Patents by Inventor Jonathan Gerlitz
Jonathan Gerlitz 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: 8401604Abstract: Embodiments of the present system and methods measure a concentration of a substance, such as glucose, in a body. The present embodiments measure a first amount of infrared (IR) radiation absorbed or emitted from the body in a first wavelength band, and a second amount of IR radiation absorbed or emitted from the body in a second wavelength band. The present embodiments also measure a temperature at a surface of the body and an ambient temperature. A normalized ratio parameter is calculated from the four measurements, and the concentration of the substance in the body is calculated by correlating the normalized ratio parameter with the body surface temperature and the ambient temperature using an empirically derived lookup table. Also disclosed are methods for creating the empirically derived lookup table.Type: GrantFiled: April 11, 2008Date of Patent: March 19, 2013Assignee: Glucovista, LLCInventor: Jonathan Gerlitz
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Patent number: 8364219Abstract: An apparatus and method for measuring a concentration of a substance in an eye using a retro-reflected measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient and a retro-reflected reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. The apparatus further includes a detector positionable to receive the retro-reflected measurement light beam and the retro-reflected reference light beam. The detector is responsive to light having the first wavelength by generating a measurement signal and responsive to light having the second wavelength by generating a reference signal. The apparatus further includes an electrical circuit coupled to the detector. The electrical circuit is responsive to the measurement signal and the reference signal to measure the concentration of the substance in the eye.Type: GrantFiled: December 2, 2009Date of Patent: January 29, 2013Assignee: Gluco Vista, Inc.Inventor: Jonathan Gerlitz
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Patent number: 8364218Abstract: A method determines the concentration of a substance in a subject's blood. The method includes measuring an interaction of at least one light beam with a portion of the subject's body. The method further includes calculating a value of an optically-measured parameter indicative of the interaction of the at least one light beam with the substance in the portion of the subject's body. The method further includes measuring values of one or more temperature-indicative parameters corresponding to a temperature of the portion of the subject's body. The method further includes accessing an empirical correlation of the optically-measured parameter and the one or more temperature-indicative parameters to concentrations of the substance in blood. The method further includes obtaining a concentration of the substance in the subject's blood using the empirical correlation. The concentration corresponds to the value of the optically-measured parameter and the values of the one or more temperature-indicative parameters.Type: GrantFiled: February 11, 2008Date of Patent: January 29, 2013Assignee: GlucoVista, Inc.Inventor: Jonathan Gerlitz
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Patent number: 8219169Abstract: A method determines the concentration of a substance in a subject's blood. The method includes noninvasively irradiating an eye with a measurement light beam having a first wavelength and a first power and with a reference light beam having a second wavelength and a second power. The second wavelength is different from the first wavelength. The method further includes measuring at least one of a body temperature of the subject and an ambient temperature of the subject. The method further includes detecting a power of the measurement retro-reflected light beam and detecting a power of the reference retro-reflected light beam. The method further includes calculating a measurement ratio of the detected power of the measurement retro-reflected light beam and the first power and calculating a reference ratio of the detected power of the reference retro-reflected light beam and the second power.Type: GrantFiled: February 11, 2008Date of Patent: July 10, 2012Assignee: GlucoVista Inc.Inventor: Jonathan Gerlitz
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Publication number: 20100152558Abstract: An apparatus and method for measuring a concentration of a substance in an eye using a retro-reflected measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient and a retro-reflected reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. The apparatus further includes a detector positionable to receive the retro-reflected measurement light beam and the retro-reflected reference light beam. The detector is responsive to light having the first wavelength by generating a measurement signal and responsive to light having the second wavelength by generating a reference signal. The apparatus further includes an electrical circuit coupled to the detector. The electrical circuit is responsive to the measurement signal and the reference signal to measure the concentration of the substance in the eye.Type: ApplicationFiled: December 2, 2009Publication date: June 17, 2010Applicant: GlucoVista, LLCInventor: Jonathan Gerlitz
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Patent number: 7643859Abstract: An apparatus and method for measuring a concentration of a substance in an eye using a retro-reflected measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient and a retro-reflected reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. The apparatus further includes a detector positionable to receive the retro-reflected measurement light beam and the retro-reflected reference light beam. The detector is responsive to light having the first wavelength by generating a measurement signal and responsive to light having the second wavelength by generating a reference signal. The apparatus further includes an electrical circuit coupled to the detector. The electrical circuit is responsive to the measurement signal and the reference signal to measure the concentration of the substance in the eye.Type: GrantFiled: October 11, 2007Date of Patent: January 5, 2010Assignee: GlucoVista, LLCInventor: Jonathan Gerlitz
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Publication number: 20090259407Abstract: Embodiments of the present system and methods measure a concentration of a substance, such as glucose, in a body. The present embodiments measure a first amount of infrared (IR) radiation absorbed or emitted from the body in a first wavelength band, and a second amount of IR radiation absorbed or emitted from the body in a second wavelength band. The present embodiments also measure a temperature at a surface of the body and an ambient temperature. A normalized ratio parameter is calculated from the four measurements, and the concentration of the substance in the body is calculated by correlating the normalized ratio parameter with the body surface temperature and the ambient temperature using an empirically derived lookup table. Also disclosed are methods for creating the empirically derived lookup table.Type: ApplicationFiled: April 11, 2008Publication date: October 15, 2009Inventor: Jonathan Gerlitz
