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    SINGLE-PHOTON TIMING SYSTEM AND METHOD
    71.
    发明公开
    SINGLE-PHOTON TIMING SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20240183709A1

    公开(公告)日：2024-06-06

    申请号：US18287829

    申请日：2022-04-20

    Applicant: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE

    Inventor： Shu-Wei HUANG ,  Bowen LI

    IPC: G01J1/44 ,  G01J3/18 ,  G01J3/28

    CPC classification number: G01J1/44 ,  G01J3/1895 ,  G01J3/2803 ,  G01J2001/442

    Abstract: A time-to-frequency converter transforms an initial single-photon pulse into a transformed pulse such that the temporal waveform of the initial pulse is mapped to the spectrum of the transformed pulse. The time-to-frequency converter includes a dispersive optical element followed by a time lens. The spectrum of the transformed pulse is then measured to determine the arrival time of the initial pulse. The spectrum can be measured using a photon-counting spectrometer that spatially disperses the transformed pulse onto an single-photon detector array. Alternatively. an additional dispersive element can be used with the time-to-frequency converter to implement a time magnifier. The arrival time of the resulting time-magnified pulse can then be measured using time-correlated single-photon counting. This arrival time can then be divided by the magnification factor of the time magnifier to obtain the arrival time of the initial pulsc.

    Systems and methods for
    76.
    发明授权
    Systems and methods for 有权

    公开(公告)号：US11982568B2

    公开(公告)日：2024-05-14

    申请号：US17723186

    申请日：2022-04-18

    Applicant: CHEMIMAGE CORPORATION

    Inventor： Shawna Tazik ,  Alyssa Zrimsek ,  Heather Gomer ,  Jihang Wang ,  Patrick J. Treado

    IPC: G01J3/28 ,  G01J3/10

    CPC classification number: G01J3/2823 ,  G01J3/10 ,  G01J2003/283

    Abstract: Systems for and methods for in situ optimization of tunable light emitting diode sources are disclosed herein. During operation, the systems and methods obtain real-time feedback from an image sensor, and that feedback is used to tune the tunable LEDs. By tuning the tunable LEDs, the best values for the LED spectral output can be selected based on the feedback from the image sensor, and an image with improved contrast is obtained. Alternatively, the amount of time to obtain an image with acceptable contrast is reduced.

    Systems and methods for characterizing spectral reflectance of real world objects
    77.
    发明授权
    Systems and methods for characterizing spectral reflectance of real world objects 有权

    公开(公告)号：US11976976B2

    公开(公告)日：2024-05-07

    申请号：US18078677

    申请日：2022-12-09

    Applicant: FORD GLOBAL TECHNOLOGIES, LLC

    Inventor： Michael V. Morelli ,  Laurens M. Schouten-Evers ,  Minseok Oh

    IPC: G01J3/42 ,  G01J3/02 ,  G01J3/10 ,  G01J3/28

    CPC classification number: G01J3/42 ,  G01J3/0208 ,  G01J3/108 ,  G01J3/2823 ,  G01J2003/425

    Abstract: Systems, methods, and computer-readable media are disclosed for a systems and methods for intra-shot dynamic LIDAR detector gain. One example method my include receiving first image data associated with a first image of an object illuminated at a first wavelength and captured by a camera at the first wavelength, the first image data including first pixel data for a first pixel of the first image and second pixel data for a second pixel of the first image. The example method may also include calculating a first reflectance value for the first pixel using the first pixel data. The example method may also include calculating a second reflectance value for the second pixel using the second pixel data. The example method may also include generating, using first reflectance value and the second reflectance value, a first reflectance distribution of the object.

    Spectrometer and computer program
    78.
    发明授权
    Spectrometer and computer program 有权

    公开(公告)号：US11976974B2

    公开(公告)日：2024-05-07

    申请号：US17663906

    申请日：2022-05-18

    Applicant: SEIKO EPSON CORPORATION

    Inventor： Tsugio Gomi

    IPC: G01J3/28 ,  G01J3/12

    CPC classification number: G01J3/2803 ,  G01J3/2823 ,  G01J2003/1213

    Abstract: A spectroscopic camera includes a spectroscopic element and a light receiver, and a method for correcting the spectroscopic camera includes causing light having a first wave number from a spectroscopic light source to be incident on the spectroscopic element, causing the light receiver to receive light having a second wave number and outputted from the spectroscopic element, generating a matrix representing the spectral characteristics of the light having the second wave number based on the output from the light receiver, and generating a correction matrix based on the inverse matrix of the matrix and storing the correction matrix in a storage section.

    ENHANCED FULL RANGE OPTICAL COHERENCE TOMOGRAPHY
    79.
    发明公开
    ENHANCED FULL RANGE OPTICAL COHERENCE TOMOGRAPHY 审中-公开

    公开(公告)号：US20240142307A1

    公开(公告)日：2024-05-02

    申请号：US18542051

    申请日：2023-12-15

    Applicant: Topcon Corporation

    Inventor： Xiang WEI ,  Tony KO

    IPC: G01J3/453 ,  G01J3/28

    CPC classification number: G01J3/453 ,  G01J3/2823 ,  G01J2003/4538

    Abstract: A full-range imaging method doubles imaging range of conventional techniques by removing mirror images of an imaged object that limit conventional images to a “half-range” and that are caused in part by the loss of phase information in a detected signal. Phase information of the detected signal is reconstructed with an averaging technique based on a modulated phase induced in the detected signal during scanning.

    THREE PHASE SPECTRAL INTERFEROMETRY
    80.
    发明公开
    THREE PHASE SPECTRAL INTERFEROMETRY 审中-公开

    公开(公告)号：US20240133743A1

    公开(公告)日：2024-04-25

    申请号：US18047120

    申请日：2022-10-17

    Applicant: Lawrence Livermore National Security, LLC

    Inventor： Ryan Douglas Muir ,  John E. Heebner ,  Daniel Ernest Mittelberger

    IPC: G01J3/45 ,  G01J3/02 ,  G01J3/28

    CPC classification number: G01J3/45 ,  G01J3/0205 ,  G01J3/2823

    Abstract: Methods, systems and devices are described that enable measurement and characterization of complex laser pulses by relying on three interferograms that are measured simultaneously. The described three-phase spectral interferometry (3 PSI) can meet the growing demand for optical recorders with long record and 1 ps or finer resolution. An example three-phase interferometric system includes a three-output optical splitter with a first input port to receive the input optical signal, a second input port to receive a reference optical signal with one or more unknown spectral characteristics. The three output ports of the optical splitter produce interferograms that correspond to relative phase shifts of substantially 120 degrees. Detectors are positioned to receive and measure the interferograms, which allows determination of the amplitude and phase of the input optical signal with very high accuracy. The described techniques include may improvements in the alignment, calibration and signal retrieval procedures associated with the 3PSI system.

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