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公开(公告)号：US07773277B2
公开(公告)日：2010-08-10
申请号：US12047038
申请日：2008-03-12
申请人： Atsushi Yamaguchi , Masato Yamada , Yoshiaki Maeno
发明人： Atsushi Yamaguchi , Masato Yamada , Yoshiaki Maeno
IPC分类号： G02B26/08
CPC分类号： G01S7/4811 , G01S7/4816 , G01S7/4817 , G01S7/491 , G01S17/48 , G01S17/936 , G02B26/0875 , G02B26/101
摘要： A light refracting element formed in parallel plate shape is attached to a support shaft of a mirror holder, a semiconductor laser and a PSD are disposed at positions between which the light refracting element is sandwiched. The light refracting element is rotated by rotation of the mirror holder, and whereby a laser beam irradiation position is changed on a light acceptance surface of PSD. The laser beam irradiation position on a light acceptance surface corresponds to the mirror rotation position, so that the mirror rotation position and a laser beam scanning position in a target area can be detected based on an output from the PSD.
摘要翻译： 形成为平行板状的光折射元件被安装在镜保持器的支撑轴上，半导体激光器和PSD被设置在夹着光折射元件的位置。 光折射元件通过镜保持器的旋转而旋转，并且由此在PSD的光接收表面上改变激光束照射位置。 光接收表面上的激光束照射位置对应于反射镜旋转位置，从而可以基于PSD的输出来检测目标区域中的反射镜旋转位置和激光束扫描位置。
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公开(公告)号：US07864304B2
公开(公告)日：2011-01-04
申请号：US12367208
申请日：2009-02-06
申请人： Masato Yamada , Atsushi Yamaguchi , Yoshiaki Maeno
发明人： Masato Yamada , Atsushi Yamaguchi , Yoshiaki Maeno
IPC分类号： G01C3/08
CPC分类号： G01S3/784 , G01S7/4813 , G01S7/4817 , G01S7/499 , G01S17/46
摘要： A beam irradiation device includes: a first light source for emitting laser light; an actuator for moving a scanning section for receiving the laser light to scan a target area with the laser light; a second light source movable with the scanning section and adapted for emitting diffused light; a light receiving position detecting device for receiving the diffused light to output a signal depending on a position of receiving the diffused light; and a light projecting element, disposed at a position closer to the light receiving position detecting device with respect to an intermediate position between the second light source and the light receiving position detecting device, for projecting an emission position to be defined by the second light source on the light receiving position detecting device via a predetermined projection area.
摘要翻译： 光束照射装置包括：用于发射激光的第一光源; 用于移动用于接收激光的扫描部分以用激光扫描目标区域的致动器; 第二光源，其可与扫描部分一起移动并适于发射漫射光; 光接收位置检测装置，用于接收漫射光以根据接收漫射光的位置输出信号; 以及投光元件，其设置在相对于所述第二光源和所述受光位置检测装置之间的中间位置的靠近所述受光位置检测装置的位置，用于投射由所述第二光源 经由预定投影区域在光接收位置检测装置上。
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公开(公告)号：US20090201488A1
公开(公告)日：2009-08-13
申请号：US12367208
申请日：2009-02-06
申请人： Masato Yamada , Atsushi Yamaguchi , Yoshiaki Maeno
发明人： Masato Yamada , Atsushi Yamaguchi , Yoshiaki Maeno
CPC分类号： G01S3/784 , G01S7/4813 , G01S7/4817 , G01S7/499 , G01S17/46
摘要： A beam irradiation device includes: a first light source for emitting laser light; an actuator for moving a scanning section for receiving the laser light to scan a target area with the laser light; a second light source movable with the scanning section and adapted for emitting diffused light; a light receiving position detecting device for receiving the diffused light to output a signal depending on a position of receiving the diffused light; and a light projecting element, disposed at a position closer to the light receiving position detecting device with respect to an intermediate position between the second light source and the light receiving position detecting device, for projecting an emission position to be defined by the second light source on the light receiving position detecting device via a predetermined projection area.
摘要翻译： 光束照射装置包括：用于发射激光的第一光源; 用于移动用于接收激光的扫描部分以用激光扫描目标区域的致动器; 第二光源，其可与扫描部分一起移动并适于发射漫射光; 光接收位置检测装置，用于接收漫射光以根据接收漫射光的位置输出信号; 以及投光元件，其设置在相对于所述第二光源和所述受光位置检测装置之间的中间位置的靠近所述受光位置检测装置的位置，用于投射由所述第二光源 经由预定投影区域在光接收位置检测装置上。
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公开(公告)号：US07773281B2
公开(公告)日：2010-08-10
申请号：US12496334
申请日：2009-07-01
申请人： Yoshiaki Maeno , Atsushi Yamaguchi
发明人： Yoshiaki Maeno , Atsushi Yamaguchi
IPC分类号： G02B26/08
CPC分类号： G02B26/085 , G02B26/0875 , G02B26/105
摘要： A beam irradiation apparatus includes: an optical element which changes a travel direction of a laser beam by being rotated in a predetermined direction; an actuator which rotates the optical element in the direction; a refractive element which is disposed in the actuator and rotates in association with rotation of the optical element; a servo beam source which emits a servo beam to the refractive element; a photodetector which receives the servo beam refracted by the refractive element and outputs a signal according to a position where the servo beam is received; and a power adjustment circuit which adjusts emission power of the servo beam source. The power adjustment circuit adjusts the emission power so that a reception amount of the servo beam in the photodetector becomes constant based on an output signal from the photodetector.
