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    ACTIVE HYPERSPECTRAL IMAGER
    85.
    发明申请
    ACTIVE HYPERSPECTRAL IMAGER 审中-公开

    公开(公告)号：US20180309941A1

    公开(公告)日：2018-10-25

    申请号：US15954373

    申请日：2018-04-16

    Applicant: DRS Network & Imaging Systems, LLC

    Inventor： Marco A. Lopez ,  Eden Y.C. Mei ,  Eric Anderson

    IPC: H04N5/33 ,  G01J3/28 ,  G01J3/45 ,  H04N5/232 ,  G06T5/10 ,  G06T5/50

    Abstract: Systems and methods are disclosed for generating hyperspectral images, which may correspond to a three dimensional image in which two dimensions correspond to a spatial field of view and a third dimension corresponds to a frequency domain absorption spectrum. Disclosed systems and methods include those employing dual optical frequency comb Fourier transform spectroscopy and computational imaging for generation of hyperspectral images. Such a combination advantageously allows for imaging systems to exhibit low size, weight, and power, enabling small or handheld sized imaging devices.

    Measurement device, electronic apparatus, and measurement method
    86.
    发明授权
    Measurement device, electronic apparatus, and measurement method 有权

    公开(公告)号：US10101205B2

    公开(公告)日：2018-10-16

    申请号：US15292477

    申请日：2016-10-13

    Applicant: Seiko Epson Corporation

    Inventor： Hideaki Kasahara ,  Masashi Kanai

    IPC: G01B9/02 ,  G01J3/45 ,  G01J3/26 ,  G01J3/02 ,  G01J3/28

    Abstract: A spectroscopic camera includes a wavelength variable interference filter, and an image sensor that receives light which is transmitted through the wavelength variable interference filter. Measurement is implemented a plurality of times by causing measurement light to be incident to the wavelength variable interference filter and changing the wavelength of light that is transmitted by the wavelength variable interference filter. Reflectance based on the intensity of light when a first pixel of the image sensor receives light of a target wavelength, is predicted in the respective plurality of repetitions of measurement on the basis of a light reception central wavelength of light that the first pixel receives, and reflectance that is calculated on the basis of the intensity of light that is received by the first pixel.

    GENERAL NOISE SUPPRESSION SCHEME WITH REFERENCE DETECTION IN OPTICAL HETERODYNE SPECTROSCOPY
    87.
    发明申请
    GENERAL NOISE SUPPRESSION SCHEME WITH REFERENCE DETECTION IN OPTICAL HETERODYNE SPECTROSCOPY 审中-公开

    公开(公告)号：US20180283950A1

    公开(公告)日：2018-10-04

    申请号：US15941510

    申请日：2018-03-30

    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

    Inventor： Nien-Hui Ge ,  Yuan Feng ,  Ilya Vinogradov

    IPC: G01J3/45 ,  G01J3/02

    CPC classification number: G01J3/45 ,  G01J3/027 ,  G01J3/433 ,  G01J9/04

    Abstract: A heterodyne optical spectroscopy system comprises a light source that acts as a local oscillator (LO); a beam splitting component that generates a reference beam from the LO; a signal component that generates a sample signal from a sample; a beam blocker that can turn off the sample signal to generate blank shots; a composite signal detection subsystem that detects a heterodyned signal that is a mix of the sample signal and a portion of the LO; a composite reference detection subsystem synchronized to the signal detection subsystem to detect a portion of the reference beam; and a processor that processes digital signals from the signal detection subsystem and the reference detection subsystem. A very versatile reference scheme is developed to treat different heterodyne spectroscopies in a unified way, which achieves optimal noise suppression.

    Optical chemical analyser and liquid depth sensor
    89.
    发明授权
    Optical chemical analyser and liquid depth sensor 有权

    公开(公告)号：US10041880B2

    公开(公告)日：2018-08-07

    申请号：US14758914

    申请日：2014-01-09

    Applicant: International Moisture Analysers Limited

    Inventor： Paul Stockwell ,  David Widdup ,  Michael Foster ,  Jonathan Storey

    IPC: G01J3/44 ,  G01N21/45 ,  G01N21/65 ,  G01N21/85 ,  G01J3/45

    CPC classification number: G01N21/45 ,  G01J3/4412 ,  G01J3/45 ,  G01N21/65 ,  G01N21/85 ,  G01N21/8507

    Abstract: An optical chemical analyzer comprises a source of a first amount of radiation (46), an optics module configured to direct the first amount of radiation such that it is incident on or passes though a target (14) at a target location, the optics module further being configured to receive a second amount of Raman scattered radiation from the target and direct the second amount of radiation (206) to a Spatial Interference Fourier Transform (SIFT) module, the SIFT module including a first dispersive element (216) and a second dispersive element (218), the SIFT module being configured such that a portion of the second amount of radiation is received by the first dispersive element and interferes with a portion of the second amount of radiation received by the second dispersive element to form an interference pattern; the SIFT module further comprising a detector (48) configured to capture an image of at least a portion of the interference pattern and produce a detector signal (226) based on the captured image; and a processor configured to receive the detector signal from the detector and perform a Fourier transform on the detector signal to thereby obtain a frequency spectrum of the second amount of radiation.

    OPTICAL INTERFEROMETER
    90.
    发明申请
    OPTICAL INTERFEROMETER 审中-公开

    公开(公告)号：US20180217001A1

    公开(公告)日：2018-08-02

    申请号：US15748286

    申请日：2015-09-03

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Yoshihisa WARASHINA ,  Tomofumi SUZUKI ,  Kohei KASAMORI ,  Ryosuke OKUMURA ,  Kyosuke KOTANI

    IPC: G01J3/45 ,  G01B9/02

    Abstract: An optical interferometer includes a branching-combining unit, a first optical system, a second optical system, and a drive unit. The branching-combining unit includes a branching surface, an incident surface, a first output surface, a combining surface, and a second output surface on an interface of a transparent member, the branching surface partially reflects incident light and outputs as first branched light, and transmits the rest of the incident light into the interior as second branched light, the combining surface partially combines the first branched light and the second branched light to be output to the outside as first combined light, and combines the rest of the first branched light and the second branched light to be propagated into the interior as second combined light, and the second output surface partially outputs the second combined light to the outside.

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