公开(公告)号：US20130329234A1

公开(公告)日：2013-12-12

申请号：US13985935

申请日：2012-02-21

Applicant: Kenichi Murakami ,  Yusuke Hashimoto

Inventor： Kenichi Murakami ,  Yusuke Hashimoto

IPC: G01B11/02

CPC classification number: G01B11/02 ,  G01S7/4912 ,  G01S7/4915 ,  G01S17/32 ,  G01S17/89

Abstract: The spatial information detection device emits, to a space including an intended area, signal light defined as light modulated with a modulation signal defined as a square wave signal having high and low level periods appearing alternately, each of the periods having its length randomly selected from integral multiples of a unit time period. The device generates signal electric charges by accumulating electric charges generated in response to light from the space in a collection time period determined by a demodulation signal defined as a signal having the same waveform as that of the modulation signal or that of the inverted modulation signal. The device corrects, using correction information regarding an effect caused by light from an unintended area, the amount of signal electric charges as an amount of intended electric charges produced in response to light from the intended area, thereby generating spatial information.

Abstract translation: 空间信息检测装置向包括预期区域的空间发射定义为用​​调​​制信号光调制的信号光，该调制信号被定义为具有交替显示的高电平和低电平周期的方波信号，每个周期的长度随机地从 单位时间的整数倍数。 该装置通过在由被定义为具有与调制信号或反相调制信号相同的波形的信号的解调信号确定的收集时间段内累积响应于来自空间的光产生的电荷而产生信号电荷。 该装置使用关于来自非预期区域的光引起的效果的修正信息，作为响应于来自预期区域的光产生的预期电荷量的信号电荷量，由此产生空间信息来校正。

公开(公告)号：US20120050716A1

公开(公告)日：2012-03-01

申请号：US13203570

申请日：2010-02-26

Applicant: Kenichi Murakami ,  Yusuke Hashimoto

Inventor： Kenichi Murakami ,  Yusuke Hashimoto

IPC: G01C3/08

CPC classification number: G01S17/32 ,  G01S7/48 ,  G01S7/4912 ,  G01S17/89

Abstract: The distance measuring device includes a light source (1), a light-receiving sensor (2), a timing controller (5), a distance calculator (6), and a delay controller (8). The timing controller (5) outputs a modulation signal and plural reference timing signals. The modulation signal is a square wave signal having high and low level periods appearing alternately. Each of the high and low level periods has its length randomly selected from integral multiples of a predetermined unit time period. The reference timing signals include a signal having the same waveform as that of the modulation signal and a signal having the same waveform as that of the inverted modulation signal. The light source (1) varies an intensity of the light in concordance with the modulation signal. The delay controller (8) delays the plural reference timing signals by the delay period (Td) to create plural timing signals respectively. The light-receiving sensor (2) accumulates the electric charges generated within the reception time period, with regard to each of the timing signals. The distance calculator (6) calculates the time difference (τ) from amounts of the electric charges respectively associated with the timing signals, and calculates a distance (L) to the target (3) on the basis of the time difference (τ) and the delay period (Td).

Abstract translation: 测距装置包括光源（1），光接收传感器（2），定时控制器（5），距离计算器（6）和延迟控制器（8）。 定时控制器（5）输出调制信号和多个基准定时信号。 调制信号是交替出现高低电平周期的方波信号。 高电平和低电平周期中的每一个具有从预定单位时间段的整数倍中随机选择的长度。 参考定时信号包括具有与调制信号相同波形的信号和具有与反相调制信号相同波形的信号。 光源（1）根据调制信号改变光的强度。 延迟控制器（8）将多个基准定时信号延迟延迟周期（Td），分别产生多个定时信号。 光接收传感器（2）相对于每个定时信号累积在接收时间段内产生的电荷。 距离计算器（6）根据与定时信号相关联的电荷量计算时差（τ），并且基于时间差（τ）和时间差（τ）计算到目标（3）的距离（L） 延迟时间（Td）。

公开(公告)号：US07834305B2

公开(公告)日：2010-11-16

申请号：US10599615

申请日：2005-07-28

Applicant: Kenichi Hagio ,  Motoo Ikari ,  Yuji Takada ,  Yusuke Hashimoto ,  Fumi Tsunesada

Inventor： Kenichi Hagio ,  Motoo Ikari ,  Yuji Takada ,  Yusuke Hashimoto ,  Fumi Tsunesada

IPC: G01S17/36 ,  H01J40/14

CPC classification number: G01S17/36 ,  G01S17/88 ,  G01S17/89

Abstract: An image processing device for generating both of a distance image and a gray image from an electrical output of a light receiving element on the precondition that a light intensity-modulated at a modulation frequency is irradiated into a target space. This device has an image generator for generating the distance image having pixel values, each of which provides a distance value between an object in the target space and the device, in accordance with a phase difference between the irradiated light and the received light, and the gray image having pixel values, each of which provides a gray value of the object, in accordance with an intensity of the received light. By use of an output of the image generator, an outline of the object can be extracted.

