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公开(公告)号：US20200232782A1
公开(公告)日：2020-07-23
申请号：US16839488
申请日：2020-04-03
Applicant: Lumentum Technology UK Limited
Inventor： Adrian Perrin JANSSEN
IPC: G01B9/02 , G01J3/453 , H04B10/572
Abstract: There is described an interferometer for use in an optical locker. The interferometer comprises at least two transparent materials having different thermal path length sensitivities. The interferometer is configured such that an input beam is split by the interferometer into first and second intermediate beams, which recombine to form an output beam, the first and second intermediate beams travelling along respective first and second intermediate beam paths which do not overlap. At least one of the intermediate beam paths passes through at least two of the transparent materials. A length of each intermediate beam path which passes through each transparent material is selected such that an optical path difference between the first and second intermediate beam path is substantially independent of temperature.
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42.发明申请公开(公告)号：US20200217645A1
公开(公告)日：2020-07-09
申请号：US16818156
申请日：2020-03-13
Applicant: 15 Seconds of Fame, Inc.
Inventor： Ruslan SABITOV , Alexander BETSER , Adam RESNICK , E. Michael HUESTIS , Brett Terry JOSHPE
Abstract: An apparatus includes a memory, a communication interface in communication with the memory and configured to communicate via a network, and a processor in communication with the memory and the communication interface. The processor receives facial image data associated with a user of a client device, registers the facial image data, and stores the facial image data and contextual data associated with the user in a database. The processor also receives video stream data from at least one image capture device in communication with the network, analyzes the video stream data and contextual data associated with the video stream data to define analyzed video data and analyzed contextual data, respectively, and defines a confidence level based on comparing the data associated with the video stream data to the data stored in the database. The processor defines a user-specific contextual video stream when the confidence level satisfies a criterion.
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公开(公告)号：US10670518B2
公开(公告)日：2020-06-02
申请号：US16028531
申请日：2018-07-06
Applicant: SHIMADZU CORPORATION
Inventor： Daijiro Kato , Shinya Wakuda
Abstract: The Fourier transform infrared spectrophotometer includes: a light source 11 for generating infrared light having a wavelength width including an absorption wavelength of a compound to be analyzed; an interferometer including a fixed mirror 15 and a movable mirror 16, for generating interfering light from the infrared light; a detector 25 for generating a voltage with a magnitude corresponding to the intensity of the interfering light, and for outputting a voltage obtained by subtracting, from the aforementioned voltage, a voltage with a predetermined magnitude; a high-pass filter 464 for allowing the passage of frequency components equal to or higher than a predetermined frequency in an output voltage from the detector 25; an amplifier 463 for amplifying an output voltage from the high-pass filter 464 by a predetermined multiplying factor; and an analogue-to-digital converter 27 for converting an output voltage from the amplifier 463 into a digital signal.
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公开(公告)号：US10670462B2
公开(公告)日：2020-06-02
申请号：US15920999
申请日：2018-03-14
Applicant: THERMO ELECTRON SCIENTIFIC INSTRUMENTS LLC
Inventor： John Magie Coffin , Michael S. Georgiadis , Jei Y. Chou
IPC: G01J3/453 , G01J3/02 , G01J3/06 , H02P25/034 , H02P8/00
Abstract: An embodiment of a ruggedized interferometer is described that comprises a light source that generates a beam of light; a fixed mirror; a moving mirror that travels along a linear path; a beam splitter that directs a first portion of the beam of light to the fixed mirror and a second portion of the beam of light to the moving mirror, wherein the beam splitter recombines the first portion reflected from the fixed mirror and the second portion reflected from the moving mirror; and a servo control that applies a substantial degree of force to the moving mirror at initiation of a turnaround period, wherein the substantial degree of force is sufficient to redirect the moving mirror traveling at a high velocity to an opposite direction of travel on the linear path.
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公开(公告)号：US20200103281A1
公开(公告)日：2020-04-02
申请号：US16704444
申请日：2019-12-05
Applicant: Massachusetts Institute of Technology
Inventor： Erika Ye , Amir H. Atabaki , Ningren Han , Rajeev J. RAM , William F. Herrington
Abstract: A non-paraxial Talbot spectrometer includes a transmission grating to receive incident light. The grating period of the transmission grating is comparable to the wavelength of interest so as to allow the Talbot spectrometer to operate outside the paraxial limit. Light transmitted through the transmission grating forms periodic Talbot images. A tilted detector is employed to simultaneously sample the Talbot images at various distances along a direction perpendicular to the grating. Spectral information of the incident light can be calculated by taking Fourier transform of the measured Talbot images or by comparing the measured Talbot images with a library of intensity patterns acquired with light sources having known wavelengths.
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Patent Agency Ranking
公开(公告)号：US10591281B2
公开(公告)日：2020-03-17
申请号：US16150717
申请日：2018-10-03
Applicant: 15 Seconds of Fame, Inc.
