公开(公告)号：US20100042362A1

公开(公告)日：2010-02-18

申请号：US12604846

申请日：2009-10-23

申请人： Marc Levesque ,  Francois Babin ,  Daniel Cantin

发明人： Marc Levesque ,  Francois Babin ,  Daniel Cantin

IPC分类号： G01B11/14 ,  G06F15/00

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

摘要翻译： 减少响应时间的方法和装置以及随着光学测距仪测距的可能性的增加，数字化从从不同类型的物体返回的脉冲回波获得的信号波形，脉冲回波太弱，不能从 在捕获脉冲回波期间，单个波形或物体可能运动。 在本发明的第一实施例中，通过使用信号平均处理来减少数字光学测距仪近距离处的响应时间，其中要平均的数据数量根据预定功能的距离而变化。 在本发明的第二实施例中，沿着数字光学测距仪的视线测量对象的运动概率增加，并且通过在平均之前执行每个获取的信号波形的范围偏移来测量对象速度。 在本发明的第三实施例中，在数字光学测距仪的视线中获取的信号波形在预定的区域上被扫描，并且移动和平均的范围，以允许早期检测和进入该区域的物体的测距。

公开(公告)号：US20090119044A1

公开(公告)日：2009-05-07

申请号：US11936502

申请日：2007-11-07

申请人： Marc Levesque ,  Francois Babin ,  Daniel Cantin

发明人： Marc Levesque ,  Francois Babin ,  Daniel Cantin

IPC分类号： G06F19/00

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

摘要翻译： 减少响应时间的方法和装置以及随着光学测距仪测距的可能性的增加，数字化从从不同类型的物体返回的脉冲回波获得的信号波形，脉冲回波太弱，不能从 在捕获脉冲回波期间，单个波形或物体可能运动。 在本发明的第一实施例中，通过使用信号平均处理来减少数字光学测距仪近距离处的响应时间，其中要平均的数据数量根据预定功能的距离而变化。 在本发明的第二实施例中，沿着数字光学测距仪的视线测量对象的运动概率增加，并且通过在平均之前执行每个获取的信号波形的范围偏移来测量对象速度。 在本发明的第三实施例中，在数字光学测距仪的视线中获取的信号波形在预定的区域上被扫描，并且移动和平均的范围，以允许早期检测和进入该区域的物体的测距。

公开(公告)号：US20070076202A1

公开(公告)日：2007-04-05

申请号：US11241634

申请日：2005-09-30

申请人： Daniel Cantin ,  Francois Babin ,  Marc Levesque

发明人： Daniel Cantin ,  Francois Babin ,  Marc Levesque

IPC分类号： G01N21/00

CPC分类号： G01N21/53 ,  A01M7/0096 ,  G01N15/0205 ,  G01N15/0211 ,  G01N2021/1793 ,  G01N2021/4709 ,  G01S17/88

摘要： An optical system for measuring in real-time the spatial distribution of aerosol particles, such as pesticides or the like, sprayed from a vehicle over an agricultural field. An optical sensor is mounted directly on the vehicle and sends an excitation light beam through the aerosol as it is being sprayed. The resulting scattered light is received and analyzed to deduce therefrom information on the spatial distribution of the particles. This information is relayed to a processing unit, which in turn provides spraying instructions, for example a warning signal, to the operator of the system. The spraying of the aerosol can therefore be controlled in real-time to avoid contamination of sensitive areas.

摘要翻译： 一种用于实时测量车辆在农田上喷洒的气溶胶颗粒（如农药等）的空间分布的光学系统。 光学传感器直接安装在车辆上，并且在喷雾时将激发光束通过气溶胶。 所得到的散射光被接收和分析，从而推导出关于颗粒的空间分布的信息。 该信息被中继到处理单元，处理单元又向系统的操作者提供喷射指令，例如警告信号。 因此可以实时控制气雾剂的喷雾，以避免敏感区域的污染。

公开(公告)号：US20070076201A1

公开(公告)日：2007-04-05

申请号：US11240149

申请日：2005-09-30

申请人： Francois Babin ,  Marc Levesque

发明人： Francois Babin ,  Marc Levesque

IPC分类号： G01N21/00

CPC分类号： G01N21/53 ,  G01N2021/1793 ,  G01N2021/4709 ,  G01S7/4816 ,  G01S17/95 ,  Y02A90/19

摘要： A flat spatial response LIDAR apparatus for detecting particles within a short range is provided. The apparatus includes a light source projecting a light beam which is back-scattered by the particles to be detected. The back-scattered light is received, detected and analyzed. A spatial filter spatially filters the received back-scattered light in order to flatten the spatial response of the apparatus, so that a same concentration of particles at any distance within the short range will generate a signal of substantially the same intensity. This is for example accomplished by a properly profiled mask disposed in front of the detector, or a plurality of spatially distributed waveguides. As a result, the LIDAR apparatus can compensate for the 1/r2 dependence, or other dependences of the back-scattered light on the distance r.

摘要翻译： 提供了用于检测在短范围内的颗粒的平坦空间响应LIDAR装置。 该装置包括投射被待检测颗粒反向散射的光束的光源。 接收，检测和分析背散射光。 空间滤波器对接收到的反向散射光进行空间滤波，以平坦化装置的空间响应，使得在短距离内的任何距离处的相同浓度的颗粒将产生基本上相同强度的信号。 这例如通过设置在检测器前面的适当轮廓的掩模或多个空间分布的波导来实现。 结果，激光雷达装置可以补偿反射散射光对距离r的1 / r 2/2的依赖性或其他依赖性。

公开(公告)号：US20060196858A1

公开(公告)日：2006-09-07

申请号：US11161917

申请日：2005-08-22

申请人： Wes Barron ,  Bruno Bourliaguet ,  Marc Levesque ,  Alain Cournoyer ,  Daniel Cantin ,  Yves Champagne

发明人： Wes Barron ,  Bruno Bourliaguet ,  Marc Levesque ,  Alain Cournoyer ,  Daniel Cantin ,  Yves Champagne

IPC分类号： B23K26/00

CPC分类号： B23K26/03 ,  A44C17/00 ,  A44C27/00 ,  B23K26/032 ,  B23K26/361 ,  B23K2101/007 ,  B41M5/24 ,  B42D25/43 ,  B42D2035/44 ,  B44F1/06 ,  C04B41/0036 ,  C04B41/009 ,  G01N21/87 ,  C04B14/00

摘要： A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometres, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store.

摘要翻译： 一种用于在诸如钻石的宝石体积中的激光标记的方法和装置，该标记由多个微小的点状标记组成，其积聚可以通过暴露天然存在的内部缺陷或杂质 一个宝石的体积到一个紧密集中的激光脉冲序列。 从形成标记的点状标记的相对空间排列，认证数据被编码在宝石中。 利用宝石中其他不可见缺陷的存在，允许用激光脉冲刻印标记，该激光脉冲承载的能量大大低于在完美宝石材料的体积上所需的阈值能量。 然后，标记过程不太可能对宝石表面造成损害，并且标记可以使用各种各样的飞秒激光系统进行。 雕刻在宝石表面下方的深度上的点状标记可以通过将其个体尺寸限制在几微米之内而与肉眼无关，或者通过将其个体尺寸限制在几微米之内，同时设计仅由几个标记构成的标记。 因此，标记不会降低宝石的外观和价值。 激光标记的程序解释了天然宝石中存在的缺陷的随机空间分布以及它们的强烈局部化特征。 可以通过使用可由每个珠宝店提供的专用光学读取器来检测标记的存在。

公开(公告)号：US07917320B2

公开(公告)日：2011-03-29

申请号：US12604846

申请日：2009-10-23

申请人： Marc Levesque ,  François Babin ,  Daniel Cantin

发明人： Marc Levesque ,  François Babin ,  Daniel Cantin

IPC分类号： G01R29/26 ,  G06F19/00

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

摘要翻译： 减少响应时间的方法和装置以及随着光学测距仪测距的可能性的增加，数字化从从不同类型的物体返回的脉冲回波获得的信号波形，脉冲回波太弱，不能从 在捕获脉冲回波期间，单个波形或物体可能运动。 在本发明的第一实施例中，通过使用信号平均处理来减少数字光学测距仪近距离处的响应时间，其中要平均的数据数量根据预定功能的距离而变化。 在本发明的第二实施例中，沿着数字光学测距仪的视线测量对象的运动概率增加，并且通过在平均之前执行每个获取的信号波形的范围偏移来测量对象速度。 在本发明的第三实施例中，在数字光学测距仪的视线中获取的信号波形在预定的区域上被扫描，并且移动和平均的范围，以允许早期检测和进入该区域的物体的测距。

公开(公告)号：US07640122B2

公开(公告)日：2009-12-29

申请号：US11936502

申请日：2007-11-07

申请人： Marc Levesque ,  François Babin ,  Daniel Cantin

发明人： Marc Levesque ,  François Babin ,  Daniel Cantin

IPC分类号： G06F19/00

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

摘要翻译： 减少响应时间的方法和装置以及随着光学测距仪测距的可能性的增加，数字化从从不同类型的物体返回的脉冲回波获得的信号波形，脉冲回波太弱，不能从 在捕获脉冲回波期间，单个波形或物体可能运动。 在本发明的第一实施例中，通过使用信号平均处理来减少数字光学测距仪近距离处的响应时间，其中要平均的数据数量根据预定功能的距离而变化。 在本发明的第二实施例中，沿着数字光学测距仪的视线测量对象的运动概率增加，并且通过在平均之前执行每个获取的信号波形的范围偏移来测量对象速度。 在本发明的第三实施例中，在数字光学测距仪的视线中获取的信号波形在预定的区域上被扫描，并且移动和平均的范围，以允许早期检测和进入该区域的物体的测距。

公开(公告)号：US07895007B2

公开(公告)日：2011-02-22

申请号：US12604824

申请日：2009-10-23

申请人： Marc Levesque ,  François Babin ,  Daniel Cantin

发明人： Marc Levesque ,  François Babin ,  Daniel Cantin

IPC分类号： G01R13/00

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

公开(公告)号：US20100039637A1

公开(公告)日：2010-02-18

申请号：US12604824

申请日：2009-10-23

申请人： Marc Levesque ,  François Babin ,  Daniel Cantin

发明人： Marc Levesque ,  François Babin ,  Daniel Cantin

IPC分类号： G01C3/08

CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

公开(公告)号：US07284396B2

公开(公告)日：2007-10-23

申请号：US11161917

申请日：2005-08-22

申请人： Wes Barron ,  Bruno Bourliaguet ,  Marc Levesque ,  Alain Cournoyer ,  Daniel Cantin ,  Yves Champagne

发明人： Wes Barron ,  Bruno Bourliaguet ,  Marc Levesque ,  Alain Cournoyer ,  Daniel Cantin ,  Yves Champagne

IPC分类号： A44C17/00 ,  B23K26/40 ,  B23K26/03

CPC分类号： B23K26/03 ,  A44C17/00 ,  A44C27/00 ,  B23K26/032 ,  B23K26/361 ,  B23K2101/007 ,  B41M5/24 ,  B42D25/43 ,  B42D2035/44 ,  B44F1/06 ,  C04B41/0036 ,  C04B41/009 ,  G01N21/87 ,  C04B14/00

摘要： A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometers, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store.

摘要翻译： 一种用于在诸如钻石的宝石体积中的激光标记的方法和装置，该标记由多个微小的点状标记组成，其积聚可以通过暴露天然存在的内部缺陷或杂质而引发 一个宝石的体积到一个紧密集中的激光脉冲序列。 从形成标记的点状标记的相对空间排列，认证数据被编码在宝石中。 利用宝石中其他不可见缺陷的存在，允许用激光脉冲刻印标记，该激光脉冲承载的能量大大低于在完美宝石材料的体积上所需的阈值能量。 然后，标记过程不太可能对宝石表面造成损害，并且标记可以使用各种各样的飞秒激光系统进行。 雕刻在宝石表面下方的深度上的点状标记可以通过将其个体尺寸限制在几微米之内而与肉眼无关，或者通过将其个体尺寸限制在几微米之内，同时设计仅由几个标记构成的标记。 因此，标记不会降低宝石的外观和价值。 激光标记的程序解释了天然宝石中存在的缺陷的随机空间分布以及它们的强烈局部化特征。 可以通过使用可由每个珠宝店提供的专用光学读取器来检测标记的存在。