Patents by Inventor Paul Michael Petersen
Paul Michael Petersen 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: 20230402973Abstract: The present disclosure relates to an inspection system, in particular a mobile inspection system, for outdoor inspection of photovoltaic modules in situ, the inspection system comprising a movable detector unit and a processing unit. The detector unit is configured to obtain, when positioned at a user-controllable position spaced apart from a photovoltaic module of a photovoltaic power system, luminescence data from a light-receiving surface of said photovoltaic module. The detector unit may include a light source, in particular a laser source, configured to emit an illumination beam, means for selectively directing the illumination beam onto respective portions of the light-receiving surface so as, when the illumination beam is directed onto a first portion of the light-receiving surface, to only illuminate the first portion while leaving a corresponding first remaining portion of the light-receiving surface unilluminated by the illumination beam.Type: ApplicationFiled: October 15, 2021Publication date: December 14, 2023Inventors: Gisele Alves Dos Reis Benatto, Mingjun Chi, Peter Behrensdorff Poulsen, Paul Michael Petersen, Anders Kragh Hansen, Sergiu Spataru
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Patent number: 11813475Abstract: In certain embodiments a light therapy system (e.g., phototherapy device), such as for treatment of Alzheimer's disease, depression, dementia, short-term memory, or for improved learning, improved athletic performance or improved cognitive performance, is provided where the light system comprises a blue light source that operates at a frequency in the range from 20 to 50 Hz (preferably around 40 Hz), whereby the system enables retinal ganglion cells of a human to be exposed in order to stimulate brain waves (gamma oscillations in the human's brain).Type: GrantFiled: February 14, 2018Date of Patent: November 14, 2023Assignees: The Regents of the University of California, Danmarks Tekniske UniversitetInventors: Jes Broeng, Paul Michael Petersen, Ngoc Mai Thi Nguyen, Lance Kriegsfeld
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Patent number: 11730917Abstract: Gamma brain stimulation for preventing or treating Alzheimer's disease or sleeping disorders using light or sound is known. A strobing 40 Hz light source has been shown to cause positive effects due to the stimulation. It is an advantage to know the actual dosage of light that enters the person's eyes in order to understand the relationship between dosage and effectiveness. A camera is used to detect the subject's gaze angle, distance, pupil diameter and any other factors that affect the light power that enters the eye. A target dosage is first determined by a medical worker, such as to determine the effects of the exact same dosage on a group of similar persons, such as Alzheimer's patients. With deviations of gaze angle, distance, and pupil size from the ideal, the effective dosage is decreased. The disclosed system adjusts the actual dosage, such as session duration, based on such factors so that the final dosage received by the person is consistent and meets the target dosage.Type: GrantFiled: October 29, 2020Date of Patent: August 22, 2023Assignee: Optoceutics ApSInventors: Marcus Carstensen, Paul Michael Petersen, Jes Broeng, Mark Henney, Ngoc Mai Nguyen, Robert Dobkin
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Publication number: 20230200952Abstract: A method for formation of monolithic nanostructures on an implantable device includes: a. depositing a metal film to a surface of the implantable device; b. heating the metal film for a period of time, such that the metal film transforms into multiple discrete nanoparticles, the multiple nanoparticles thereby forming an etch mask on the surface of the implantable device; c. etching the implantable device such that the surface of the implantable device is etched through the etch mask, thereby forming monolithic nanostructures in the surface of the implantable device; and d. (optionally) removing the etch mask, such as by immersion in an aqua regia solution.Type: ApplicationFiled: May 27, 2021Publication date: June 29, 2023Inventors: Yiyu Ou, Paul Michael Petersen
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Publication number: 20230084974Abstract: In certain embodiments a light therapy system (e.g., phototherapy device), such as for treatment of Alzheimer's disease, depression, dementia, short-term memory, or for improved learning, improved athletic performance or improved cognitive performance, is provided where the light system comprises a blue light source that operates at a frequency in the range from 20 to 50 Hz (preferably around 40 Hz), whereby the system enables retinal ganglion cells of a human to be exposed in order to stimulate brain waves (gamma oscillations in the human's brain).Type: ApplicationFiled: July 13, 2022Publication date: March 16, 2023Applicants: The Regents of the University of California, Danmarks Tekniske UniversitetInventors: Jes Broeng, Paul Michael Petersen, Ngoc Mai Thi Nguyen, Lance Kriegsfeld
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Patent number: 11433253Abstract: In certain embodiments a light therapy system (e.g., phototherapy device), such as for treatment of Alzheimer's disease, depression, dementia, short-term memory, or for improved learning, improved athletic performance or improved cognitive performance, is provided where the light system comprises a blue light source that operates at a frequency in the range from 20 to 50 Hz (preferably around 40 Hz), whereby the system enables retinal ganglion cells of a human to be exposed in order to stimulate brain waves (gamma oscillations in the human's brain).Type: GrantFiled: January 28, 2020Date of Patent: September 6, 2022Assignees: The Regents of the University of California, Danmarks Tekniske UniversitetInventors: Jes Broeng, Paul Michael Petersen, Ngoc Mai Thi Nguyen, Lance Kriegsfeld
