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Publication number: 20150377677Abstract: The invention concerns an optical remote sensing system, comprising a reaction chamber adapted to host a chemical reaction in the shape of a scattering turbid atmosphere inside the reaction chamber. An optical active sensor is used to detect the three dimensional structure of an accumulation, such as a heap, inside the reaction chamber, suggesting various measurement methods.Type: ApplicationFiled: February 20, 2014Publication date: December 31, 2015Applicant: ANDRITZ OYInventors: Jussi TENHUNEN, Oulu SIIKANEN, Juha KOSTAMOVAARA
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Publication number: 20150369666Abstract: An apparatus comprises a semiconductor single-photon avalanche detector, and a counter. The detector performs detections of photons of optical radiation caused by an optical excitation pulse to the object. The counter measures timing of each detection made in the detector with respect to the excitation pulse causing the detected photons, and performs at least one of the following: forming a number of Raman detections, forming a number of fluorescence detections. Forming the number of the Raman detections is performed by eliminating an estimate of a number of fluorescence photons in the measurement. Forming the number of the fluorescence detections is performed by eliminating an estimate of a number of Raman photons in the measurement. The estimates are formed in a predetermined manner from the number and timing of the detections.Type: ApplicationFiled: February 13, 2014Publication date: December 24, 2015Applicants: TEKNOLOGIAN TUTKIMUSKESKUS VTT, OULUN YLIOPISTOInventors: Juha KOSTAMOVAARA, Jussi TENHUNEN
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Patent number: 8917388Abstract: An apparatus comprises a plurality of detecting elements and a summer. Each detecting element receives and detects different bands of spectrum of Raman radiation formed in response to at least one optical excitation pulse directed to the object. The detecting elements and/or the summer receives a command to enable registration of detections in the detecting elements and a command to disable the registration during or after the Raman radiation. The summer registers separately the detections of the Raman radiation in at least two detecting elements for presenting data on the object on the basis of the detections.Type: GrantFiled: October 8, 2010Date of Patent: December 23, 2014Assignees: Teknologian Tutkimuskeskus Vtt, Oulun YliopistoInventors: Jussi Tenhunen, Juha Kostamovaara
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Publication number: 20140354989Abstract: An apparatus and method using the apparatus for measuring target samples, particularly pharmaceutical products using Raman radiation. The sample is located in an aperture in a wall structure with a reflective surface on one or both of the sides of the wall structure facing respectively the excitation radiation transmitter or the Raman radiation detector. Preferably two reflective surfaces each in hemispherical shape and facing each other in a spherical arrangement are provided, with the wall structure across the diameter of the sphere.Type: ApplicationFiled: December 12, 2012Publication date: December 4, 2014Inventors: Ralf Marbach, Jussi Tenhunen
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Publication number: 20120194815Abstract: An apparatus comprises a plurality of detecting elements and a summer. Each detecting element receives and detects different bands of spectrum of Raman radiation formed in response to at least one optical excitation pulse directed to the object. The detecting elements and/or the summer receives a command to enable registration of detections in the detecting elements and a command to disable the registration during or after the Raman radiation. The summer registers separately the detections of the Raman radiation in at least two detecting elements for presenting data on the object on the basis of the detections.Type: ApplicationFiled: October 8, 2010Publication date: August 2, 2012Inventors: Jussi Tenhunen, Juha Kostamovaara
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Patent number: 6870619Abstract: An entrance slit of the spectrometer is illuminated with optical radiation. An optical component images the entrance slit to an optical modulator by the optical radiation and disperses the optical radiation into a spectrum. The spectrum is modulated by the optical modulator The optical component composes spectral non-dispersive measurement radiation of the spectrum and images the entrance slit included in the measurement radiation to an exit slit which may be the same one as the exit slit or a different one. Measurement radiation is detected from the entrance slit with a detector, which converts the measurement radiation into an electrical measurement signal.Type: GrantFiled: September 27, 2000Date of Patent: March 22, 2005Assignee: Valtion Teknillinen TutkimuskeskusInventors: Jussi Tenhunen, Jouko Malinen, Markku Känsäkoski
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Patent number: 6717148Abstract: The invention relates to a method and an apparatus for measuring a coating from paper or board. The measurement is carried out by one detector at different times or by two detectors simultaneously. IR radiation directed at the coating and radiation emerging from the coating are chopped synchronously in blocks. A wavelength band sensitive and insensitive to the absorption are bandpass filtered and measured in both the MIR and NIR region. The absorption strength is measured in a digital signal processing block by comparing the radiation sensitive to absorption to the radiation insensitive to absorption, and the amount of each coating component is determined in the digital signal processing block on the basis of the absorption strength.Type: GrantFiled: August 9, 2002Date of Patent: April 6, 2004Assignee: Metso Automation OyInventors: Markku Känsäkoski, Markku Mäntylä, Jussi Tenhunen
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Publication number: 20030132387Abstract: The invention relates to a method and a device for measuring the amount of coating on a moving substrate. Reflection measurement is used in the invention for measuring the properties of a coating. The amount of calcium carbonate in the coating is measured by measuring an absorption peak of calcium carbonate at a wavelength of about 3.95 micrometers and/or the amount of kaolin is measured by measuring an absorption peak of kaolin at a wavelength of about 2.7 micrometers.Type: ApplicationFiled: October 29, 2002Publication date: July 17, 2003Applicant: Metso Paper Automation OYInventors: Jussi Tenhunen, Markku Kansakoski, Markku Mantyla
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Publication number: 20030047135Abstract: The invention relates to a method and an apparatus for measuring a coating from paper or board. The measurement is carried out by one detector at different times or by two detectors simultaneously. IR radiation directed at the coating and radiation emerging from the coating are chopped synchronously in blocks. A wavelength band sensitive and insensitive to the absorption are bandpass filtered and measured in both the MIR and NIR region. The absorption strength is measured in a digital signal processing block by comparing the radiation sensitive to absorption to the radiation insensitive to absorption, and the amount of each coating component is determined in the digital signal processing block on the basis of the absorption strength.Type: ApplicationFiled: August 9, 2002Publication date: March 13, 2003Inventors: Markku Kansakoski, Markku Mantyla, Jussi Tenhunen