LIBS analyzer sample presence detection system and method

    公开(公告)号:US09664565B2

    公开(公告)日:2017-05-30

    申请号:US14632419

    申请日:2015-02-26

    Applicant: SciAps, Inc.

    CPC classification number: G01J3/443 G01J3/027 G01J3/10

    Abstract: A LIBS analyzer, preferably handheld, includes a laser configured to produce a plasma on a sample and a spectrometer responsive to radiation emitted from the plasma and configured to produce a spectrum. A controller subsystem is configured to control energizing the laser and to analyze the resulting spectrum from each laser pulse to determine if the laser is aimed at a sample. If the analyzed spectrum reveals the laser is not aimed at the sample, the controller subsystem halts the laser puke sequence.

    MICROSCOPE
    75.
    发明申请
    MICROSCOPE 审中-公开

    公开(公告)号:US20170146786A1

    公开(公告)日:2017-05-25

    申请号:US15422651

    申请日:2017-02-02

    Abstract: A microscope that makes it possible to acquire a hyperspectral image with high data precision includes a light source, an illumination optical system, an image-forming optical system, an imaging unit, a spectroscope, a stage, a drive unit, and a control unit. The illumination optical system converges, at a converging angle θ, illuminating light in a wavelength band included in the near-infrared region output from the light source, and emits the converged illuminating light onto the object being observed. The image-forming optical system forms an image based on transmitted and scattered light generated by the observed object by emission of the illuminating light onto the observed object. The sin θ is set to a value that does not exceed the numerical aperture of an objective lens that receives the transmitted and scattered light from the observed object.

    FREQUENCY HOPPING SPREAD SPECTRUM (FHSS) FOURIER TRANSFORM SPECTROSCOPY

    公开(公告)号:US20170138847A1

    公开(公告)日:2017-05-18

    申请号:US15319313

    申请日:2015-06-16

    CPC classification number: G01N21/3586 G01J3/10 G01J3/42 G01N2021/3595

    Abstract: Apparatus and techniques for broadband Fourier transform spectroscopy can include frequency hopping spread-spectrum spectroscopy approaches. For example, an excitation source power can be spread over a specified frequency bandwidth, such as by applying a sequence of short, transform-limited pulses to a sample. Each pulse can include a specified carrier frequency, and a corresponding bandwidth of the individual pulse can be determined by a frequency domain representation when Fourier transformed. A series of short excitation pulses can be used to create an excitation sequence, such as to deliver a specified or desired amount of power to the sample, such as by having the excitation source enabled for a time comparable to a free induction decay (FID) dephasing time.

    GAS ANALYZING APPARATUS
    79.
    发明申请

    公开(公告)号:US20170115219A1

    公开(公告)日:2017-04-27

    申请号:US15332961

    申请日:2016-10-24

    Applicant: HORIBA, Ltd.

    Inventor: Takuya Ido

    Abstract: A gas analyzing apparatus includes a plurality of light sources, an inlet, a light detector, and an analyzing unit. The plurality of light sources simultaneously output a plurality of measurement light beams. The inlet introduces the plurality of measurement light beams into a measurement space. The light detector measures total intensity. The analyzing unit analyzes the target gases based on a difference between a measured target intensity and a reference intensity, in which the measured target intensity is a total intensity measured by the light detector after passing through the measurement space in which one of the target gases exists, while the reference intensity is the total intensity measured by the light detector after passing through the measurement space in which none of the target gases exists.

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