Abstract translation: 一种图像处理装置，用于在将以调制频率被调制的光强度照射到目标空间的前提下，从光接收元件的电输出产生距离图像和灰度图像两者。 该装置具有用于生成具有像素值的距离图像的图像发生器，每个像素值根据照射的光和接收到的光之间的相位差，提供目标空间中的物体与装置之间的距离值， 灰度图像具有根据所接收的光的强度的像素值，每个像素值提供对象的灰度值。 通过使用图像生成器的输出，可以提取对象的轮廓。

公开(公告)号：US20100141927A1

公开(公告)日：2010-06-10

申请号：US12448615

申请日：2007-12-27

Applicant: Yusuke Hashimoto ,  Fumi Tsunesada ,  Kenji Imai ,  Yuji Takada

Inventor： Yusuke Hashimoto ,  Fumi Tsunesada ,  Kenji Imai ,  Yuji Takada

IPC: G01C3/08 ,  H01L27/148 ,  H01L31/09

CPC classification number: H01L27/14887 ,  H01L27/14812

Abstract: A photodetector capable of improving dynamic range for input signals is provided. This photodetector includes a photoelectric converting portion, a charge separating portion, a charge accumulating portion, a barrier electrode formed the charge separating portion and the charge accumulating portion, and a barrier-height adjusting portion electrically connected to the barrier electrode. Undesired electric charges such as generated when environment light is incident on the photoelectric converting portion are removed by the charge separating portion. A potential barrier with an appropriate height is formed under the barrier electrode by applying a voltage to the barrier electrode according to an electric charge amount supplied from the charge separating portion to the barrier-height adjusting portion. Electric charges flowing from the charge separating portion into the charge accumulating portion over the potential barrier are provided as an output of the photodetector.

Abstract translation: 提供能够改善输入信号的动态范围的光检测器。 该光检测器包括光电转换部分，电荷分离部分，电荷累积部分，形成电荷分离部分和电荷累积部分的势垒电极，以及与阻挡电极电连接的势垒高度调节部分。 当环境光入射到光电转换部分时产生的不期望的电荷被电荷分离部分除去。 通过根据从电荷分离部向阻挡高度调节部供给的电荷量向阻挡电极施加电压，在阻挡电极下形成具有适当高度的势垒。 作为光电检测器的输出，提供从电荷分离部分流过势垒上的电荷累积部分的电荷。

公开(公告)号：US07601992B2

公开(公告)日：2009-10-13

申请号：US10563619

申请日：2005-03-17

Applicant: Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara ,  Fumi Tsunesada

Inventor： Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara ,  Fumi Tsunesada

IPC: G02B5/32

CPC classification number: H01L31/103 ,  G01S7/4914 ,  G01S17/36 ,  H01L27/14609 ,  H04N5/335

Abstract: A light detecting element 1 including an element formation layer 22 which contains a well region 31. A surface electrode 25 is formed on the layer 22 through an insulating layer 24. The region 31 contains an electron holding region 32. The region 32 contains a hole holding region 33. The layer 24 contains a control electrode 26 facing the region 33 through the layer 24. Electrons and holes are generated at the layer 22. There are two selected states. In one state, by controlling each electric potential applied to the electrodes 25, 26, electrons are gathered at the region 32, while holes are held at the region 33. In another state, recombination is stimulated between the electrons and the holes. After the recombination, the remaining electrons are picked out as received light output.

Abstract translation: 光检测元件1，其包括含有阱区31的元件形成层22.表面电极25通过绝缘层24形成在层22上。区域31包含电子保持区32.区域32包含孔 层24包含面向通过层24的区域33的控制电极26.在层22处产生电子和空穴。存在两种选择的状态。 在一个状态下，通过控制施加到电极25,26的每个电位，电子在区域32处聚集，而空穴被保持在区域33处。在另一个状态下，在电子和空穴之间激发复合。 复合后，剩余的电子被选出作为接收光输出。

公开(公告)号：US20090045359A1

公开(公告)日：2009-02-19

申请号：US12096019

申请日：2007-10-10

Applicant: Minoru Kumahara ,  Yusuke Hashimoto ,  Shinji Sakamoto ,  Yuji Takada

Inventor： Minoru Kumahara ,  Yusuke Hashimoto ,  Shinji Sakamoto ,  Yuji Takada

IPC: G01N21/84

CPC classification number: G01S17/36 ,  G01S7/4913 ,  G01S7/4915 ,  G01S7/493 ,  G01S7/497 ,  G01S17/89

