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    Optical receiver and laser radar with scan operation
    1.
    发明授权
    Optical receiver and laser radar with scan operation 有权

    公开(公告)号：US10408924B2

    公开(公告)日：2019-09-10

    申请号：US15299651

    申请日：2016-10-21

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Bongki Mheen ,  Hong-Seok Seo ,  Min Hyup Song ,  Gyu Dong Choi

    IPC: G01S7/481 ,  G01J1/44 ,  G01S7/486 ,  H04B10/60 ,  G01S17/42 ,  G01S17/89

    Abstract: There are provided an optical receiver and a laser radar including the same. The optical receiver includes a plurality of optical detecting units configured to convert an optical signal reflected from a target into an electrical signal and to output the electrical signal, a signal combiner configured to combine output signals of the plurality of light detecting regions, a plurality of switches provided between the plurality of optical detecting units and the signal combiner, and a controller configured to control the plurality of switches so that the plurality of optical detecting units are selectively connected to the signal combiner based on whether the optical signal to reflected from the target is input. Therefore, it is possible to make a module small, to improve stability and reliability, and to reduce a signal to noise ratio.

    Spectroscopic apparatus and spectroscopic method using time resolved coding
    4.
    发明授权
    Spectroscopic apparatus and spectroscopic method using time resolved coding 有权

    公开(公告)号：US11747281B2

    公开(公告)日：2023-09-05

    申请号：US17618205

    申请日：2020-07-14

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Won Kyoung Lee ,  Hong-Seok Seo

    IPC: G01N21/65 ,  G01N33/483

    CPC classification number: G01N21/65 ,  G01N33/483 ,  G01N2201/06113

    Abstract: Disclosed is a spectroscopic apparatus includes a laser irradiation device that receives an orthogonal code including a series of bits each having a first value or a second value, generates a control signal having a pulse that has a width shorter than a width of a bit section in the bit section corresponding to a bit having the first value, generates a pulsed laser beam having a pulse width shorter than the bit section using the pulse as a trigger, and irradiates an incident beam including the generated pulsed laser beam to a sample, and a detector that receives a detection signal generated from the sample and the orthogonal code, generates an orthogonal code signal of the same waveform as that of the incident beam, based on the orthogonal code, and demodulates a Raman signal, based on a correlation between the generated orthogonal code signal and the Raman signal.

    Planar waveguide element
    7.
    发明授权
    Planar waveguide element 有权
    平面波导元件

    公开(公告)号：US08942521B2

    公开(公告)日：2015-01-27

    申请号：US13759690

    申请日：2013-02-05

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Jung-Ho Song ,  Hong-Seok Seo ,  Won Seok Han ,  Bong Je Park

    IPC: G02B6/12 ,  G02B6/32 ,  G02B27/10 ,  G02B6/28 ,  G02B6/26 ,  G02B6/42

    CPC classification number: G02B6/32 ,  G02B6/1228 ,  G02B6/30 ,  G02B6/42

    Abstract: Disclosed is a planar waveguide element including a first cylindrical lens disposed based on an z-axis and configured to collimate beams emitted from a plurality of emitters of a laser diode bar; a lens array configured to gather the beam emitted from each emitter via the first cylindrical lens; a plurality of first waveguides existing on an x-y plane by a number of the plurality of emitters and configured to gather at one place via a bending section; a taper configured to connect the lens array and each first waveguide, a width of the taper being narrower from the lens array to the plurality of first waveguide; and a combined waveguide configured to combine the plurality of first waveguides into one.

    Abstract translation: 公开了一种平面波导元件，其包括基于z轴设置的第一柱面透镜，并且被配置为准直从激光二极管条的多个发射极发射的光束; 透镜阵列，被配置为经由所述第一柱面透镜收集从每个发射器发射的光束; 多个第一波导，其存在于多个发射器的数目的x-y平面上，并经配置以经由弯曲部在一个位置聚集; 锥形构造成连接透镜阵列和每个第一波导，锥形的宽度从透镜阵列窄到多个第一波导; 以及组合波导，其被配置为将所述多个第一波导组合成一个。

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