Optical sensing devices
    11.
    发明授权
    Optical sensing devices 有权
    光学传感器件

    公开(公告)号:US06590665B2

    公开(公告)日:2003-07-08

    申请号:US09810765

    申请日:2001-03-16

    Abstract: An optical sensor is provided. The sensor includes an optical fiber having a free extremity on which a polymer layer is deposited normal to the longitudinal axis. A light source injects a analytical light beam in the fiber, which is reflected by the polymer layer. The reflected beam is analyzed by a spectrum analyzer, which determines the thickness of the polymer layer based on the Fabry-Perot effect. This thickness is related to a substance to be detected. An optical nose made from a plurality of such sensors is also provided, and may be used to detected a variety of substances.

    Abstract translation: 提供光学传感器。 传感器包括具有自由端的光纤,聚合物层垂直于纵轴沉积在该光纤上。 光源将分析光束注入到由聚合物层反射的纤维中。 通过光谱分析仪分析反射光束,该光谱分析仪基于法布里 - 珀罗效应确定聚合物层的厚度。 该厚度与要检测的物质有关。 还提供由多个这样的传感器制成的光学鼻,并且可以用于检测各种物质。

    Optical interferometric current sensor and method using a single mode
birefringent waveguide and a pseudo-depolarizer for measuring
electrical current
    12.
    发明授权
    Optical interferometric current sensor and method using a single mode birefringent waveguide and a pseudo-depolarizer for measuring electrical current 失效
    光干涉电流传感器和使用单模双折射波导和伪去极化器测量电流的方法

    公开(公告)号:US5587791A

    公开(公告)日:1996-12-24

    申请号:US313690

    申请日:1994-09-27

    CPC classification number: G01R15/246

    Abstract: The interferometric current sensor is for measuring an electrical current. It comprises a light source for generating a light beam; a single mode birefringent waveguide having a linear birefringence and a circular birefringence, the circular and linear birefringences having respectively given orders of magnitude, the order of magnitude of the circular birefringence being equal or higher than the order of magnitude of the linear birefringence, the waveguide having a first loop portion for encircling the electrical current; a beamsplitter having a first input port optically coupled to the light source, and second and third input/output ports optically coupled to ends of the waveguide for launching counter-propagating light beams into the respective ends of the waveguide and for receiving the counter-propagating light beams therefrom; and a pseudo-depolarizer optically coupled in series with the waveguide for converting each of the counter-propagating light beams into a predetermined ratio of useful counter-propagating light signals and useless counter-propagating light signals. It also comprises an optical detector optically coupled to the ends of the waveguide via the beamsplitter for detecting a light intensity, the light intensity is representative of the current.

    Abstract translation: 干涉电流传感器用于测量电流。 它包括用于产生光束的光源; 具有线性双折射和圆形双折射的单模双折射波导,圆形和线性双折射分别具有数量级,圆形双折射的数量级等于或高于线性双折射的数量级,波导 具有用于环绕电流的第一回路部分; 具有光耦合到光源的第一输入端口的分束器和光学耦合到波导的端部的第二和第三输入/输出端口,用于将反向传播的光束发射到波导的相应端部并且用于接收反向传播的 光束; 以及与波导串联光学耦合的伪去偏振器,用于将每个反向传播的光束转换成有效的反向传播光信号和无用的反向传播光信号的预定比例。 它还包括光学检测器,其通过分光器光学耦合到波导的端部,用于检测光强度,光强度代表电流。

    Optical fiber polarimetric chemical sensor with modulated injection of sample fluid
    13.
    发明授权
    Optical fiber polarimetric chemical sensor with modulated injection of sample fluid 有权
    具有调制注射样品液的光纤偏振化学传感器

    公开(公告)号:US08574920B2

    公开(公告)日:2013-11-05

    申请号:US13182974

    申请日:2011-07-14

    Abstract: An optical fiber polarimetric chemical sensor for capillary gas chromatography in which a sample fluid is injected into a capillary in the form of a periodic pulse train. Each individual pulse defines a moving polarization coupling zone that affects the polarization state of the light propagating in a birefringent optical waveguide that includes the capillary. The spacing between consecutive coupling zones can be made equal to the polarization beat length of the waveguide when the injection frequency of the pulses is properly selected, thus defining a resonance condition for a given analyte. The contributions of the successive coupling zones present along the length of the capillary then add up in phase, thus resulting in a detected optical signal having an enhanced amplitude peak at the injection frequency. In this manner, the sensitivity can be enhanced.

