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    METHOD OF SPECTROMETER AND SPECTROMETER
    2.
    发明申请
    METHOD OF SPECTROMETER AND SPECTROMETER 审中-公开
    光谱仪和光谱仪的方法

    公开(公告)号：US20160320237A1

    公开(公告)日：2016-11-03

    申请号：US15206992

    申请日：2016-07-11

    Applicant: Graduate School at Shenzhen, Tsinghua University

    Inventor： Kai NI ,  Qian ZHOU ,  Jinchao PANG ,  Jinchao ZHANG ,  Rui TIAN ,  Mingfei XU ,  Hao DONG

    IPC: G01J3/18 ,  G01J3/28

    CPC classification number: G01J3/18 ,  G01J3/28 ,  G01J2003/1842

    Abstract: A design method of a spectrometer and a spectrometer are disclosed, including the following steps: 1) determining an incident angle of a second incident slit and a groove-shaped cycle of a concave grating; 2) estimating a blaze angle of the concave grating, determining a surface material and a groove-shaped structure of the concave grating; 3) acquiring wavelength-diffraction efficiency curves; 4) determining values of incident angles θA1 and θA3 and values of wavelengths λ2 and λ3, and setting λ4 to equal λ2; 5) acquiring a record structural parameter and a use structural parameter; 6) determining a manufacture parameter of the concave grating; 7) determining locations of the three incident slits and the three photodetectors relative to the concave grating. The spectrometer acquired by using this method has relatively high diffraction efficiency in most spectrum regions and effectively alleviates the problem of relatively low diffraction efficiency in a broad spectrum region.

    Abstract translation: 公开了一种光谱仪和光谱仪的设计方法，包括以下步骤：1）确定第二入射狭缝的入射角和凹光栅的槽形循环; 2）估计凹形光栅的火焰角，确定凹形光栅的表面材料和凹槽形结构; 3）获取波长衍射效率曲线; 4）确定入射角θA1和θA3的值和波长λ2和λ3的值，并将λ4设置为等于λ2; 5）获取记录结构参数和使用结构参数; 6）确定凹形光栅的制造参数; 7）确定三个入射狭缝和三个光电探测器相对于凹光栅的位置。 通过使用该方法获得的光谱仪在大多数光谱区域中的衍射效率相对较高，有效地缓解了广谱区域中衍射效率相对较低的问题。

    SPECTROMETER AND MANUFACTURING METHOD THEREOF
    6.
    发明申请
    SPECTROMETER AND MANUFACTURING METHOD THEREOF 审中-公开

    公开(公告)号：US20180017443A1

    公开(公告)日：2018-01-18

    申请号：US15360962

    申请日：2016-11-23

    Applicant: OTO PHOTONICS INC.

    Inventor： Chien-Hsiang Hung

    IPC: G01J3/18 ,  G01J3/02 ,  G01J3/28

    CPC classification number: G01J3/1895 ,  G01J3/021 ,  G01J3/0259 ,  G01J3/20 ,  G01J3/28 ,  G01J2003/1842

    Abstract: A spectrometer includes an input unit for receiving an optical signal, a diffraction grating disposed on the transmission path of the optical signal for dispersing the optical signal into a plurality of spectral rays, an image sensor disposed on the transmission path of at least a portion of the spectral rays, and a waveguide device. A waveguide space is formed between the first and second reflective surfaces of the waveguide device. The optical signal is transmitted from the input unit to the diffraction grating via the waveguide space. The portion of the spectral rays is transmitted to the image sensor via the waveguide space. At least one opening is formed on the waveguide device, and is substantially parallel to the first and/or second reflective surface. A portion of the spectral rays and/or the optical signal diffuses from the opening out of the waveguide space without reaching the image sensor.

    OPTICAL SENSOR
    7.
    发明申请
    OPTICAL SENSOR 审中-公开

    公开(公告)号：US20170244218A1

    公开(公告)日：2017-08-24

    申请号：US15248763

    申请日：2016-08-26

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Kwang Ryong OH

    IPC: H01S5/14 ,  G01J3/45 ,  G01J3/18 ,  H01S5/028

    CPC classification number: H01S5/141 ,  G01J3/1804 ,  G01J2003/1842 ,  G01J2003/451 ,  H01S5/0028 ,  H01S5/028 ,  H01S5/4062 ,  H01S5/4068

    Abstract: Disclosed is an optical sensor, including an external cavity laser configured to output sensing light and reference light; and a photodetector configured to detect a beating signal by an interference of the sensing light and the reference light output from the external cavity laser, in which the external cavity laser includes a reflecting filter including a sensing grating, to which a sensing object is attachable, and a reference grating, which is disposed on the same plane as that of the sensing grating, and outputs sensing light reflected from the sensing grating and reference light reflected from the reference grating. Accordingly, the optical sensor does not require a high-resolution spectroscope and has improved resolution and sensitivity.

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