ADAPTIVE TRANSMISSION POWER CONTROL FOR A LIDAR
    5.
    发明申请
    ADAPTIVE TRANSMISSION POWER CONTROL FOR A LIDAR 审中-公开
    激光雷达的自适应传输功率控制

    公开(公告)号:WO2018057085A1

    公开(公告)日:2018-03-29

    申请号:PCT/US2017/040648

    申请日:2017-07-05

    Applicant: APPLE INC.

    Abstract: An electro-optical device (20) includes a laser (28), which is configured to emit toward a scene (38) pulses (36) of optical radiation. An array (34) of detectors (79) are configured to receive the optical radiation that is reflected from points in the scene and to output signals indicative of respective times of arrival of the received radiation. A controller (26) is coupled to drive the laser to emit a sequence of pulses of the optical radiation toward each of a plurality of points in the scene and to find respective times of flight for the points responsively to the output signals, while controlling a power of the pulses emitted by the laser by counting a number of the detectors outputting the signals in response to each pulse, and reducing the power of a subsequent pulse in the sequence when the number is greater than a predefined threshold.

    Abstract translation: 电光装置(20)包括激光器(28),该激光器构造成朝向场景(38)发射光辐射的脉冲(36)。 检测器(79)的阵列(34)被配置为接收从场景中的点反射的光辐射并输出指示所接收的辐射的相应到达时间的信号。 控制器(26)被耦合以驱动激光器向场景中的多个点中的每一个发射光学辐射的脉冲序列,并且响应于输出信号找出各个点的飞行时间,同时控制 通过对响应于每个脉冲输出信号的检测器的数量进行计数来激励由激光器发射的脉冲的功率,并且当该数量大于预定义的阈值时减小序列中的后续脉冲的功率。

    GEODETIC INSTRUMENT WITH IMPROVED DYNAMIC RANGE
    6.
    发明申请
    GEODETIC INSTRUMENT WITH IMPROVED DYNAMIC RANGE 审中-公开
    具有改进动态范围的地质仪器

    公开(公告)号:WO2017054863A1

    公开(公告)日:2017-04-06

    申请号:PCT/EP2015/072608

    申请日:2015-09-30

    Applicant: TRIMBLE AB

    Inventor: EKENGREN, Claes

    Abstract: A method for determining a distance to a target by a geodetic instrument is disclosed. The method comprises emitting an optical pulse towards a target at an emission time, applying a bias adjustment to a photodiode that is arranged to receive a return optical pulse reflected at the target, obtaining a reference signal that is indicative of a transient behavior of the photodiode for the bias adjustment, obtaining a difference signal by subtracting, from a signal output from the photodiode, a signal that resembles, or is equal to, the transient behavior of the photodiode in response to the bias adjustment based on the reference signal, extracting a reception time that corresponds to reception of the return optical pulse at the photodiode based at least in part on the difference signal, and determining the distance to the target based on the emission time and the reception time.

    Abstract translation: 公开了一种通过大地测量仪器确定与目标的距离的方法。 该方法包括在发射时间向目标发射光脉冲,向布置成接收在目标反射的返回光脉冲的光电二极管施加偏置调整,获得指示光电二极管的瞬态特性的参考信号 对于偏置调整,通过从光电二极管输出的信号中减去类似于或等于基于参考信号的偏置调整的光电二极管的瞬态特性的信号来获得差信号,提取 接收时间至少部分地基于差分信号对应于光电二极管处的返回光脉冲的接收,并且基于发射时间和接收时间确定到目标​​的距离。

    METHODS AND APPARATUS FOR PERFORMING EXPOSURE ESTIMATION USING A TIME-OF-FLIGHT SENSOR
    7.
    发明申请
    METHODS AND APPARATUS FOR PERFORMING EXPOSURE ESTIMATION USING A TIME-OF-FLIGHT SENSOR 审中-公开
    使用飞行时间传感器执行曝光估算的方法和装置

    公开(公告)号:WO2016209359A1

    公开(公告)日:2016-12-29

    申请号:PCT/US2016/029345

    申请日:2016-04-26

    Abstract: This application relates to capturing an image of a target object using information from a time-of-flight sensor. In one aspect, a method may include a time-of-flight (TOF) system configured to emit light and sense a reflection of the emitted light and may determine a return energy based on the reflection of the emitted light. The method may measure a time between when the light is emitted and when the reflection is sensed and may determine a distance between the target object and the TOF system based on that time. The method may also identify a reflectance of the target object based on the return energy and may determine an exposure level based on a distance between the target object and a reflectance of the target object.