摘要翻译： 光束照射装置包括：光学元件，其通过沿预定方向旋转来改变激光束的行进方向; 沿该方向旋转光学元件的致动器; 折射元件，设置在致动器中并与光学元件的旋转相关联地旋转; 将伺服光束发射到折射元件的伺服光束源; 接收由折射元件折射的伺服光束并根据接收伺服光束的位置输出信号的光电检测器; 以及调整伺服光束源的发射功率的功率调节电路。 功率调整电路基于来自光电检测器的输出信号来调整发光功率，使得光电检测器中的伺服光束的接收量变得恒定。
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公开(公告)号：US20100188648A1
公开(公告)日：2010-07-29
申请号：US12695497
申请日：2010-01-28
CPC分类号： G01J1/4257 , G01S7/4811 , G01S7/4817 , G01S17/026 , G01S17/10 , G01S17/42 , G01S17/936
摘要： A beam irradiation device includes: a laser light source for emitting laser light; an actuator which scans a targeted area with the laser light; a servo optical system which changes a propagating direction of servo light in response to driving of the actuator; a photodetector which receives the servo light to output a signal depending on a light receiving position of the servo light; an actuator controlling section which controls the actuator based on the signal to be outputted from the photodetector; and a laser controlling section which controls the laser light source based on the signal to be outputted from the photodetector. The laser controlling section controls the laser light source to emit the laser light in a pulse manner at a timing when the light receiving position of the servo light coincides with a predetermined targeted position.
摘要翻译： 光束照射装置包括：用于发射激光的激光源; 用激光扫描目标区域的致动器; 伺服光学系统，其响应于致动器的驱动而改变伺服光的传播方向; 接收所述伺服光以根据所述伺服光的光接收位置输出信号的光电检测器; 致动器控制部，其基于从所述光检测器输出的信号来控制所述致动器; 以及激光控制部，其基于从光电检测器输出的信号来控制激光光源。 在伺服光的光接收位置与预定目标位置一致的时刻，激光控制部分控制激光光源以脉冲方式发射激光。
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公开(公告)号：US20100078582A1
公开(公告)日：2010-04-01
申请号：US12558181
申请日：2009-09-11
申请人： Yoshiaki Maeno , Atsushi Yamaguchi
发明人： Yoshiaki Maeno , Atsushi Yamaguchi
IPC分类号： H01J40/00
CPC分类号： G01S7/481 , G01S7/4817 , G01S17/42 , G01S17/936
摘要： A beam irradiation device includes an actuator that scans a target region with laser light in a two-dimensional direction, and a servo optical system that changes a traveling direction of servo light along with driving of the actuator. The servo optical system includes a splitting element that splits the servo light, a first position sensing device that receives a first beam split by the splitting element and outputs a signal at a light-receiving position in a first direction, and a second position sensing device that receives a second beam split by the splitting element and outputs a signal at a light-receiving position in a second direction different from the first direction.
摘要翻译： 光束照射装置包括利用二维方向的激光扫描目标区域的致动器，以及随着致动器的驱动而改变伺服光的行进方向的伺服光学系统。 所述伺服光学系统包括分割所述伺服光的分离元件，第一位置检测装置，其接收由所述分离元件分割的第一光束并在第一方向的光接收位置输出信号;以及第二位置感测装置 其接收由分离元件分割的第二光束，并且在不同于第一方向的第二方向上在光接收位置处输出信号。
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公开(公告)号：US20100014139A1
公开(公告)日：2010-01-21
申请号：US12500407
申请日：2009-07-09
申请人： Yoshiaki Maeno , Atsushi Yamaguchi
发明人： Yoshiaki Maeno , Atsushi Yamaguchi
IPC分类号： G02B26/10
CPC分类号： G02B26/101 , G01S7/4816 , G01S7/4817 , G01S17/026 , G01S17/42
摘要： A beam irradiation apparatus includes: an actuator which scans a target region with a laser beam; a photodetector which receives a servo beam and outputs a signal according to a beam reception position; an optical unit which makes the servo beam displaced on the photodetector in association with driving of the actuator; and a position signal generation circuit that generates a signal according to the reception position of the servo beam based on an output signal from the photodetector. The position signal generation circuit has a signal removal circuit that removes a disturbance signal generated when the laser beam is incident on the photodetector, from an output signal of the photodetector.
