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1.发明申请Light receiving device with controllable sensitivity and spatial information detecting apparatus using the same 有权具有可控灵敏度的光接收装置和使用其的空间信息检测装置公开(公告)号：US20050178946A1
公开(公告)日：2005-08-18
申请号：US10510216
申请日：2003-07-14
CPC分类号： G01S7/493 , G01S7/4914 , G01S17/36 , H01L27/14806 , H01L27/14831 , H04N5/3597
摘要： A spatial information detecting apparatus using an intensity-modulated light has a photoelectric converter for receiving a light provided from a space, into which a light intensity-modulated by a predetermined modulation signal is being irradiated, and generating amounts of electric charges corresponding to an intensity of received light; charge discarding portion having an electrode for removing dispensable charges from the electric charges generated by the photoelectric converter according to a voltage applied to the electrode; charge storage portion for storing signal charges from the electric charges generated by the photoelectric converter; control circuit for controlling the voltage applied to the electrode at a timing synchronized with a period of the modulation signal to change a ratio of the signal charges stored in the charge storage portion to the electric charges generated by the photoelectric converter; charge ejector for outputting the signal charges from the charge storage portion; and an analyzer for determining spatial information from an output of the charge ejector. According to this apparatus, since the dispensable charges are previously removed from the electric charges generated by the photoelectric converter by the charge discarding portion, it is possible to improve S/N ratio and accurately determine the spatial information.
摘要翻译： 使用强度调制光的空间信息检测装置具有光电转换器，用于接收由照射由预定调制信号调制的光的空间提供的光，并产生与强度对应的电荷量 收到光; 具有用于根据施加到所述电极的电压从所述光电转换器产生的电荷中去除可分配电荷的电极的放电部分; 电荷存储部分，用于存储由光电转换器产生的电荷的信号电荷; 控制电路，用于在与调制信号的周期同步的定时控制施加到电极的电压，以将存储在电荷存储部分中的信号电荷的比率改变为由光电转换器产生的电荷; 电荷喷射器，用于从电荷存储部分输出信号电荷; 以及用于从所述电荷喷射器的输出确定空间信息的分析器。 根据该装置，由于通过电荷丢弃部分预先从光电转换器产生的电荷中去除了可分配的电荷，所以可以提高S / N比并精确地确定空间信息。
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2.发明授权Spatial information detection system including a plurality of detection devices with nonoverlapping light projection periods 有权空间信息检测系统，包括具有非重叠光投影周期的多个检测装置公开(公告)号：US07718938B2
公开(公告)日：2010-05-18
申请号：US11918745
申请日：2006-04-17
IPC分类号： G01B11/14
CPC分类号： G01V8/20 , G01S7/4918 , G01S17/36 , G01S17/87 , G01S17/89
摘要： A spatial information detection system, which is capable of, even when detecting spatial information from a common target space by use of a plurality of detection devices, achieving accurate detection without causing interference between the detection devices. Each of the detection devices has a light emitting source for projecting light intensity-modulated with a modulation period into the target space, a photodetector for receiving light from the target space, and an evaluation portion for detecting the spatial information of the target space from a change between the light projected from the light emitting source and the light received by the photodetector. The system includes a timing control portion for controlling the timings of projecting the lights from the light emitting sources such that a light projection period of the light emitting source of one of the detection devices does not overlap with the light projection period of the light emitting source of another detection device.
摘要翻译： 即使通过使用多个检测装置从公共目标空间检测空间信息也能够实现准确的检测而不引起检测装置之间的干扰的空间信息检测系统。 每个检测装置具有用于将调制周期强度调制的光投射到目标空间中的发光源，用于从目标空间接收光的光检测器，以及用于从目标空间中检测目标空间的空间信息的评估部 在从发光源投射的光与由光电检测器接收的光之间变化。 该系统包括定时控制部分，用于控制从发光源投射光的定时，使得一个检测装置的发光源的光投射周期与发光源的光投射周期不重叠 的另一个检测装置。
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3.发明授权Spatial information detecting device using intensity-modulated light and a beat signal 有权使用强度调制光和拍频信号的空间信息检测装置公开(公告)号：US07119350B2
公开(公告)日：2006-10-10
申请号：US10507516
申请日：2003-04-07
申请人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
发明人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
IPC分类号： G01N21/86
CPC分类号： H01L31/02024 , G01S7/4914 , G01S7/493 , G01S17/36 , H01L27/14603 , H01L27/14812 , H01L31/103 , H03D9/00
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20070057209A1
公开(公告)日：2007-03-15
申请号：US10573573
申请日：2005-09-16
CPC分类号： H01L27/14601 , G01S7/4914 , G01S7/4918 , G01S7/493 , G01S17/36 , G01S17/89 , H01L27/14603 , H01L27/14643 , H01L27/14806
摘要： A range image sensor comprising a light source, a light detecting element, a sensor control stage and an image construction stage. The image construction stage calculates a distance value for each image element in a range image based on each electric charge picked up after a specific detection period of different detection periods by the sensor control stage, and then constructs the range image. The specific detection period is one of one or more detection periods during which the light detecting element does not reach saturation, and is one detection period during which a value related to the quantity of light received from the object space becomes maximum of that of the one or more detection periods.
摘要翻译： 一种范围图像传感器，包括光源，光检测元件，传感器控制级和图像构造级。 图像构造级基于通过传感器控制级在不同的检测周期的特定检测周期之后拾取的每个电荷来计算范围图像中的每个图像元素的距离值，然后构建范围图像。 特定检测周期是光检测元件未达到饱和的一个以上的检测期间之一，并且是与从对象空间接收的光量相关的值变得最大的一个检测期间 或更多的检测周期。
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公开(公告)号：US07601992B2
公开(公告)日：2009-10-13
申请号：US10563619
申请日：2005-03-17
IPC分类号： G02B5/32
CPC分类号： H01L31/103 , G01S7/4914 , G01S17/36 , H01L27/14609 , H04N5/335
摘要： 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.
