Patents by Inventor Douglas S. Baer
Douglas S. Baer 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: 11962877Abstract: Some embodiments provide an apparatus for controlling the motion of a camera component. In some embodiments, the apparatus includes an actuator module. The actuator module includes a plurality of magnets. Each magnet of the plurality of magnets is poled with magnetic domains substantially aligned in the same direction throughout each magnet. The apparatus further includes a coil rigidly disposed around a lens. Each magnet of the plurality of magnets contributes to the forces to adjust focus of the lens based on Lorentz forces generated from the coil.Type: GrantFiled: July 29, 2022Date of Patent: April 16, 2024Assignee: Apple Inc.Inventors: Richard J. Topliss, Douglas S. Brodie, Anthony J. Rossetti, Richard H. Tsai, Richard L. Baer
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Patent number: 11867623Abstract: A cavity enhanced absorption spectroscopy (CEAS) system is provided that utilizes collimators the incorporate gradient index (GRIN) lenses in lieu of conventional spherical or aspheric refractive lenses. The use of smaller diameter GRIN lenses facilitates a reduced initial beam size entering the sample cavity, which reduces self-interference noise and increases a signal to noise ratio of the measurements. Further, a reduced size and mass of the GRIN lens can reduce a size of the mounting hardware utilized to mount the optical components, which enables more laser beams to be coupled to a single gas cell compared to a similar gas cell integrated with conventional refractive collimators. A larger number of lasers enables more gas peaks to be measured substantially simultaneously using the CEAS system.Type: GrantFiled: February 9, 2022Date of Patent: January 9, 2024Assignee: ABB Schweiz AGInventors: John B. Leen, Dylan R. Rittman, Kyle G Owen, Douglas S. Baer
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Patent number: 11761590Abstract: Technologies for producing efficient investigation routes for identifying gas leak locations include a mobile compute device. The mobile compute device includes circuitry configured to obtain route data indicative of a route to be traveled along to identify a location of a gas leak. The circuitry is also configured to present the route data to a user to guide the user along the route.Type: GrantFiled: October 6, 2020Date of Patent: September 19, 2023Assignee: ABB Schweiz AGInventors: J. Brian Leen, Douglas S. Baer, Jason Ghiraldini, Susan Kasper
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Publication number: 20230280230Abstract: A system, method, and apparatus are provided for estimating a flux of fugitive gas emissions. The method is performed using a gas analyzer coupled to a sampling wand, where gas enters the inlet tip of the sampling wand prior to being sampled by the gas analyzer. The sampling wand is fixed to a mobile device that includes an inertial measurement unit. Location information from the inertial measurement unit is used to compile a high resolution geo-spatial map of gas concentration levels across a cross-sectional area of a gas plume. A near-field Gaussian plume inversion calculation is then performed to estimate the flux based on the gas concentration data and the location information.Type: ApplicationFiled: March 3, 2022Publication date: September 7, 2023Applicant: ABB Schweiz AGInventors: John B. Leen, Joseph E. Thomaz, Douglas S. Baer
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Publication number: 20230251191Abstract: A cavity enhanced absorption spectroscopy (CEAS) system is provided that utilizes collimators the incorporate gradient index (GRIN) lenses in lieu of conventional spherical or aspheric refractive lenses. The use of smaller diameter GRIN lenses facilitates a reduced initial beam size entering the sample cavity, which reduces self-interference noise and increases a signal to noise ratio of the measurements. Further, a reduced size and mass of the GRIN lens can reduce a size of the mounting hardware utilized to mount the optical components, which enables more laser beams to be coupled to a single gas cell compared to a similar gas cell integrated with conventional refractive collimators. A larger number of lasers enables more gas peaks to be measured substantially simultaneously using the CEAS system.Type: ApplicationFiled: February 9, 2022Publication date: August 10, 2023Applicant: ABB Schweiz AGInventors: John B. Leen, Dylan R. Rittman, Kyle G. Owen, Douglas S. Baer
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Patent number: 11619562Abstract: Systems and methods for efficiently identifying gas leak locations may include traversing, by an investigator and within a search area in which a gas leak has been indicated, a route defined according to at least one of a surge-cast algorithm or a surge-spiral algorithm. The systems and methods may also include sampling, with a gas detection device carried by the investigator, an environment along the route to identify a location of the gas leak.Type: GrantFiled: October 6, 2020Date of Patent: April 4, 2023Assignee: ABB Schweiz AGInventors: J. Brian Leen, Douglas S. Baer, Susan Kasper, Zachary Plante