Abstract: In an apparatus using an intensity-modulated light for detection of spatial information based upon light intensity of light reflected from a target space, a timing synchronization circuit is provided to synchronize a phase of the intensity-modulated light from a light-emitting element with a timing of operating a light-receiving element receiving the intensity-modulated light. The light-receiving element is caused to operate for enabling the detection of intensity of the received light for each of a plurality of phase regions within one cycle of the intensity-modulated light. The timing synchronization circuit functions to compare a cyclic variation determining the operation of the light-receiving element with a cyclic variation associated with an output from a light-emitting element driving circuit in order to keep a constant phase difference between these two cyclic variations.

Abstract translation: 在使用强度调制光用于基于从目标空间反射的光的光强度来检测空间信息的装置中，提供定时同步电路以使来自发光元件的强度调制光的相位与 操作接收强度调制光的光接收元件的定时。 导致光接收元件操作，以便能够在强度调制光的一个周期内检测多个相位区域中的每一个的接收光的强度。 定时同步电路用于将确定光接收元件的操作的循环变化与与发光元件驱动电路的输出相关联的循环变化进行比较，以便在这两个循环变化之间保持恒定的相位差。

公开(公告)号：US20070237363A1

公开(公告)日：2007-10-11

申请号：US10599615

申请日：2005-07-28

Applicant: Kenichi Hagio ,  Motoo Ikari ,  Yuji Takada ,  Yusuke Hashimoto ,  Fumi Tsunesada

Inventor： Kenichi Hagio ,  Motoo Ikari ,  Yuji Takada ,  Yusuke Hashimoto ,  Fumi Tsunesada

IPC: G01S17/36

CPC classification number: G01S17/36 ,  G01S17/88 ,  G01S17/89

Abstract: An image processing device for generating both of a distance image and a gray image from an electrical output of a light receiving element on the precondition that a light intensity-modulated at a modulation frequency is irradiated into a target space. This device has an image generator for generating the distance image having pixel values, each of which provides a distance value between an object in the target space and the device, in accordance with a phase difference between the irradiated light and the received light, and the gray image having pixel values, each of which provides a gray value of the object, in accordance with an intensity of the received light. By use of an output of the image generator, an outline of the object can be extracted.

Abstract translation: 一种图像处理装置，用于在将以调制频率被调制的光强度照射到目标空间的前提下，从光接收元件的电输出产生距离图像和灰度图像两者。 该装置具有用于生成具有像素值的距离图像的图像发生器，每个像素值根据照射的光和接收到的光之间的相位差，提供目标空间中的物体与装置之间的距离值， 灰度图像具有根据所接收的光的强度的像素值，每个像素值提供对象的灰度值。 通过使用图像生成器的输出，可以提取对象的轮廓。

公开(公告)号：US07034274B2

公开(公告)日：2006-04-25

申请号：US10455431

申请日：2003-06-06

Applicant: Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara

Inventor： Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara

IPC: H01L27/14

CPC classification number: H04N5/335 ,  G01S17/06

Abstract: A light receiving device using a new method of controlling sensitivity and a spatial information detecting apparatus using the same technical concept are provided. This light receiving device comprises a photoelectric converter for receiving a light at a light receiving surface and generating amounts of electric charges corresponding to an intensity of received light; electrodes formed on the photoelectric converter; a charge collection area induced in the photoelectric converter by applying a control voltage to the electrodes to collect at least part of the electric charges generated in the photoelectric converter; a charge ejector for outputting the electric charges from the charge collection area; and a sensitivity controller for controlling the number of the electrodes, to which the control voltage is applied, to change size of the charge collection area in the light receiving surface of the photoelectric converter. As compared with conventional ones, this light receiving device is of a relatively simple structure with an increased aperture ratio and excellent in S/N ratio.

