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    Spectroscopy systems and methods using quantum cascade laser arrays with lenses
    83.
    发明授权
    Spectroscopy systems and methods using quantum cascade laser arrays with lenses 有权

    公开(公告)号：US09784620B2

    公开(公告)日：2017-10-10

    申请号：US14985722

    申请日：2015-12-31

    Applicant: Pendar Technologies, LLC

    Inventor： Mark F. Witinski ,  Laurent Diehl ,  Christian Pfluegl

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

    CPC classification number: G01J3/42 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/10 ,  G01J2003/102

    Abstract: A spectroscopy system includes an array of quantum cascade lasers (QCLs) that emits an array of non-coincident laser beams. A lens array coupled to the QCL array substantially collimates the laser beams, which propagate along parallel optical axes towards a sample. The beams remain substantially collimated over the lens array's working distance, but may diverge when propagating over longer distances. The collimated, parallel beams may be directed to/through the sample, which may be within a sample cell, flow cell, multipass spectroscopic absorption cell, or other suitable holder. Alternatively, the beams may be focused to a point on, near, or within the target using a telescope or other suitable optical element(s). When focused, however, the beams remain non-coincident; they simply intersect at the focal point. The target transmits, reflects, and/or scatters this incident light to a detector, which transduces the detected radiation into an electrical signal representative of the target's absorption or emission spectrum.

    Linear frequency domain grating and multiband spectrometer having same
    84.
    发明授权
    Linear frequency domain grating and multiband spectrometer having same 有权

    公开(公告)号：US09778107B2

    公开(公告)日：2017-10-03

    申请号：US15075187

    申请日：2016-03-20

    Applicant: Zhilin Hu

    Inventor： Zhilin Hu

    IPC: G01J3/28 ,  G01J3/18 ,  G02B5/18 ,  G02B1/14 ,  G02B5/04 ,  G01J3/14 ,  G01J3/02 ,  G01J3/12

    CPC classification number: G01J3/18 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/14 ,  G01J3/28 ,  G01J2003/1208 ,  G02B1/14 ,  G02B5/04 ,  G02B5/1814

    Abstract: A linear frequency domain grating and a multiband spectrometer having the same. The linear frequency domain grating includes a dispersive optical element and a diffractive optical element being substantially in contact with the dispersive optical element or being substantially integrated with the dispersive optical element, configured to receive a beam of incident light along an incident optical path, and diffract and disperse it into its constituent spectrum of frequencies of the light that is output from the dispersive optical element along an output optical path, such that the output light has a spatial distribution on a focal plane in the output optical path that is a linear function of the frequency. The linear frequency domain grating is a transmissive-type grating or a reflective-type grating, depending on whether the incident optical path and the output optical path are in different sides or the same side of the diffractive optical element.

    Spectroscopic camera
    88.
    发明授权
    Spectroscopic camera 有权

    公开(公告)号：US09766125B2

    公开(公告)日：2017-09-19

    申请号：US14185473

    申请日：2014-02-20

    Applicant: SEIKO EPSON CORPORATION

    Inventor： Tsugio Gomi

    IPC: G01J3/28 ,  G01J3/51 ,  G01J3/02 ,  G01J3/26

    CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/0232 ,  G01J3/0235 ,  G01J3/027 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/26 ,  G01J3/513

    Abstract: A spectrometry apparatus includes a light incident section on which incident light from an image pickup target is made incident, an image pickup section provided on an optical path of the incident light input from the light incident section, a variable wavelength interference filter configured to transmit light having a predetermined wavelength from the incident light input from the light incident section and capable of changing the wavelength of the light to be transmitted, and a filter-position switching section configured to advance and retract the variable wavelength interference filter to and from an optical path of the incident light.

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