    Abstract translation: 本申请涉及使用来自飞行时间传感器的信息来捕获目标对象的图像。 一方面,一种方法可以包括配置成发射光并感测所发射的光的反射的飞行时间(TOF)系统,并且可以基于发射的光的反射来确定返回能量。 该方法可以测量光发射时和感测反射之间的时间,并且可以基于该时间来确定目标对象和TOF系统之间的距离。 该方法还可以基于返回能量来识别目标对象的反射率,并且可以基于目标对象与目标对象的反射率之间的距离来确定曝光水平。

    光飛行型測距装置およびその方法
    8.
    发明申请
    光飛行型測距装置およびその方法 审中-公开
    飞行距离测量装置及其方法

    公开(公告)号:WO2016072089A1

    公开(公告)日:2016-05-12

    申请号:PCT/JP2015/005511

    申请日:2015-11-03

    CPC classification number: G01S17/10 G01S7/4861 G01S7/4865 G01S7/4868

    Abstract:  光飛行型測距装置(1)は、繰り返し周期を持つパターンで変調された変調光を空間に発光する発光素子(4)と、発光素子を駆動する駆動部(3)と、変調光が対象物で反射した反射光を含む入射光に応じた電荷を複数の蓄積容量(14a,14b)に振り分けて蓄積する受光素子(6)と、受光素子の露光を制御する制御部(5)と、受光素子によりサンプリングされた値を用いて対象物までの距離を計算する信号処理部(11)とを備える。少なくとも1つの高次高調波に感度を有するように受光素子(6)の露光を制御し、基本波の成分と高次高調波の成分とを線形結合して対象物までの距離を計算する。高次高調波の成分を加味する分、基本波の成分のみから距離を計算する場合よりも距離誤差を適切に低減できる。

    Abstract translation: 该飞行时间距离测量装置(1)具有:用于发射到由具有重复循环的图案调制的空间调制光的发光元件(4); 用于驱动发光元件(4)的驱动单元(3); 用于对多个存储电容器(14a,14b)进行分类和存储的感光体元件(6)响应于包括来自物体的调制光的反射产生的反射光的入射光而进行充电; 用于控制感光体元件的曝光的控制单元(5); 以及信号处理单元(11),用于使用由感光体元件采样的值来计算到物体的距离。 控制感光体元件(6)的曝光以对至少一个高次谐波具有灵敏度,并且将基本谐波分量和高次谐波分量线性组合以计算到物体的距离。 通过添加高次谐波分量,与仅从基波谐波分量计算距离相比,距离误差可以适当地减小到相当的程度。

    METHODS AND APPARATUS FOR SUPERPIXEL MODULATION
    9.
    发明申请
    METHODS AND APPARATUS FOR SUPERPIXEL MODULATION 审中-公开
    超滤调制方法与装置

    公开(公告)号:WO2015132726A1

    公开(公告)日:2015-09-11

    申请号:PCT/IB2015/051551

    申请日:2015-03-03

    Applicant: PHOTONEO S.R.O

    Abstract: In illustrative implementations, a set of separate modulation signals simultaneously modulates a plurality of pixels in a superpixel by a set of separate modulation signals, such that each pixel in the superpixel is modulated by a modulation signal that causes sensitivity of the pixel to vary over time. Each superpixel comprises multiple pixels. In some implementations, the sensitivity of a pixel to incident light is controlled by storage modulation or by light modulation. In some implementations, this invention is used for 3D scanning, i.e., for detection of the 3D position of points in a scene.

    Abstract translation: 在说明性实现中,一组单独的调制信号通过一组分离的调制信号同时调制超像素中的多个像素,使得超像素中的每个像素被调制信号调制,调制信号使像素的灵敏度随时间变化 。 每个超像素包括多个像素。 在一些实现中,像素对入射光的灵敏度由存储调制或光调制控制。 在一些实施方案中,本发明用于3D扫描,即用于检测场景中的点的3D位置。

    AMPLIFIED OPTICAL CIRCUIT
    10.
    发明申请
    AMPLIFIED OPTICAL CIRCUIT 审中-公开
    放大光电路

    公开(公告)号:WO2015058209A1

    公开(公告)日:2015-04-23

    申请号:PCT/US2014/061416

    申请日:2014-10-20

    Abstract: An optical circuit can include a bidirectional amplifier connected so as to amplify source light prior to emission through an output device such as a telescope as well as amplification of reflected light received by the telescope. Such an optical circuit can be used in laser doppler velocimeter applications as well as other applications. The optical circuit can also include passive splitters or active switches to provide for advantageous multiplexing.

    Abstract translation: 光电路可以包括双向放大器,其连接以便在通过诸如望远镜的输出装置发射之前放大源光,以及放大由望远镜接收的反射光。 这种光电路可用于激光多普勒测速仪应用以及其它应用中。 光电路还可以包括无源分离器或有源开关以提供有利的多路复用。

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