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Publication number: 20090204366Abstract: A method determines the concentration of a substance in a subject's blood. The method includes measuring an interaction of at least one light beam with a portion of the subject's body. The method further includes calculating a value of an optically-measured parameter indicative of the interaction of the at least one light beam with the substance in the portion of the subject's body. The method further includes measuring values of one or more temperature-indicative parameters corresponding to a temperature of the portion of the subject's body. The method further includes accessing an empirical correlation of the optically-measured parameter and the one or more temperature-indicative parameters to concentrations of the substance in blood. The method further includes obtaining a concentration of the substance in the subject's blood using the empirical correlation. The concentration corresponds to the value of the optically-measured parameter and the values of the one or more temperature-indicative parameters.Type: ApplicationFiled: February 11, 2008Publication date: August 13, 2009Inventor: Jonathan Gerlitz
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Publication number: 20090201490Abstract: A method determines the concentration of a substance in a subject's blood. The method includes noninvasively irradiating an eye with a measurement light beam having a first wavelength and a first power and with a reference light beam having a second wavelength and a second power. The second wavelength is different from the first wavelength. The method further includes measuring at least one of a body temperature of the subject and an ambient temperature of the subject. The method further includes detecting a power of the measurement retro-reflected light beam and detecting a power of the reference retro-reflected light beam. The method further includes calculating a measurement ratio of the detected power of the measurement retro-reflected light beam and the first power and calculating a reference ratio of the detected power of the reference retro-reflected light beam and the second power.Type: ApplicationFiled: February 11, 2008Publication date: August 13, 2009Inventor: Jonathan Gerlitz
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Publication number: 20080111971Abstract: An apparatus and method for measuring a concentration of a substance in an eye using a retro-reflected measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient and a retro-reflected reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. The apparatus further includes a detector positionable to receive the retro-reflected measurement light beam and the retro-reflected reference light beam. The detector is responsive to light having the first wavelength by generating a measurement signal and responsive to light having the second wavelength by generating a reference signal. The apparatus further includes an electrical circuit coupled to the detector. The electrical circuit is responsive to the measurement signal and the reference signal to measure the concentration of the substance in the eye.Type: ApplicationFiled: October 11, 2007Publication date: May 15, 2008Inventor: Jonathan Gerlitz
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Patent number: 7308293Abstract: An apparatus for measuring a concentration of a substance in an eye (13) includes a measurement light source (4) producing a measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient. The apparatus further includes a reference light source (6) producing a reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. At least a portion of the measurement light beam retro-reflects from the retina (17) and at least a portion of the reference light beam retro-reflects from the retina (17). The apparatus further includes a detector (9) responsive to light having the first wavelength by generating a measurement signal and responsive to light having the second wavelength by generating a reference signal.Type: GrantFiled: August 1, 2002Date of Patent: December 11, 2007Assignee: GlucoVista, LLCInventor: Jonathan Gerlitz
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Patent number: 6991368Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.Type: GrantFiled: September 17, 2002Date of Patent: January 31, 2006Inventor: Jonathan Gerlitz
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Publication number: 20040260159Abstract: An apparatus for measuring a concentration of a substance in an eye (13) having a retina (17) includes a measurement light source (4) producing a measurement light beam having a first wavelength at which the substance has a non-zero first absorption coefficient. The apparatus further includes a reference light source (6) producing a reference light beam having a second wavelength at which the substance has a second absorption coefficient which is substantially equal to zero. The apparatus further includes an optical combiner (1) which is positionable so that at least a portion of the measurement light beam retro-reflects from the retina (17) and so that at least a portion of the reference light beam retro-reflects from the retina (17). The apparatus further includes a detector (9) positionable to receive the retro-reflected measurement light beam and the retro-reflected reference light beam.Type: ApplicationFiled: August 12, 2004Publication date: December 23, 2004Inventor: Jonathan Gerlitz
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Patent number: 6811306Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.Type: GrantFiled: July 18, 2002Date of Patent: November 2, 2004Inventor: Jonathan Gerlitz
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Publication number: 20030016728Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.Type: ApplicationFiled: September 17, 2002Publication date: January 23, 2003Inventor: Jonathan Gerlitz
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Publication number: 20020181540Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.Type: ApplicationFiled: July 18, 2002Publication date: December 5, 2002Inventor: Jonathan Gerlitz
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Patent number: 6435711Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.Type: GrantFiled: September 14, 1999Date of Patent: August 20, 2002Inventor: Jonathan Gerlitz
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Patent number: 4930868Abstract: A beam splitter combining the optical apertures of at least three optical (or electro-optical) devices to one optical aperture with respect to a beam of electromagnetic radiation passing therethrough, comprises a dichroic member effective to reflect part of the spectral range of the electromagnetic radiation and to transmit the remainder therethrough; and a grid effective to refract a narrow bandwidth of the electromagnetic radiation and to transmit the remaining electromagnetic radiation therethrough.Type: GrantFiled: October 11, 1988Date of Patent: June 5, 1990Assignee: Sofin Ltd.Inventor: Jonathan Gerlitz