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    Single-fiber color identification
    22.
    发明授权
    Single-fiber color identification 有权

    公开(公告)号：US11946808B2

    公开(公告)日：2024-04-02

    申请号：US17697217

    申请日：2022-03-17

    Applicant: SUBCOM, LLC

    Inventor： Rejoy Isaac ,  Marsha Ann Spalding ,  Bryce Currier ,  Geraldine Paraiso ,  Ralph J. Rue

    IPC: G01J3/28 ,  G01J3/46 ,  G01M11/00

    CPC classification number: G01J3/2823 ,  G01J3/463 ,  G01M11/30

    Abstract: Disclosed are a system and techniques to determine a color of an optical fiber in a fiber optic cable. A spectrophotometer camera may obtain a color value of the optical fiber. A fiber adaptor is operable to hold a single optical fiber of a fiber optic cable in a field of view of the spectrophotometer camera. A memory storing instructions that, when executed by a processor, enable identifying a color of the optical fiber. The color value may be compared to a color value of a number of reference colors. A color match score value may be generated for the color value with respect to each reference color. A confidence value may be obtained for a pair of color match scores that are closest in score value. Based on the confidence value, one of the reference colors is identified as a color of the optical fiber.

    MULTISPECTRAL IMAGER WITH ENLARGED SPECTRAL DOMAIN
    24.
    发明公开
    MULTISPECTRAL IMAGER WITH ENLARGED SPECTRAL DOMAIN 审中-公开

    公开(公告)号：US20240102861A1

    公开(公告)日：2024-03-28

    申请号：US18039052

    申请日：2021-11-18

    Applicant: SILIOS TECHNOLOGIES

    Inventor： Stéphane TISSERAND ,  Laurent ROUX

    IPC: G01J3/28 ,  G01J3/26

    CPC classification number: G01J3/2823 ,  G01J3/26 ,  G01J2003/1239

    Abstract: Disclosed is a multispectral imager designed for analyzing a spectral domain of interest, comprising an image sensor (100) formed of an array of macropixels and comprising a first and a second photosensitive pixel (115) respectively dedicated to a first and a second spectral band, and a filtering structure (150) comprising a first and second interference filter (160) which are superimposed respectively on the first and second photosensitive pixel (115) and which are arranged to respectively transmit a first and second electromagnetic radiation belonging respectively to the first and second spectral bands, the multispectral imager in which a wavelength half of that of the second electromagnetic radiation is located in the spectral domain of interest, and a filtering layer (170) is superimposed on the second photosensitive pixel (160) and configured to block the passage of a third electromagnetic radiation of wavelength half that of the second electromagnetic radiation.

    Construction method and system for visible near-infrared spectrum dictionary
    26.
    发明授权
    Construction method and system for visible near-infrared spectrum dictionary 有权

    公开(公告)号：US11935268B2

    公开(公告)日：2024-03-19

    申请号：US18298258

    申请日：2023-04-10

    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Tianxu Zhang ,  Xin Zhou ,  Wandong He

    IPC: G06T7/90 ,  G01J3/28

    CPC classification number: G06T7/90 ,  G01J3/2823

    Abstract: A construction method and system for a visible near-infrared spectrum dictionary is provided. The method includes: constructing a four-primary color chromaticity cone by using normalized spectral response curves of four primary colors of a visible light camera as spectral basis functions; performing weighted combination on the spectral basis functions and forming an initial visible near-infrared spectrum dictionary; acquiring points on the four-primary color chromaticity cone on the basis of the initial visible red infrared spectrum dictionary according to different spectral resolutions and performing discretization, and forming words in the initial visible near-infrared spectrum dictionary; clustering chromaticity coordinates corresponding to the words into different groups, performing weighted combination on multi-scale spectral response curves corresponding to different group types, generating phrases or sentences in the dictionary, and generating a final visible near-infrared spectrum dictionary. The visible near-infrared spectrum dictionary can support a novel computational spectrometry imaging spectrometer.

    OPTICAL CHARACTERISTIC MEASURING APPARATUS, WAVELENGTH SHIFT CORRECTING APPARATUS, WAVELENGTH SHIFT CORRECTION METHOD, AND PROGRAM
    28.
    发明公开
    OPTICAL CHARACTERISTIC MEASURING APPARATUS, WAVELENGTH SHIFT CORRECTING APPARATUS, WAVELENGTH SHIFT CORRECTION METHOD, AND PROGRAM 审中-公开

    公开(公告)号：US20240068870A1

    公开(公告)日：2024-02-29

    申请号：US18272256

    申请日：2022-01-11

    Applicant: Konica Minolta, Inc.

    Inventor： Takashi KAWASAKI

    IPC: G01J3/28 ,  G01J3/18

    CPC classification number: G01J3/2823 ,  G01J3/18

    Abstract: A wavelength of incident light is measured based on signals from a plurality of pixels of a photoelectric conversion element that are arranged in a dispersion direction in which the incident light is dispersed by a spectroscopic section. In correction of a shift in wavelength, a measured amount of shift in wavelength that is a difference between a measured value obtained when an emission line wavelength of incident light from a light source for wavelength shift correction that emits light including an emission line at least one wavelength in a range of wavelengths into which light can be dispersed by the spectroscopic section is measured and an original emission line wavelength is calculated. A reference amount of shift in emission line wavelength is calculated by a polynomial in which a characteristic of a wavelength shift that occurs is represented by a linear or higher polynomial with a variable indicating the wavelength or a parameter relating to the wavelength. Each coefficient of the polynomial is determined based on the calculated measured amount of shift in emission line wavelength and the reference amount of shift in emission line wavelength, and the wavelength of the incident light is corrected based on the determined polynomial.

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