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    Light scanner
    91.
    发明公开
    Light scanner 失效
    Lichtabtaster

    公开(公告)号：EP0751402A1

    公开(公告)日：1997-01-02

    申请号：EP96401427.8

    申请日：1996-06-27

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Yoshida, Masaharu ,  Arakawa, Ken'ichi ,  Tateishi, Kazuyoshi

    IPC: G01S17/08 ,  G01S17/89

    CPC classification number: G02B26/10 ,  G01B11/00 ,  G01S7/4817 ,  G01S7/4911 ,  G01S7/497 ,  G01S17/42

    Abstract: A light beam emitted from an optical source (20) is separated into two light beams by means of a light beam separation means (30), and these light beams are deflected by a mirror (43) vibrated by the electromagnet (41) of the scanner (40). One of the light beams is used for scanning an object to determine its profile, while the other light beam is made incident on a photo detector (50) which outputs a signal based on the incident position of the light beam, in order to determine the deflection angle of the light beam based on vibrations of the mirror (43). Since the angle between the two beams is known, the direction of the beam incident on the object is precisely known.

    Abstract translation: 从光源（20）发射的光束通过光束分离装置（30）分离为两个光束，并且这些光束被由电磁体（41）振动的反射镜（43）偏转， 扫描器（40）。 一个光束用于扫描物体以确定其轮廓，而另一个光束入射到基于光束的入射位置输出信号的光电检测器（50）上，以便确定 基于反射镜（43）的振动的光束的偏转角。 由于两束之间的角度是已知的，所以准确地知道入射到物体上的光束的方向。

    LASER PHASE ESTIMATION AND CORRECTION
    95.
    发明授权
    LASER PHASE ESTIMATION AND CORRECTION 有权

    公开(公告)号：EP3172586B1

    公开(公告)日：2018-09-19

    申请号：EP15747906.4

    申请日：2015-07-24

    Applicant: Dscg Solutions, Inc.

    Inventor： SEBASTIAN, Richard ,  BELSEY, Kendall

    IPC: G01S7/486 ,  G01S7/481 ,  G01S7/489 ,  G01S17/32 ,  G01S17/36 ,  G01S17/58 ,  G01S7/497

    CPC classification number: G01S7/4915 ,  G01S7/4814 ,  G01S7/4911 ,  G01S7/497 ,  G01S17/325 ,  G01S17/36 ,  G01S17/58

    Abstract: In one general aspect, a non-transitory computer-readable storage medium can be configured to store instructions that when executed cause a processor to perform a process. The process can include producing a segment of a laser signal where the segment of the laser signal has a duration, and producing a first reference signal based on the laser signal. The process can include calculating a first phase deviation corresponding with a first portion of the duration based on the first reference signal, and producing a second reference signal based on the laser signal. The process can include calculating a second phase deviation corresponding with a second portion of the duration based on the second reference signal, and calculating a phase deviation of the segment of the laser signal based on a combination of the first phase deviation and the second phase deviation.

    SIGNAL HARMONIC ERROR CANCELLATION METHOD AND APPARATUS
    99.
    发明公开
    SIGNAL HARMONIC ERROR CANCELLATION METHOD AND APPARATUS 审中-公开

    公开(公告)号：EP3129803A4

    公开(公告)日：2017-12-27

    申请号：EP15775931

    申请日：2015-04-08

    Applicant: UNIV OF WAIKATO

    Inventor： DORRINGTON ADRIAN ANDREW ,  STREETER LEE VINCENT

    IPC: G01S7/497 ,  G01S7/491 ,  G01S17/36 ,  G01S17/89

    CPC classification number: G01S7/497 ,  G01S7/4911 ,  G01S7/4915 ,  G01S17/36 ,  G01S17/89

    Abstract: In one aspect the invention provides a time of flight camera system which includes a time of flight transmitter arranged to transmit modulated radiation at a target, and a phase adjustment element configured to adjust the phase of a source modulation signal used to modulate the radiation transmitted at the target. This phase adjustment element provides a set of phase separated output signals, each output signal provided having one of a set phase offsets values applied, where at least one of these phase offset values is the cancellation phase value of another member of the set of phase offset values. The camera system also includes an image sensor modulated with the source modulation signal and configured to measure radiation reflected from a target, and a processor arranged to receive the image sensor measurements and being programmed to resolve range information from the measurements received by the image sensor.

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