摘要翻译： 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。
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6.发明授权Light receiving device with controllable sensitivity and spatial information detecting apparatus using the same 有权具有可控灵敏度的光接收装置和使用其的空间信息检测装置公开(公告)号：US07034274B2
公开(公告)日：2006-04-25
申请号：US10455431
申请日：2003-06-06
申请人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
发明人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
IPC分类号： H01L27/14
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20050145773A1
公开(公告)日：2005-07-07
申请号：US10507516
申请日：2003-04-07
申请人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
发明人： Yusuke Hashimoto , Yuji Takada , Fumikazu Kurihara
IPC分类号： 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分类号： H01L31/02024 , G01S7/4914 , G01S7/493 , G01S17/36 , H01L27/14603 , H01L27/14812 , H01L31/103 , H03D9/00
摘要： 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.
摘要翻译： 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。
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8.发明授权Spatial information detection device and spatial information detection system using the same 有权空间信息检测装置和空间信息检测系统使用相同公开(公告)号：US07643131B2
公开(公告)日：2010-01-05
申请号：US11919746
申请日：2006-05-01
IPC分类号： G01C3/08
CPC分类号： H04N5/2354 , G01S17/36 , G01S17/89
摘要： A spatial information detection device is provided, which is capable of, even under the condition that an environmental light having intensity fluctuations exists in a target space, projecting a light intensity-modulated with a predetermined modulation signal from a light emitting source into the target space, receiving light from the target space with a photodetector, and detecting spatial information of the target space from a change between the light projected from the light emitting source and the light received by the photodetector. This device has a smoothing unit configured to integrate, over a predetermined integration period, a fluctuation component in a prescribed phase zone of the modulation signal with respect to an electric charge amount generated by receiving the environmental light in the electric charge amount generated at the photodetector by receiving the light from the target space, thereby smoothing the fluctuation component.
摘要翻译： 提供了一种空间信息检测装置，其能够即使在目标空间中存在具有强度波动的环境光的情况下，将来自发光源的预定调制信号的强度调制光投射到目标空间中 利用光电检测器从目标空间接收光，并且根据从发光源投射的光与由光电检测器接收的光之间的变化来检测目标空间的空间信息。 该装置具有平滑单元，被配置为在预定的积分期间内，将调制信号的规定相位区域中的波动成分相对于通过在光电检测器处产生的电荷量接收环境光而产生的电荷量积分 通过从目标空间接收光，从而平滑波动分量。
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9.发明申请Spatial information detection device and spatial information detection system using the same 有权空间信息检测装置和空间信息检测系统使用相同公开(公告)号：US20090079955A1
公开(公告)日：2009-03-26
申请号：US11919746
申请日：2006-05-01
IPC分类号： G01C3/08
CPC分类号： H04N5/2354 , G01S17/36 , G01S17/89
摘要： A spatial information detection device is provided, which is capable of, even under the condition that an environmental light having intensity fluctuations exists in a target space, projecting a light intensity-modulated with a predetermined modulation signal from a light emitting source into the target space, receiving light from the target space with a photodetector, and detecting spatial information of the target space from a change between the light projected from the light emitting source and the light received by the photodetector. This device has a smoothing unit configured to integrate, over a predetermined integration period, a fluctuation component in a prescribed phase zone of the modulation signal with respect to an electric charge amount generated by receiving the environmental light in the electric charge amount generated at the photodetector by receiving the light from the target space, thereby smoothing the fluctuation component.
摘要翻译： 提供了一种空间信息检测装置，其能够即使在目标空间中存在具有强度波动的环境光的情况下，将来自发光源的预定调制信号的强度调制光投射到目标空间中 利用光电检测器从目标空间接收光，并且根据从发光源投射的光与由光电检测器接收的光之间的变化来检测目标空间的空间信息。 该装置具有平滑单元，被配置为在预定的积分期间内，将调制信号的规定相位区域中的波动成分相对于通过在光电检测器处产生的电荷量接收环境光而产生的电荷量积分 通过从目标空间接收光，从而平滑波动分量。
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公开(公告)号：US20090072170A1
公开(公告)日：2009-03-19
申请号：US11918745
申请日：2006-04-17
CPC分类号： G01V8/20 , G01S7/4918 , G01S17/36 , G01S17/87 , G01S17/89
摘要： A spatial information detection system is provided, which is capable of, even when detecting spatial information from a common target space by use of a plurality of detection devices, achieving accurate detection without causing interference between the detection devices. Each of the detection devices has a light emitting source for projecting light intensity-modulated with a modulation period into the target space, a photodetector for receiving light from the target space, and an evaluation portion for detecting the spatial information of the target space from a change between the light projected from the light emitting source and the light received by the photodetector. The system comprises a timing control portion for controlling the timings of projecting the lights from the light emitting sources such that a light projection period of the light emitting source of one of the detection devices does not overlap with the light projection period of the light emitting source of another detection device.
摘要翻译： 提供了一种空间信息检测系统，其能够即使在通过使用多个检测装置检测来自公共目标空间的空间信息的情况下也能够实现准确的检测而不会引起检测装置之间的干扰。 每个检测装置具有用于将调制周期强度调制的光投射到目标空间中的发光源，用于从目标空间接收光的光检测器，以及用于从目标空间中检测目标空间的空间信息的评估部 在从发光源投射的光与由光电检测器接收的光之间变化。 该系统包括定时控制部分，用于控制从发光源投射光的定时，使得一个检测装置的发光源的光投射周期与发光源的光投射周期不重叠 的另一个检测装置。
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