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Publication number: 20220107239Abstract: Systems and methods for efficiently identifying gas leak locations may include traversing, by an investigator and within a search area in which a gas leak has been indicated, a route defined according to at least one of a surge-cast algorithm or a surge-spiral algorithm. The systems and methods may also include sampling, with a gas detection device carried by the investigator, an environment along the route to identify a location of the gas leak.Type: ApplicationFiled: October 6, 2020Publication date: April 7, 2022Inventors: J. Brian Leen, Douglas S. Baer, Susan Kasper, Zachary Plante
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Publication number: 20220107189Abstract: Technologies for producing efficient investigation routes for identifying gas leak locations include a mobile compute device. The mobile compute device includes circuitry configured to obtain route data indicative of a route to be traveled along to identify a location of a gas leak. The circuitry is also configured to present the route data to a user to guide the user along the route.Type: ApplicationFiled: October 6, 2020Publication date: April 7, 2022Inventors: J. Brian Leen, Douglas S. Baer, Jason Ghiraldini, Susan Kasper
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Patent number: 10557792Abstract: A method for spectral interpretation in absorption spectroscopy uses a nonlinear spectral fitting algorithm for interpretation of spectral features in complex absorption spectra. The algorithm combines two spectral modeling techniques for generating spectral models to be used in the curve fitting process: a line-shape model and a basis-set model. The selected models for all gas components are additively combined using a least squares minimization, allowing for quantification of multiple species simultaneously.Type: GrantFiled: December 31, 2015Date of Patent: February 11, 2020Inventors: Elena S. F. Berman, Andrew Fahrland, Manish Gupta, Douglas S. Baer, John Brian Leen
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Publication number: 20170191929Abstract: A method for spectral interpretation in absorption spectroscopy uses a nonlinear spectral fitting algorithm for interpretation of spectral features in complex absorption spectra. The algorithm combines two spectral modeling techniques for generating spectral models to be used in the curve fitting process: a line-shape model and a basis-set model. The selected models for all gas components are additively combined using a least squares minimization, allowing for quantification of multiple species simultaneously.Type: ApplicationFiled: December 31, 2015Publication date: July 6, 2017Applicant: ABB, Inc.Inventors: Elena S.F. Berman, Andrew Fahrland, Manish Gupta, Douglas S. Baer, John Brian Leen
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Patent number: 9097583Abstract: A tunable mid-infrared laser operated in a pulsed mode is coupled off-axis into a high-finesse optical cavity to produce a long-path spectrometer. The cavity receives a gas sample. Laser pulses may be wavelength-scanned by stepping an external grating, allowing the grating to mechanically settle, then measuring the ring-down with a set of laser pulses, before moving on the next wavelength. A detector receiving infrared light exiting the cavity supplies a cavity ring-down trace representative of sample absorption of the infrared pulses. A processor determines an absolute absorption spectrum of the gas sample from the ring-down trace and analyzes sample gas composition and trace concentration from that spectrum. The absorption baseline is highly reproducible and stable, improving the accuracy of multivariate fits, and the spectral resolution can be better than 0.001 cm?1 (contingent upon the laser source), allowing for high-resolution measurements of sharp absorption features.Type: GrantFiled: May 21, 2013Date of Patent: August 4, 2015Assignee: Los Gatos ResearchInventors: Manish Gupta, J. Brian Leen, Douglas S. Baer
