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    METHOD AND SYSTEM TO MEASURE THE CONCENTRATION OF CONSTITUENT ELEMENTS IN AN INHOMOGENEOUS MATERIAL USING LIBS
    1.
    发明申请
    METHOD AND SYSTEM TO MEASURE THE CONCENTRATION OF CONSTITUENT ELEMENTS IN AN INHOMOGENEOUS MATERIAL USING LIBS 审中-公开
    方法和系统，用于测量不均匀材料中元素元素的浓度

    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。

    Transient optical power suppressing apparatus, method, and network
    2.
    发明授权
    Transient optical power suppressing apparatus, method, and network 有权
    瞬态光功率抑制装置，方法和网络

    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。

    METHOD AND SYSTEM FOR LASER MARKING IN THE VOLUME OF GEMSTONES SUCH AS DIAMONDS
    5.
    发明申请
    METHOD AND SYSTEM FOR LASER MARKING IN THE VOLUME OF GEMSTONES SUCH AS DIAMONDS 有权
    用于激光标记的方法和系统，如石墨等

    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。

    SYSTEM AND METHOD FOR DETECTION OF DENTAL TARTAR
    7.
    发明申请
    SYSTEM AND METHOD FOR DETECTION OF DENTAL TARTAR 有权
    用于检测牙齿的系统和方法

    公开(公告)号：US20110165534A1

    公开(公告)日：2011-07-07

    申请号：US12981452

    申请日：2010-12-29

    申请人： Yves BERUBE-LAUZIERE ,  Naim KARAZIVAN ,  Emmanuel MONTINI ,  Sophie BERNIER ,  Marc LEVESQUE ,  Yvan MIMEAULT ,  Michel DOUCET

    发明人： Yves BERUBE-LAUZIERE ,  Naim KARAZIVAN ,  Emmanuel MONTINI ,  Sophie BERNIER ,  Marc LEVESQUE ,  Yvan MIMEAULT ,  Michel DOUCET

    IPC分类号： A61B6/14

    CPC分类号： A61B5/0088

    摘要： A dental tartar detection system (10), especially for detection of subgingival tartar (S), comprises a probe (12) adapted to be displaced along a tooth (T) an illumination system (14) for illuminating with an incident light a region on the tooth (T), a detection system (16) for collecting the light reflected thereat, and an analysis system (34) for providing a signal to an operator of the probe (12) when measurements on the reflected light in one or more predetermined range of wavelengths fall within any predetermined range of values that are characteristic of tartar (S). Typically, the detection of tartar (S) is achieved on the basis of the possible colours that tartar (S) can have such that the aforementioned one or more predetermined range of values cover wavelengths associated with colours of tartar (S).

    摘要翻译： 特别是用于检测龈下牙垢（S）的牙齿牙垢检测系统（10）包括适于沿着牙齿（T）移位的探针（12），照明系统（14）用于将入射光照射在 牙齿（T），用于收集在其上反射的光的检测系统（16），以及用于在以一个或多个预定的方式对反射光进行测量时向探测器（12）的操作者提供信号的分析系统（34） 波长范围落在作为牙垢（S）特征的值的任何预定范围内。 通常，基于可以具有的牙垢（S）可能的颜色，实现牙垢（S）的检测，使得上述一个或多个预定范围的值覆盖与牙垢（S）的颜色相关的波长。

    Digital signal processing in optical systems used for ranging applications
    8.
    发明授权
    Digital signal processing in optical systems used for ranging applications 有权
    用于测距应用的光学系统中的数字信号处理

    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。

    FIBER-OPTIC TEMPERATURE SENSOR ASSEMBLY
    9.
    发明申请
    FIBER-OPTIC TEMPERATURE SENSOR ASSEMBLY 有权
    光纤温度传感器总成

    公开(公告)号：US20110007997A1

    公开(公告)日：2011-01-13

    申请号：US12498708

    申请日：2009-07-07

    申请人： Pierre Galarneau ,  Marc Levesque ,  André Fougères ,  Bruno Labranche

    发明人： Pierre Galarneau ,  Marc Levesque ,  André Fougères ,  Bruno Labranche

    IPC分类号： G02B6/00

    CPC分类号： G02B6/266 ,  G01K11/00 ,  G01K11/3213 ,  G02B6/3859

    摘要： A fiber-optic temperature sensor assembly comprises a cap with an inner cavity. A sensor member is received in the inner cavity of the cap. The sensor member has light-transmitting properties adapted to change with temperature variations. An optical fiber has a first end received in the inner cavity of the cap, and a second end of the optical fiber being adapted to be connected to a processing unit for transmitting light signals between the sensor member and the processing unit. A pressing device is received in the cap and pressing against the sensor member such that the sensor member is in operational contact with the first end of the optical fiber for transmission of light therebetween during operation of the fiber-optic temperature sensor assembly.

    摘要翻译： 光纤温度传感器组件包括具有内腔的盖。 传感器构件容纳在盖的内腔中。 传感器构件具有适于随温度变化而变化的透光性。 光纤具有容纳在盖的内腔中的第一端，并且光纤的第二端适于连接到用于在传感器构件和处理单元之间传输光信号的处理单元。 挤压装置被容纳在盖中并压靠传感器构件，使得传感器构件在光纤温度传感器组件的操作期间与光纤的第一端处于可操作的接触状态，以在它们之间传输光。

    DIGITAL SIGNAL PROCESSING IN OPTICAL SYSTEMS USED FOR RANGING APPLICATIONS
    10.
    发明申请
    DIGITAL SIGNAL PROCESSING IN OPTICAL SYSTEMS USED FOR RANGING APPLICATIONS 有权
    用于范围应用的光学系统中的数字信号处理

    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。