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Publication number: 20220134047Abstract: Gamma brain stimulation for preventing or treating Alzheimer's disease or sleeping disorders using light or sound is known. A strobing 40 Hz light source has been shown to cause positive effects due to the stimulation. It is an advantage to know the actual dosage of light that enters the person's eyes in order to understand the relationship between dosage and effectiveness. A camera is used to detect the subject's gaze angle, distance, pupil diameter and any other factors that affect the light power that enters the eye. A target dosage is first determined by a medical worker, such as to determine the effects of the exact same dosage on a group persons, such as Alzheimer's patients. With deviations of gaze angle, distance, and pupil size from the ideal, the effective dosage is decreased. The disclosed system adjusts the actual dosage, such as session duration, based on such factors so that the final dosage received by the person is consistent and meets the target dosage.Type: ApplicationFiled: October 29, 2020Publication date: May 5, 2022Inventors: Marcus Carstensen, Paul Michael Petersen, Jes Broeng, Mark Henney, Ngoc Mai Nguyen, Robert Dobkin
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Publication number: 20200269065Abstract: In certain embodiments a light therapy system (e.g., phototherapy device), such as for treatment of Alzheimer's disease, depression, dementia, short-term memory, or for improved learning, improved athletic performance or improved cognitive performance, is provided where the light system comprises a blue light source that operates at a frequency in the range from 20 to 50 Hz (preferably around 40 Hz), whereby the system enables retinal ganglion cells of a human to be exposed in order to stimulate brain waves (gamma oscillations in the human's brain).Type: ApplicationFiled: February 14, 2018Publication date: August 27, 2020Inventors: Jes Broeng, Paul Michael Petersen, Ngoc Mai Thi Nguyen, Lance Kriegsfeld
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Publication number: 20200164220Abstract: In certain embodiments a light therapy system (e.g., phototherapy device), such as for treatment of Alzheimer's disease, depression, dementia, short-term memory, or for improved learning, improved athletic performance or improved cognitive performance, is provided where the light system comprises a blue light source that operates at a frequency in the range from 20 to 50 Hz (preferably around 40 Hz), whereby the system enables retinal ganglion cells of a human to be exposed in order to stimulate brain waves (gamma oscillations in the human's brain).Type: ApplicationFiled: January 28, 2020Publication date: May 28, 2020Inventors: Jes Broeng, Paul Michael Petersen, Ngoc Mai Thi Nguyen, Lance Kriegsfeld
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Patent number: 9709873Abstract: A laser apparatus generating frequency converted light. Embodiments of the laser apparatus described herein apply a cascade of nonlinear frequency mixer for sum frequency generation (SFG) or difference frequency generation (DFG) between two frequency components of a spectrally combined laser beam with at least two spectral components originating from two respective laser sources, SFG of two frequency components beams offers up to a factor of four amplification of output power over SHG of a single laser beam.Type: GrantFiled: December 15, 2014Date of Patent: July 18, 2017Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Anders Kragh Hansen, Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Patent number: 9685755Abstract: A method of controlling beam quality and stability of a laser apparatus, the laser apparatus comprising, a diode laser (10) providing first radiation of at least a first wavelength, and a frequency conversion unit (12) configured to frequency-convert the first radiation from the diode laser and to output the frequency-converted radiation (213), the frequency-converted radiation having at least a second wavelength different from the first wavelength, the diode laser (10) comprising at least a first and a second section (222,223), a first contact (220) for injecting a first current (I1) into the first section (222), a second contact (221) for injecting a second current (I2) into the second section (223), and means for controlling a temperature of the diode laser; wherein the method comprises monitoring a first parameter indicative of the power content of a dominant lobe of the first radiation; iteratively determining a combination of respective values of the first current, the second current and the temperatureType: GrantFiled: March 13, 2012Date of Patent: June 20, 2017Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Jensen Bjarlin, Peter Eskil Andersen, Paul Michael Petersen, André Müller
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Publication number: 20160320686Abstract: A laser apparatus generating frequency converted light. Embodiments of the laser apparatus described herein apply a cascade of nonlinear frequency mixers for sum frequency generation (SFG) or difference frequency generation (DFG) between two frequency components of a spectrally combined laser beam with at least two spectral components originating from two respective laser sources, SFG of two frequency components beams offers up to a factor of four amplification of output power over SHG of a single laser beam.Type: ApplicationFiled: December 15, 2014Publication date: November 3, 2016Applicant: Danmarks Tekniske UniversitetInventors: Anders Kragh Hansen, Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Publication number: 20150092801Abstract: A method of controlling beam quality and stability of a laser apparatus, the laser apparatus comprising, a diode laser (10) providing first radiation of at least a first wavelength, and a frequency conversion unit (12) configured to frequency-convert the first radiation from the diode laser and to output the frequency-converted radiation (213), the frequency-converted radiation having at least a second wavelength different from the first wavelength, the diode laser (10) comprising at least a first and a second section (222,223), a first contact (220) for injecting a first current (I1) into the first section (222), a second contact (221) for injecting a second current (I2) into the second section (223), and means for controlling a temperature of the diode laser; wherein the method comprises monitoring a first parameter indicative of the power content of a dominant lobe of the first radiation; iteratively determining a combination of respective values of the first current, the second current and the temperatureType: ApplicationFiled: March 13, 2012Publication date: April 2, 2015Inventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen, André Müller
