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    Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers
    91.
    发明授权
    Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers 有权

    公开(公告)号：US11921035B2

    公开(公告)日：2024-03-05

    申请号：US18371245

    申请日：2023-09-21

    Applicant: MARATHON PETROLEUM COMPANY LP

    Inventor： Roy Roger Bledsoe, Jr. ,  Lance T. Campbell ,  Randy N. Ridge ,  Brian K. Wilt

    IPC: G01N21/31 ,  G01J3/28

    CPC classification number: G01N21/31 ,  G01J3/28 ,  G01J2003/2866 ,  G01N2201/127

    Abstract: Methods and assemblies may be used for determining and using standardized spectral responses for calibration of spectroscopic analyzers. The methods and assemblies may be used to calibrate or recalibrate a spectroscopic analyzer when the spectroscopic analyzer changes from a first state to a second state, the second state being defined as a period of time after a change to the spectroscopic analyzer causing a need to calibrate or recalibrate the spectroscopic analyzer. The calibration or recalibration may result in the spectroscopic analyzer outputting a standardized spectrum, such that the spectroscopic analyzer outputs a corrected material spectrum for an analyzed material, and defining the standardized spectrum. The corrected material spectrum may include signals indicative of material properties of an analyzed material, the material properties of the material being substantially consistent with material properties of the material output by the spectroscopic analyzer in the first state.

    Image sensor and method of operating
    92.
    发明授权
    Image sensor and method of operating 有权

    公开(公告)号：US11920982B2

    公开(公告)日：2024-03-05

    申请号：US17989605

    申请日：2022-11-17

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Radwanul Hasan Siddique ,  Daniel Assumpcao ,  Hyuck Choo ,  Hyochul Kim

    IPC: G01J3/18 ,  G01J3/02 ,  G01J3/28 ,  G01J3/44

    CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/18 ,  G01J3/4412

    Abstract: Optical spectrometers may be used to determine the spectral components of electromagnetic waves. Spectrometers may be large, bulky devices and may require waves to enter at a nearly direct angle of incidence in order to record a measurement. What is disclosed is an ultra-compact spectrometer with nanophotonic components as light dispersion technology. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The spectrometer may be capable of handling about 200 nm bandwidth. The ultra-compact spectrometer may be able to read image data in the visible (400-600 nm) and to read spectral data in the near-infrared (700-900 nm) wavelength range. The surface area of the spectrometer may be about 1 mm2, allowing it to fit on mobile devices.

    SYSTEMS AND METHODS FOR HYPERSPECTRAL IMAGING OF PLANTS
    96.
    发明公开
    SYSTEMS AND METHODS FOR HYPERSPECTRAL IMAGING OF PLANTS 审中-公开

    公开(公告)号：US20240060883A1

    公开(公告)日：2024-02-22

    申请号：US18268130

    申请日：2021-12-17

    Applicant: Terramera, Inc.

    Inventor： Austin Caulfield Rothwell

    IPC: G01N21/3563 ,  G01J3/28

    CPC classification number: G01N21/3563 ,  G01J3/2823 ,  G01N2021/8466

    Abstract: Systems and methods for hyperspectral imaging of plants are provided. Multispectral images of plants are transformed, e.g. by interpolation along a spectral axis, to generate hyperspectral images of plants. The transformation can be based on spectral bases formed from hyperspectral sample images including images of plant matter. Plant characteristics, such as plant health, may be predicted based on the hyperspectral image. Plant health may be predicted by comparing derivatives of reflectance values with respect to wavelength for a plant of a given image relative to a reference derivative based on a reference hyperspectral image. The derivatives may be compared by determining a regression loss.

    Instrument monitoring and correction
    99.
    发明授权
    Instrument monitoring and correction 有权

    公开(公告)号：US11892351B2

    公开(公告)日：2024-02-06

    申请号：US17855133

    申请日：2022-06-30

    Applicant: DATACOLOR INC.

    Inventor： Zhiling Xu ,  William Bishop

    IPC: G01J3/28 ,  G01J3/02

    CPC classification number: G01J3/28 ,  G01J3/0297

    Abstract: In the disclosure provided herein, the described apparatus, systems and methods are directed to compensation of errors caused by the difference between the specular port and the sphere in a sphere-based color-measurement instrument, and improvement of the performance of the instrument. In one or more implementations, described approaches eliminate the need for hardware replacement, and therefore reduce costs associated with the operation of color measurement instruments.

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