Patents by Inventor Lauri Kurki
Lauri Kurki 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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Publication number: 20240100357Abstract: A control circuit configured as a multi-criteria optimizer generates a radiation therapy treatment plan. The circuit then determines a resultant dose distribution as a function of the radiation therapy treatment plan and presents, on a display, at least a part of that resultant dose distribution. The latter may comprise, for example, presenting at least one isodose line on the display. The control circuit then detects user manipulation of a user interface. By one approach, this manipulation does not include corresponding immediate movement of any part of the presented resultant dose distribution itself. In particular, the detected user manipulation does not result in dragged movement of an isodose line on the display.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Inventors: Jani Kurki, Matti Kemppainen, Laura Korhonen, Veli-Pekka Kihniä, Lauri Halko, Jarmo Makkonen, Pekka Sorvari
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Patent number: 11592680Abstract: An apparatus for measuring spectral components of Raman-scattered light emitted by target. The apparatus includes: pulsed laser light source to emit light; probe optics to direct light towards target and to collect light scattered by target; optical spectrometer including: input divider to divide collected light into first and second light beams; first spectrograph including input apertures for receiving said light beams and optical disperser to disperse said light beams; second spectrograph comprising input apertures and output apertures; and spatial light modulator to receive dispersed first and second light beams and to selectively provide at least part of at least one of dispersed first and second light beams to input aperture of second spectrograph which reverses dispersion of light beam and focuses light beam to output aperture; detector element to measure spectral components of light beam exiting output aperture. Optical spectrometer further includes delay line(s) line for delaying light beam(s).Type: GrantFiled: December 28, 2021Date of Patent: February 28, 2023Assignee: TimeGate Instruments OyInventors: Lauri Kurki, Ilkka Alasaarela
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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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Publication number: 20220221730Abstract: An apparatus for measuring spectral components of Raman-scattered light emitted by target. The apparatus includes: pulsed laser light source to emit light; probe optics to direct light towards target and to collect light scattered by target; optical spectrometer including: input divider to divide collected light into first and second light beams; first spectrograph including input apertures for receiving said light beams and optical disperser to disperse said light beams; second spectrograph comprising input apertures and output apertures; and spatial light modulator to receive dispersed first and second light beams and to selectively provide at least part of at least one of dispersed first and second light beams to input aperture of second spectrograph which reverses dispersion of light beam and focuses light beam to output aperture; detector element to measure spectral components of light beam exiting output aperture. Optical spectrometer further includes delay line(s) line for delaying light beam(s).Type: ApplicationFiled: December 28, 2021Publication date: July 14, 2022Applicant: TimeGate Instruments OyInventors: Lauri Kurki, Ilkka Alasaarela
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Publication number: 20210298604Abstract: An apparatus for measuring a spectrum (RM(?)) of Raman-scattered light (LB2). The apparatus includes a light source (LS1) configured to provide illuminating light pulses (LB1), and an optical probe to guide the illuminating light pulses to a sample region (REG1) and cause excitation of Raman-scattered light in the sample region. The optical probe includes a waveguiding core surrounded by a cladding. The waveguiding core has a first facet (SRF1) and a second facet (SRF2) such that the first facet is arranged to gather the Raman-scattered light from the sample region. The apparatus further includes a spectrometer, and a focusing unit (SF2) that is configured to guide the gathered Raman-scattered light from the second facet to the spectrometer. The spectrometer includes a detector array (ARR1) that is arranged to measure a spectrum (RM(?)) of the Raman-scattered light by using time gated detection.Type: ApplicationFiled: March 12, 2021Publication date: September 30, 2021Applicant: TimeGate Instruments OyInventors: Lauri Kurki, Mari Tenhunen
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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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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: 20150008346Abstract: A measuring device includes a first optical sensor row and a second optical sensor row between which a planar object to be measured is placed. The direction of the first sensor row and the direction of the second sensor row differ from one another. Each sensor of the first sensor row forms data representing a distance between the object to be measured and the sensor. Each sensor of the second sensor row forms data representing a distance between the object to be measured and the sensor in order to determine at least one property of the object to be measured on the basis of the data.Type: ApplicationFiled: December 21, 2012Publication date: January 8, 2015Inventors: Markku Mäntylä, Jussi Graeffe, Karri Niemelä, Heimo Keränen, Pekka Suopajärvi, Lauri Kurki