Abstract translation: 提供一种使用具有相同技术概念的控制灵敏度的新方法的光接收装置和空间信息检测装置。 该光接收装置包括用于在光接收表面处接收光并产生与接收光的强度相对应的电荷量的光电转换器; 在光电转换器上形成的电极; 通过向所述电极施加控制电压以收集所述光电转换器中产生的电荷的至少一部分而在所述光电转换器中感应的电荷收集区域; 用于从所述电荷收集区输出电荷的充电喷射器; 以及用于控制施加了控制电压的电极的数量以改变光电转换器的光接收表面中的电荷收集区域的尺寸的灵敏度控制器。 与传统的光接收装置相比，这种光接收装置具有相对简单的结构，孔径比增加，S / N比优异。

公开(公告)号：US20050145773A1

公开(公告)日：2005-07-07

申请号：US10507516

申请日：2003-04-07

Applicant: Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara

Inventor： Yusuke Hashimoto ,  Yuji Takada ,  Fumikazu Kurihara

IPC: H01L27/146 ,  G01S7/493 ,  G01S17/36 ,  G01S17/89 ,  H01L27/148 ,  H01L31/02 ,  H01L31/103 ,  H03D9/00 ,  H04N5/30 ,  H04N5/335 ,  H04N5/369 ,  H04N5/372 ,  G01J1/20

CPC classification number: H01L31/02024 ,  G01S7/4914 ,  G01S7/493 ,  G01S17/36 ,  H01L27/14603 ,  H01L27/14812 ,  H01L31/103 ,  H03D9/00

Abstract: A spatial information detecting device using an intensity-modulated light is provided. This device comprises a photoelectric converter for receiving a light from a space into which a light intensity-modulated at a predetermined emission frequency is being irradiated, and generating an electrical output corresponding to an intensity of received light; a local oscillator circuit for outputting a local oscillator signal having a local oscillator frequency different from the emission frequency; a sensitivity controller for mixing the local oscillator signal with the electrical output to frequency convert the electrical output into a beat signal having a lower frequency than the emission frequency; an integrator for performing integration of said beat signal at a predetermined timing; and an analyzer for detecting information concerning the space according to an output of the integrator. According to this device, it is possible to accurately detect the spatial information without using a switching element having high-speed response at the light receiving side.

Abstract translation: 提供了使用强度调制光的空间信息检测装置。 该装置包括光电转换器，用于接收来自照射预定发射频率的光强调制的空间的光，并产生对应于接收光强度的电输出; 用于输出具有与发射频率不同的本地振荡器频率的本地振荡器信号的本地振荡器电路; 用于将本机振荡器信号与电输出混合的灵敏度控制器，以将电输出频率转换成具有比发射频率低的频率的差拍信号; 用于在预定定时执行所述拍频信号的集成的积分器; 以及分析器，用于根据积分器的输出来检测与空间有关的信息。 根据该装置，能够在光接收侧不使用具有高速响应的开关元件来精确地检测空间信息。

公开(公告)号：US08699008B2

公开(公告)日：2014-04-15

申请号：US13203570

申请日：2010-02-26

Applicant: Kenichi Murakami ,  Yusuke Hashimoto

Inventor： Kenichi Murakami ,  Yusuke Hashimoto

IPC: G01C3/08

CPC classification number: G01S17/32 ,  G01S7/48 ,  G01S7/4912 ,  G01S17/89

Abstract: The distance measuring device includes a light source (1), a light-receiving sensor (2), a timing controller (5), a distance calculator (6), and a delay controller (8). The timing controller (5) outputs a modulation signal and plural reference timing signals. The modulation signal is a square wave signal having high and low level periods appearing alternately. Each of the high and low level periods has its length randomly selected from integral multiples of a predetermined unit time period. The reference timing signals include a signal having the same waveform as that of the modulation signal and a signal having the same waveform as that of the inverted modulation signal. The light source (1) varies an intensity of the light in concordance with the modulation signal. The delay controller (8) delays the plural reference timing signals by the delay period (Td) to create plural timing signals respectively. The light-receiving sensor (2) accumulates the electric charges generated within the reception time period, with regard to each of the timing signals. The distance calculator (6) calculates the time difference (τ) from amounts of the electric charges respectively associated with the timing signals, and calculates a distance (L) to the target (3) on the basis of the time difference (τ) and the delay period (Td).

Abstract translation: 测距装置包括光源（1），光接收传感器（2），定时控制器（5），距离计算器（6）和延迟控制器（8）。 定时控制器（5）输出调制信号和多个基准定时信号。 调制信号是交替出现高低电平周期的方波信号。 高电平和低电平周期中的每一个具有从预定单位时间段的整数倍中随机选择的长度。 参考定时信号包括具有与调制信号相同波形的信号和具有与反相调制信号相同波形的信号。 光源（1）根据调制信号改变光的强度。 延迟控制器（8）将多个基准定时信号延迟延迟周期（Td），分别产生多个定时信号。 光接收传感器（2）相对于每个定时信号累积在接收时间段内产生的电荷。 距离计算器（6）根据与定时信号相关联的电荷量计算时差（τ），并且基于时间差（τ）和时间差（τ）计算到目标（3）的距离（L） 延迟时间（Td）。