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Publication number: 20140319352Abstract: A tunable mid-infrared laser operated in a pulsed mode is coupled off-axis into a high-finesse optical cavity to produce a long-path spectrometer. The cavity receives a gas sample. Laser pulses may be wavelength-scanned by stepping an external grating, allowing the grating to mechanically settle, then measuring the ring-down with a set of laser pulses, before moving on the next wavelength. A detector receiving infrared light exiting the cavity supplies a cavity ring-down trace representative of sample absorption of the infrared pulses. A processor determines an absolute absorption spectrum of the gas sample from the ring-down trace and analyzes sample gas composition and trace concentration from that spectrum. The absorption baseline is highly reproducible and stable, improving the accuracy of multivariate fits, and the spectral resolution can be better than 0.001 cm?1 (contingent upon the laser source), allowing for high-resolution measurements of sharp absorption features.Type: ApplicationFiled: May 21, 2013Publication date: October 30, 2014Applicant: Los Gatos ResearchInventors: Manish Gupta, J. Brian Leen, Douglas S. Baer
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Patent number: 8823923Abstract: A method of measuring energy expenditure in a living subject comprises: (a) administering a specified dose of doubly-labeled water (2H218O) to a living subject; (b) obtaining samples at three or more times of body water from the living subject; (c) measuring 2H/1H, 17O/16O and 18O/16O ratios in each of the obtained samples using optical spectroscopy; and (d) determining (1) a combined value of flux of body water and exhaled carbon dioxide from a change in measured 18O/16O over time, (2) a value of flux of body water alone from a change in measured 2H/1H over time, and (3) a reference value of isotopic background fluctuation from a change in measured 17O/16O over time. Using 17O measurements to estimate background fluctuations of the 2H and 18O decreases the required isotope dosing of subjects or decreases uncertainty at current dosing levels.Type: GrantFiled: March 21, 2012Date of Patent: September 2, 2014Assignee: ABB Research Ltd.Inventors: Elena S. F. Berman, John R. Speakman, Manish Gupta, Edward L. Melanson, Jr., Susan L. Fortson, Douglas S. Baer
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Publication number: 20130027705Abstract: A method of measuring energy expenditure in a living subject comprises: (a) administering a specified dose of doubly-labeled water (2H218O) to a living subject; (b) obtaining samples at three or more times of body water from the living subject; (c) measuring 2H/1H, 17O/16O and 18O/16O ratios in each of the obtained samples using optical spectroscopy; and (d) determining (1) a combined value of flux of body water and exhaled carbon dioxide from a change in measured 18O/16O over time, (2) a value of flux of body water alone from a change in measured 2H/1H over time, and (3) a reference value of isotopic background fluctuation from a change in measured 17O/16O over time. Using 17O measurements to estimate background fluctuations of the 2H and 18O decreases the required isotope dosing of subjects or decreases uncertainty at current dosing levels.Type: ApplicationFiled: March 21, 2012Publication date: January 31, 2013Applicant: LOS GATOS RESEARCHInventors: Elena S.F. Berman, John R. Speakman, Manish Gupta, Edward L. Melanson, JR., Susan L. Fortson, Douglas S. Baer
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Patent number: 7468797Abstract: An absorption spectroscopy instrument is provided with a re-injection mirror to greatly increase the optical power coupled into an optical cavity, comprised of two or more mirrors, for the purpose of increasing the quality of absorption and extinction measurements made in the cavity. Light reflected from the first cavity mirror upon which a light beam is incident, can be efficiently collected and back reflected onto the same mirror, effectively producing a plurality of optical injections into the cavity. The instrument can be used for off-axis cavity ringdown spectroscopy, off-axis integrated cavity output spectroscopy, or other cavity-based spectroscopy applications.Type: GrantFiled: August 22, 2006Date of Patent: December 23, 2008Assignee: Los Gatos ResearchInventors: Anthony O'Keefe, Manish Gupta, Thomas G. Owano, Douglas S. Baer
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Patent number: 7298490Abstract: The disclosure describes an absorption spectroscopy method for sensing hydrogen gas in a sample atmosphere and an associated hydrogen sensor. A light beam, having a wavelength corresponding to a vibrational transition of hydrogen molecules from a ground vibration state to any excited rotational vibration state via a quadrupole interaction, is introduced into an optical cavity adapted to receive a sample atmosphere to be tested for the presence of hydrogen gas. The light is introduced into the cavity in an off-axis alignment to systematically eliminate cavity resonances, while preserving the absorption signal amplifying properties of such cavities. Hydrogen absorption is measured is terms of cavity output, as in the ICOS technique.Type: GrantFiled: September 30, 2005Date of Patent: November 20, 2007Assignee: Los Gatos ResearchInventors: Douglas S. Baer, Manish Gupta, Thomas Owano, Anthony O'Keefe