摘要翻译： 光束照射装置包括：用激光束扫描目标区域的致动器; 接收伺服光束并根据光束接收位置输出信号的光电检测器; 光学单元，其使伺服光束与致动器的驱动相关联地在光电检测器上移位; 以及位置信号生成电路，其基于来自所述光检测器的输出信号，根据所述伺服光束的接收位置生成信号。 位置信号发生电路具有信号去除电路，该信号去除电路根据光检测器的输出信号去除激光束入射到光检测器上时产生的干扰信号。
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公开(公告)号：US08345268B2
公开(公告)日：2013-01-01
申请号：US12907828
申请日：2010-10-19
IPC分类号： G01B11/14
CPC分类号： G01B11/026 , G01S7/4814 , G01S7/497 , G01S17/42
摘要： A beam irradiation device includes a photodetector which receives servo light and outputs a detection signal depending on a light receiving position of the servo light, and a signal processing section which obtains the light receiving position based on the detection signal. In the above arrangement, the signal processing section has an A/D conversion circuit which converts the detection signal into a digital signal, and an error signal adjusting circuit which converts an error component signal to be outputted from the photodetector when the photodetector is not irradiated by the servo light, into a signal within a processable range of the A/D conversion circuit, and supplies the converted signal to the A/D conversion circuit. A first digital signal derived from the detection signal is corrected with a second digital signal derived from the error component signal.
摘要翻译： 光束照射装置包括：光电检测器，其接收伺服光并根据伺服光的光接收位置输出检测信号;以及信号处理部，其基于检测信号获得光接收位置。 在上述结构中，信号处理部分具有将检测信号转换为数字信号的A / D转换电路和误差信号调节电路，当光电检测器未被照射时，将误差分量信号转换成从光电检测器输出的误差分量信号 通过伺服光进入A / D转换电路的可处理范围内的信号，并将转换的信号提供给A / D转换电路。 从检测信号导出的第一数字信号用从误差分量信号导出的第二数字信号来校正。
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公开(公告)号：US20110090516A1
公开(公告)日：2011-04-21
申请号：US12907828
申请日：2010-10-19
IPC分类号： G01B11/14
CPC分类号： G01B11/026 , G01S7/4814 , G01S7/497 , G01S17/42
摘要： A beam irradiation device includes a photodetector which receives servo light and outputs a detection signal depending on a light receiving position of the servo light, and a signal processing section which obtains the light receiving position based on the detection signal. In the above arrangement, the signal processing section has an A/D conversion circuit which converts the detection signal into a digital signal, and an error signal adjusting circuit which converts an error component signal to be outputted from the photodetector when the photodetector is not irradiated by the servo light, into a signal within a processable range of the A/D conversion circuit, and supplies the converted signal to the A/D conversion circuit. A first digital signal derived from the detection signal is corrected with a second digital signal derived from the error component signal.
摘要翻译： 光束照射装置包括：光电检测器，其接收伺服光并根据伺服光的光接收位置输出检测信号;以及信号处理部，其基于检测信号获得光接收位置。 在上述结构中，信号处理部分具有将检测信号转换为数字信号的A / D转换电路和误差信号调节电路，当光电检测器未被照射时，将误差分量信号转换成从光电检测器输出的误差分量信号 通过伺服光进入A / D转换电路的可处理范围内的信号，并将转换的信号提供给A / D转换电路。 从检测信号导出的第一数字信号用从误差分量信号导出的第二数字信号来校正。
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公开(公告)号：US20090051997A1
公开(公告)日：2009-02-26
申请号：US12130533
申请日：2008-05-30
IPC分类号： G02B26/10
CPC分类号： G02B27/0031 , G01S7/4817 , G01S17/42 , G01S17/936
摘要： A laser radar according to an embodiment of the invention includes a beam irradiation head which emits a laser beam and a control circuit which controls the beam irradiation head to perform scan in a two-dimensional direction with the laser beam. In the laser radar, the beam irradiation head includes a laser beam source; a mirror to which the laser beam emitted from the laser beam source is incident; and a driving mechanism which rotates the mirror in first and second directions about a first rotating axis and a second rotating axis perpendicular to the first rotating axis respectively. The control circuit controls the rotation of the mirror in the first direction and the second direction such that a scan region of the laser beam becomes a rectangular shape.
摘要翻译： 根据本发明的实施例的激光雷达包括发射激光束的光束照射头和控制光束照射头以与激光束沿二维方向进行扫描的控制电路。 在激光雷达中，束照射头包括激光束源; 从激光束源发射的激光束入射的反射镜; 以及驱动机构，其使第一和第二方向的反射镜绕第一旋转轴线和与第一旋转轴线垂直的第二旋转轴线旋转。 控制电路控制反射镜在第一方向和第二方向上的旋转，使得激光束的扫描区域成为矩形。
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