Inventor： Ruslan Sabitov , Alexander Betser , Adam Resnick , E. Michael Huestis , Brett Terry Joshpe
Abstract: An apparatus includes a memory, a communication interface in communication with the memory and configured to communicate via a network, and a processor in communication with the memory and the communication interface. The processor receives facial image data associated with a user of a client device, registers the facial image data, and stores the facial image data and contextual data associated with the user in a database. The processor also receives video stream data from at least one image capture device in communication with the network, analyzes the video stream data and contextual data associated with the video stream data to define analyzed video data and analyzed contextual data, respectively, and defines a confidence level based on comparing the data associated with the video stream data to the data stored in the database. The processor defines a user-specific contextual video stream when the confidence level satisfies a criterion.
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47.发明申请公开(公告)号：US20200064192A9
公开(公告)日：2020-02-27
申请号：US15981467
申请日：2018-05-16
Inventor： Cheyenne Teng , Gerard Wysocki , Eric J. Zhang , William M. Green
IPC: G01J3/453 , G01J3/433 , G01N21/3504
Abstract: A method is provided for Fourier domain dynamic correction of optical fringes in a laser spectrometer. The method includes Fourier transforming a background spectrum contaminated with the optical fringes to obtain baseline fringes in a frequency domain. The method includes partitioning the baseline fringes in the frequency domain using bandpass filtering to obtain partitioned baseline fringes. The method includes reconstructing the partitioned baseline fringes as separate spectra using an inverse Fourier transform. The method includes constructing a fitting model to approximate the background spectrum by assigning a first and a second free parameter to each of partitioned baseline fringe components to respectively allow for drift and amplitude adjustments during a fitting of the fitting model. The method includes applying the fitting model to a newly acquired spectrum to provide an interpretation of the newly acquired spectrum having a reduced influence of spectral contamination on concentration retrieval.
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公开(公告)号：US20200049557A1
公开(公告)日：2020-02-13
申请号：US16536709
申请日：2019-08-09
Inventor： Daesuk KIM
Abstract: The present inventive concepts relate to an inspection apparatus that snapshots an interference image pattern having a high spatial carrier frequency produced from a one-piece off-axis polarimetric interferometer and that precisely and promptly measures a Stokes vector including spatial polarimetric information. The inspection apparatus dynamically measure in real-time a two-dimensional polarization information without employing a two-dimensional scanner.
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公开(公告)号：US20200025616A1
公开(公告)日：2020-01-23
申请号：US16335587
申请日：2017-09-26
Applicant: IXA AMC Office / Academic Medical Center
Inventor： Bakiye Imran AVCI
Abstract: A high-resolution single-chip spectrometer is disclosed. Embodiments of the present invention are analogous to Fourier-transform spectrometers; however, embodiments of the present invention have no moving parts. An illustrative embodiment is a spectrometer having a nested plurality of Mach-Zehnder interferometers (MZIs), where all MZIs share at least one surface-waveguide section in each of its sample and reference arms. The light signals in the sample and reference arms are tapped at a series of discrete locations along their length via electro-optically-controlled directional couplers, which are separated by uniform-length waveguide portions in each arm, but where the uniform lengths are different in the sample and reference arms providing a different path-length difference for the arms of each MZI. The tapped light from the sample and reference arms is recombined at a low-loss beam combiner to generate a distribution of optical power as a function of time-delay difference in the arms.
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50.发明授权公开(公告)号：US10517484B2
公开(公告)日：2019-12-31
申请号：US16506885
申请日：2019-07-09
Applicant: Omni Medsci, Inc.
Inventor： Mohammed N. Islam
IPC: G01J5/02 , A61B5/00 , G01N21/3563 , G01N33/02 , G01N33/15 , G01N33/44 , G01N33/49 , A61B5/145 , A61B5/1455 , G01J3/02 , G01J3/10 , G01J3/14 , G01J3/28 , G01J3/42 , G01J3/453 , G01N21/35 , G01N21/359 , G01N21/39 , G01N21/88 , G01N21/85 , H01S3/067 , G01N21/95 , H01S3/30 , G01J3/12 , G01M3/38 , G01J3/18 , H01S3/00
Abstract: A wearable device includes a measurement device to measure a physiological parameter adapted to be placed on a wrist or an ear of a user. A plurality of semiconductor light sources such as light emitting diodes generate corresponding output light having an initial light intensity. A receiver includes spatially separated detectors receiving reflected light from the output lights and coupled to analog to digital converters. The receiver is configured to synchronize to the semiconductor source(s). The measurement device improves signal-to-noise ratio of the output signal by increasing light intensity relative to the initial light intensity and by increasing a pulse rate. Further improvement in signal-to-noise ratio is achieved by using change detection, where the receiver compares the signals with light on and with light off.
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