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Patent number: 8670474Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one end point outside the first wavelength interval.Type: GrantFiled: September 14, 2011Date of Patent: March 11, 2014Assignee: Danmarks Tekniske UniversitetInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Publication number: 20140036527Abstract: A system for the distribution of white light is configured for guiding light with a multitude of visible wavelengths in a propagation direction from the supply side to the distribution side. The system includes a transport fibre and a spectral conversion fibre. The transport fibre has a length extending from a first end to a second end, and a spectral transmission characteristics. The transport fibre is operationally connected to the spectral conversion fibre having a length extending from an input end to an output end. The spectral conversion fibre includes a photoluminescent agent for converting light of a first wavelength to light of a second, longer wavelength. A spectral conversion characteristics of the spectral conversion fibre is essentially determined by the spectral absorption and emission properties of the photoluminescent agent, the amount of photoluminescent agent, and the distribution of the photoluminescent agent in the spectral conversion fibre.Type: ApplicationFiled: April 3, 2012Publication date: February 6, 2014Applicant: DANMARKS TEKNISKE UNIVERSITET-DTUInventors: Paul Michael Petersen, Anders Bjarklev
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Publication number: 20130208746Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one end point outside the first wavelength interval.Type: ApplicationFiled: September 14, 2011Publication date: August 15, 2013Applicant: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Publication number: 20120286306Abstract: A lighting device (7) for illuminating objects, the lighting device comprising: a plurality of light emitting diodes (1) wherein at least one of the plurality of light emitting diodes is adapted to generate light having a spectrum different from a spectrum of light generated by another light emitting diode of said plurality of light emitting diodes; and a chamber (8) comprising a first reflective surface (3a) and an opening (5) for allowing light to exit said chamber, said opening having a periphery, wherein the plurality of light emitting diodes (1) are positioned along the periphery of said opening.Type: ApplicationFiled: November 11, 2010Publication date: November 15, 2012Applicant: DANMARKS TEKNISKE UNIVERSITETInventors: Carsten Dam-Hansen, Paul Michael Petersen, Peter Behrensdorff Poulsen
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Patent number: 7813407Abstract: Disclosed is a laser system that comprises a laser source adapted to emit a laser beam, wherein the laser source comprises a plurality of emitters for emitting respective beam contributions to the emitted laser beam; and first and second feedback means adapted to provide optical feedback to respective first and second parts of the emitted laser beam. The first feedback means is adapted to predominantly feed back a respective angular/directional contribution of each of said beam contributions into a corresponding one of the plurality of emitters from which said angular/directional contribution was emitted at a predetermined output angle, to cause each of the plurality of emitters to predominantly emit a beam contribution towards the second feedback means at an angle corresponding to the predetermined output angle.Type: GrantFiled: June 16, 2005Date of Patent: October 12, 2010Assignee: Danmarks Tekniske UniversitetInventors: Paul Michael Petersen, Birgitte Thestrup Nielsen
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Patent number: 7804881Abstract: Disclosed is a laser system comprising: A laser assembly (101) comprising a plurality of emitters; first and second light feedback devices (208, 232) forming respective external cavities with the laser assembly; a dispersive device (205) for redirecting respective portions of the light from the laser assembly to the first and second feedback devices (208, 232), wherein the first feedback device (232) is adapted to reflect a feedback portion of the redirected beam back onto the dispersive device (205) and to generate the output beam (233) from an output part of the first redirected beam, —an imaging device (213) for generating an optical Fourier transform of the plurality of emitters at a Fourier plane (235). The dispersive device (205) is positioned displaced from said Fourier plane (235) by a predetermined displacement (d) in a direction along said principle axis (230).Type: GrantFiled: December 5, 2006Date of Patent: September 28, 2010Assignee: Danmarks Tekniske UniversitetInventors: Ole Bjarlin Jensen, Birgitte Thestrup Nielsen, Paul Michael Petersen
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Patent number: RE46937Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one endpoint outside the first wavelength interval.Type: GrantFiled: March 8, 2016Date of Patent: July 3, 2018Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen