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：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：US07462256B2

公开(公告)日：2008-12-09

申请号：US11583061

申请日：2006-10-19

申请人： Roland Basque ,  Alain Cournoyer ,  Marc Levesque

发明人： Roland Basque ,  Alain Cournoyer ,  Marc Levesque

IPC分类号： B32B37/00

CPC分类号： B23K26/0846 ,  B23K26/032 ,  B23K26/073 ,  B23K26/206 ,  B23K2103/42 ,  B23K2103/50 ,  B29C65/1619 ,  B29C65/1629 ,  B29C65/1635 ,  B29C65/1641 ,  B29C65/1654 ,  B29C65/1667 ,  B29C65/168 ,  B29C65/1683 ,  B29C65/1687 ,  B29C65/1696 ,  B29C65/18 ,  B29C65/7473 ,  B29C66/1122 ,  B29C66/24244 ,  B29C66/4312 ,  B29C66/43121 ,  B29C66/7373 ,  B29C66/73921 ,  B29C66/80 ,  B29C66/8122 ,  B29C66/81267 ,  B29C66/81268 ,  B29C66/81419 ,  B29C66/81422 ,  B29C66/81427 ,  B29C66/83221 ,  B29C66/849 ,  B29C66/8491 ,  B29C66/934 ,  B29K2995/0027 ,  B65B51/303 ,  G01N21/89 ,  Y10T83/141 ,  Y10T83/145 ,  Y10T83/148 ,  Y10T83/541 ,  Y10T83/7487 ,  Y10T83/7573 ,  Y10T83/828 ,  Y10T156/1054 ,  Y10T156/1075 ,  Y10T156/1084 ,  Y10T156/12 ,  Y10T156/1313 ,  B29K2905/00

摘要： A clamp holds together at least two superposed, flexible polymeric films while they are optically sealed or cut by at least a laser beam. The clamp is comprised of two jaws wherein at least one of the jaws can be moved to allow a closing and an opening of the clamp. One of the jaws is a contact jaw to bring the films into contact. The other jaw is an optical jaw having an optical window to let at least one laser beam pass through it and wherein the window is wide enough to allow to optically seal or cut the whole width of the films if required. A support mechanism interconnects the jaws and allows a controlled opening and closing of the clamp.

摘要翻译： 夹具至少保持两个叠置的柔性聚合物膜，同时它们被至少激光束光学密封或切割。 夹具由两个夹爪组成，其中至少一个夹爪可以移动以允许夹具的关闭和打开。 其中一个下颚是一个接触颚，使电影接触。 另一个钳口是具有光学窗口以使至少一个激光束通过它的光学钳口，并且其中窗口足够宽以允许在需要时光学地密封或切割膜片的整个宽度。 支撑机构将钳口相互连接并允许夹具的受控打开和关闭。

公开(公告)号：US20080273876A1

公开(公告)日：2008-11-06

申请号：US12174351

申请日：2008-07-16

申请人： Paul LUNDQUIST ,  Marc Levesque ,  Denis Zaccarin

发明人： Paul LUNDQUIST ,  Marc Levesque ,  Denis Zaccarin

IPC分类号： H04B10/20 ,  H01S3/00

CPC分类号： H04B10/296 ,  H01S5/042 ,  H01S5/06825

摘要： An apparatus for suppressing optical power transients includes a variable optical attenuator receiving an input optical signal and outputting an output optical signal; an optical power sensing element coupled to the input optical signal and sensing a portion of the input optical signal; and a feedforward loop controller coupled to the variable optical attenuator and to the optical power sensing element; the feedforward control loop providing feedforward control of the variable optical attenuator to reduce optical power transients of the input optical signal and maintain a substantially constant output power based on the input optical power and a reference value; the variable optical attenuator having a default opaque state in which the input optical signal is substantially attenuated when power is not being supplied to said variable optical attenuator. Variations include feedback loop controllers and a combination feedback and feedforward loop controllers.

摘要翻译： 用于抑制光功率瞬变的装置包括：可变光衰减器，其接收输入光信号并输出​​输出光信号; 耦合到所述输入光信号并感测所述输入光信号的一部分的光功率感测元件; 以及耦合到所述可变光衰减器和所述光功率感测元件的前馈环路控制器; 所述前馈控制环路提供所述可变光衰减器的前馈控制以减少所述输入光信号的光功率瞬变，并且基于所述输入光功率和参考值保持基本恒定的输出功率; 所述可变光衰减器具有默认不透明状态，其中当功率未被提供给所述可变光衰减器时，所述输入光信号基本衰减。 变化包括反馈回路控制器和组合反馈和前馈回路控制器。

公开(公告)号：US07062125B2

公开(公告)日：2006-06-13

申请号：US10408889

申请日：2003-04-08

申请人： Alain Cournoyer ,  Marc Levesque

发明人： Alain Cournoyer ,  Marc Levesque

IPC分类号： G02B6/34 ,  G02B6/26

CPC分类号： G02B6/02 ,  G02B6/2817

摘要： A prismatic reflection optical waveguide device having an input and an output optical waveguide segments and a reflection interface provided therebetween apt to convey a light beam from one direction to another, wherein the light beam is conveyed by a single reflection on the reflection interface. Such a prismatic reflection optical waveguide device may, for example, be used as an optical waveguide sensor for measuring the refractive index of a sample medium. The measuring range and/or the sensitivity of such an optical waveguide sensor may be adjusted according to a particular application. Such a prismatic reflection optical waveguide device may also be used as a generally lossless bent optical waveguide wherein the reflection interface works as a mirror for reflecting the light beam coming from the input segment to the output segment, thereby providing a generally lossless transmission.

摘要翻译： 一种棱镜反射光波导器件，其具有输入和输出光波导段和设置在其间的反射界面，其适于将光束从一个方向传送到另一个方向，其中光束通过反射界面上的单反射传送。 例如，这种棱镜反射光波导装置可以用作用于测量样品介质的折射率的光波导传感器。 这种光波导传感器的测量范围和/或灵敏度可以根据具体应用进行调整。 这样的棱镜反射光波导器件也可以用作通常为无损弯曲的光波导，其中反射界面用作将来自输入段的光束反射到输出段的反射镜，由此提供通常无损耗的透射。

公开(公告)号：US20100324832A1

公开(公告)日：2010-12-23

申请号：US12681022

申请日：2008-04-04

申请人： Marc Levesque ,  Alain Cournoyer

发明人： Marc Levesque ,  Alain Cournoyer

IPC分类号： G06F19/00 ,  G01J3/30

CPC分类号： G01N21/718

摘要： A system and method to improve the accuracy of the measure of constituent element(s) in a sample containing domains potentially including the constituent element(s) are described herein. For each domain, the volume of the domain is estimated and the concentration of the constituent element(s) in the domain is determined using LIBS. When all the domains have been analyzed, the volumetric concentration of the domains is summed and divided by the total volume of the sample. Accordingly, by limiting the concentration analysis to separate domains, it is possible to improve the accuracy of the concentration analysis.

摘要翻译： 本文描述了提高包含可能包括构成元件的域的样品中组成元素的测量精度的系统和方法。 对于每个域，估计域的体积，并使用LIBS确定域中组成元素的浓度。 当所有域被分析时，将域的体积浓度相加并除以样品的总体积。 因此，通过将浓度分析限于分离的区域，可以提高浓度分析的准确性。

公开(公告)号：US07791792B2

公开(公告)日：2010-09-07

申请号：US12174395

申请日：2008-07-16

申请人： Paul Lundquist ,  Marc Levesque ,  Denis Zaccarin

发明人： Paul Lundquist ,  Marc Levesque ,  Denis Zaccarin

IPC分类号： H04B10/17 ,  G02B6/26

CPC分类号： H04B10/296 ,  H01S5/042 ,  H01S5/06825

摘要： An apparatus for suppressing optical power transients includes a variable optical attenuator receiving an input optical signal and outputting an output optical signal; an optical power sensing element coupled to the input optical signal and sensing a portion of the input optical signal; and a feedforward loop controller coupled to the variable optical attenuator and to the optical power sensing element; the feedforward control loop providing feedforward control of the variable optical attenuator to reduce optical power transients of the input optical signal and maintain a substantially constant output power based on the input optical power and a reference value; the variable optical attenuator having a default opaque state in which the input optical signal is substantially attenuated when power is not being supplied to said variable optical attenuator. Variations include feedback loop controllers and a combination feedback and feedforward loop controllers.

摘要翻译： 用于抑制光功率瞬变的装置包括：可变光衰减器，其接收输入光信号并输出​​输出光信号; 耦合到所述输入光信号并感测所述输入光信号的一部分的光功率感测元件; 以及耦合到所述可变光衰减器和所述光功率感测元件的前馈环路控制器; 所述前馈控制环路提供所述可变光衰减器的前馈控制以减少所述输入光信号的光功率瞬变，并且基于所述输入光功率和参考值保持基本上恒定的输出功率; 所述可变光衰减器具有默认不透明状态，其中当功率未被提供给所述可变光衰减器时，所述输入光信号基本衰减。 变化包括反馈回路控制器和组合反馈和前馈回路控制器。

公开(公告)号：US07344671B2

公开(公告)日：2008-03-18

申请号：US10722131

申请日：2003-11-26

申请人： Roland Basque ,  Alain Cournoyer ,  Marc Levesque

发明人： Roland Basque ,  Alain Cournoyer ,  Marc Levesque

IPC分类号： B65B51/10

CPC分类号： B23K26/0846 ,  B23K26/032 ,  B23K26/073 ,  B23K26/206 ,  B23K2103/42 ,  B23K2103/50 ,  B29C65/1619 ,  B29C65/1629 ,  B29C65/1635 ,  B29C65/1641 ,  B29C65/1654 ,  B29C65/1667 ,  B29C65/168 ,  B29C65/1683 ,  B29C65/1687 ,  B29C65/1696 ,  B29C65/18 ,  B29C65/7473 ,  B29C66/1122 ,  B29C66/24244 ,  B29C66/4312 ,  B29C66/43121 ,  B29C66/7373 ,  B29C66/73921 ,  B29C66/80 ,  B29C66/8122 ,  B29C66/81267 ,  B29C66/81268 ,  B29C66/81419 ,  B29C66/81422 ,  B29C66/81427 ,  B29C66/83221 ,  B29C66/849 ,  B29C66/8491 ,  B29C66/934 ,  B29K2995/0027 ,  B65B51/303 ,  G01N21/89 ,  Y10T83/141 ,  Y10T83/145 ,  Y10T83/148 ,  Y10T83/541 ,  Y10T83/7487 ,  Y10T83/7573 ,  Y10T83/828 ,  Y10T156/1054 ,  Y10T156/1075 ,  Y10T156/1084 ,  Y10T156/12 ,  Y10T156/1313 ,  B29K2905/00

摘要： The invention is specially directed towards intermittent motion packaging machines where the packages are momentarily immobilized at a forming station for the time duration of the package sealing and cutting. The polymeric sheets or films are sealed and cut after being exposed to a laser beam in a controlled and optimized manner. The laser beam is shaped with appropriate optical elements to provide a desired intensity profile in the section of the films to be sealed or sealed and cut. With this method, a package can be sealed and cut simultaneously in one exposure step. An optical clamp holds the films together while they are being sealed by the laser. The optical clamp can reflect back to the films, partially or totally, the laser beam intensity that has not been previously absorbed. The optical clamp further allows to monitor the sealing and cutting process while the process is being performed.

摘要翻译： 本发明特别涉及间歇式运动包装机，其中包装件在成型站中短时间固定在包装密封和切割的持续时间内。 聚合物片或薄膜在以受控和优化的方式暴露于激光束之后被密封和切割。 激光束被成形为具有合适的光学元件，以在待密封或密封和切割的膜的截面中提供期望的强度分布。 利用这种方法，可以在一个曝光步骤中同时密封和切割包装。 光学夹具将它们保持在一起，同时它们被激光器密封。 光学夹具可以部分或全部地反射到先前未被吸收的激光束强度。 光学夹具还允许在进行处理时监视密封和切割过程。