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    High sensitivity frequency-domain spectroscopy system
    33.
    发明授权
    High sensitivity frequency-domain spectroscopy system 有权

    公开(公告)号：US11747204B2

    公开(公告)日：2023-09-05

    申请号：US17394143

    申请日：2021-08-04

    Applicant: The Johns Hopkins University

    Inventor： Scott M. Hendrickson ,  Jeremiah J. Wathen ,  Michael J. Fitch ,  David W. Blodgett ,  Vincent R. Pagan

    IPC: G01J3/433 ,  G02B3/04 ,  G01J3/02 ,  G01J3/28

    CPC classification number: G01J3/4338 ,  G01J3/0208 ,  G01J3/0264 ,  G01J3/2823 ,  G02B3/04 ,  G01J2003/4332

    Abstract: A system includes first and second radiation sources, first and second detectors, a signal digitizer, a controller, and an analyzer. The first and second radiation sources generate respective first and second beams of radiation to irradiate a target. The first beam and second beams each include a first wavelength operated at a first modulation frequency and a second wavelength operated at a second modulation frequency. The first and second detectors each include a photo-sensitive element that generate first or second detection signals, a Faraday shielding enclosure, a signal amplifier, and a frequency mixer to frequency-adjust the first or second detection signals. The controller provides timing information to inform an activation scheme of the first and second radiation sources and corresponding radiation detection events at the first and second detectors. The analyzer analyzes the first and second detection signals and determines at least amplitude and phase information of the scattered radiation.

    Systems and methods for spectral identification and optical sorting of materials
    35.
    发明授权
    Systems and methods for spectral identification and optical sorting of materials 有权

    公开(公告)号：US11731171B2

    公开(公告)日：2023-08-22

    申请号：US16611992

    申请日：2018-05-09

    Applicant: 6511660 CANADA INC.

    Inventor： Julien Neige ,  Nathanaël Lortie ,  Alain Brasseur

    IPC: B07C5/342 ,  G01J3/02 ,  G01J3/10 ,  G01J3/42

    CPC classification number: B07C5/342 ,  G01J3/0208 ,  G01J3/108 ,  G01J3/42

    Abstract: Spectral identification and optical sorting systems and methods are disclosed. The system can include a conveying roller having a conveying surface on its outer lateral periphery along which a flow of objects can be transported; an illumination unit to illuminate the objects on the conveying surface; a spectral detector to detect object light from the objects and output spectral data; and a processor to derive, from the measured spectral data, material-specific information associated with the objects. A sorting unit can be provided to sort the objects based on the material-specific information. An infrared emitter-detector assembly for measuring a mid-wavelength infrared (MWIR) response of an object is also disclosed and includes an illumination unit having a blackbody-like source operated at a temperature of about at least 2000 kelvins; and a MWIR detector having a detection waveband including wavelengths between about 2.5 and 8 micrometers to detect object light from the object.

    Microelectromechanical system (MEMS) and (MEM) optical interferometer for hyper-spectral imaging and analysis
    37.
    发明授权
    Microelectromechanical system (MEMS) and (MEM) optical interferometer for hyper-spectral imaging and analysis 有权

    公开(公告)号：US11725989B2

    公开(公告)日：2023-08-15

    申请号：US16283888

    申请日：2019-02-25

    Applicant: Green Vision Systems Ltd.

    Inventor： Danny S. Moshe

    IPC: G01J3/45 ,  G01J3/02 ,  G01J3/453 ,  G02B26/06 ,  B81B7/02 ,  G01B9/02 ,  G02B7/182

    CPC classification number: G01J3/45 ,  B81B7/02 ,  G01B9/02049 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/4535 ,  G02B26/06 ,  G02B7/182

    Abstract: A microelectromechanical system (MEMS) (10), and a microelectromechanical (MEM) optical interferometer (18), for hyper-spectral imaging and analysis. System (10) includes matrix configured collimating micro lens (16), for receiving and collimating electromagnetic radiation (60) emitted by objects (12) in a scene or sample (14); microelectromechanical optical interferometer (18), for forming divided collimated object emission beam (72) having an optical path difference, and for generating an interference image exiting optical interferometer (18); matrix configured focusing micro lens (20); micro detector (22), for detecting and recording generated interference images; and micro central programming and signal processing unit (24). Applicable for on-line (e.g., real time or near-real time) or off-line hyper-spectral imaging and analyzing, on a miniaturized or ‘micro’ (sub-centimeter [1 cm (10 mm) or less], or sub-millimeter) scale, essentially any types or kinds of biological, physical, or/and chemical, (i.e., biophysicochemical) objects.

    Multi-Application Optical Sensing Apparatus and Method Thereof
    40.
    发明公开
    Multi-Application Optical Sensing Apparatus and Method Thereof 审中-公开

    公开(公告)号：US20230204423A1

    公开(公告)日：2023-06-29

    申请号：US18179117

    申请日：2023-03-06

    Applicant: Artilux, Inc.

    Inventor： Chih-Wei Yeh ,  Hung-Chih Chang ,  Yun-Chung Na ,  Tsung-Ting Wu ,  Shu-Lu Chen

    IPC: G01J3/50 ,  G01B11/24 ,  G01J3/02 ,  G01J3/51

    CPC classification number: G01J3/50 ,  G01B11/24 ,  G01J3/0208 ,  G01J3/51

    Abstract: Systems, apparatuses, and methods for multi-application optical sensing are provided. For example, an optical sensing apparatus can include a photodetector array, a first circuitry, and a second circuitry. The photodetector array includes a plurality of photodetectors, wherein a first subset of the plurality of photodetectors are configured as a first region for detecting a first optical signal, and a second subset of the plurality of photodetectors are configured as a second region for detecting a second optical signal. The first circuitry, coupled to the first region, is configured to perform a first function based on the first optical signal to output a first output result. The second circuitry, coupled to the second region, is configured to perform a second function based on the second optical signal to output a second output result.

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