    Abstract translation: 一种用于毛细管气相色谱的光纤偏振化学传感器,其中将样品流体以周期性脉冲串的形式注入到毛细管中。 每个单独的脉冲限定影响在包括毛细管的双折射光波导中传播的光的偏振态的移动极化耦合区。 当脉冲的注入频率被适当选择时,连续耦合区之间的间距可以等于波导的极化波长长度,从而为给定的分析物定义共振条件。 沿着毛细管长度存在的连续耦合区的贡献随同时相加,从而导致检测到的光信号在注入频率处具有增强的振幅峰值。 以这种方式,可以提高灵敏度。

    ROBOTIC BALL DEVICE WITH IMPROVED ROBUSTNESS AND A MULTITUDE OF INTERACTIVE AND SENSING CAPABILITIES
    14.
    发明申请
    ROBOTIC BALL DEVICE WITH IMPROVED ROBUSTNESS AND A MULTITUDE OF INTERACTIVE AND SENSING CAPABILITIES 有权
    具有改进的稳健性和多种交互性和感知能力的机器人球装置

    公开(公告)号:US20130233630A1

    公开(公告)日:2013-09-12

    申请号:US13823011

    申请日:2011-09-28

    Abstract: A robotic ball device having a center point and an axis of rotation passing through the center point around which the robotic ball device rotates during motion in a forward linear direction includes a housing and a defined pathway located on an inner face of the housing that forms a closed loop around the axis of rotation. A rolling member is contained in the housing and movably disposed on the defined pathway. An actuator is coupled to the rolling member for actuating rotation of the rolling member. A weighted component is operationally coupled to the rolling member, and the weighted component is sufficiently heavy to maintain the rolling member, during a motion in the forward linear direction, at a substantially constant angular position in a forward vertical plane, which dissects the rolling member, relative to an origin in a moving frame of reference that moves with the robotic ball device.

    Abstract translation: 具有穿过机器人球装置在向前线性方向运动期间旋转的中心点的中心点和旋转轴线的机器人球装置包括壳体和位于壳体的内表面上的限定通道,该通道形成 闭环绕旋转轴。 滚动部件容纳在壳体中并可移动地设置在限定的路径上。 致动器联接到滚动构件,用于致动滚动构件的旋转。 加权部件可操作地联接到滚动部件,并且加权部件足够重以在前向线性方向的运动期间保持滚动部件处于在垂直平面中的基本恒定的角位置,从而将滚动部件 相对于与机器人球装置一起运动的移动的参考系中的原点。

    Evanescent wave multimode optical waveguide sensitive to a chemical species and/or a physical parameter and provided with continuous redistribution of optical power between the modes
    15.
    发明授权
    Evanescent wave multimode optical waveguide sensitive to a chemical species and/or a physical parameter and provided with continuous redistribution of optical power between the modes 有权
    衰减波多模光波导对化学物质和/或物理参数敏感,并且在模式之间提供光功率的连续重新分配

    公开(公告)号:US08120774B2

    公开(公告)日:2012-02-21

    申请号:US12952313

    申请日:2010-11-23

    CPC classification number: G01N21/7703 G01N2021/7716 G01N2021/7759

    Abstract: There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.

    Abstract translation: 提供了对化学物质或物理参数敏感的ev逝波多模光波导。 光波导包括芯和包层,其包层折射率低于用于引导在光波导中传播的光的芯的包层折射率。 包层用芯提供了提供模式耦合的光波导。 在包层中提供化学指示剂,以使包层的光吸收变化作为化学物质或物理参数的函数。 包层被传播光的ev逝波所询问。 当光沿光波导传播时,模式耦合导致多个模式之间重新分布未吸收的光功率。

    Evanescent wave multimode optical waveguide sensor with continuous redistribution of optical power between the modes
    16.
    发明授权
    Evanescent wave multimode optical waveguide sensor with continuous redistribution of optical power between the modes 有权
    衰减波多模光波导传感器,在模式之间连续重新分配光功率

    公开(公告)号:US07864321B2

    公开(公告)日:2011-01-04

    申请号:US11757584

    申请日:2007-06-04

    CPC classification number: G01N21/7703 G01N2021/7716 G01N2021/7759

    Abstract: There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.

    Abstract translation: 提供了对化学物质或物理参数敏感的ev逝波多模光波导。 光波导包括芯和包层,其包层折射率低于用于引导在光波导中传播的光的芯的包层折射率。 包层用芯提供了提供模式耦合的光波导。 在包层中提供化学指示剂,以使包层的光吸收变化作为化学物质或物理参数的函数。 包层被传播光的ev逝波所询问。 当光沿光波导传播时,模式耦合导致多个模式之间重新分布未吸收的光功率。

    Optical fiber polarimetric chemical sensor
    17.
    发明申请
    Optical fiber polarimetric chemical sensor 有权
    光纤偏光化学传感器

    公开(公告)号:US20070269174A1

    公开(公告)日:2007-11-22

    申请号:US11437034

    申请日:2006-05-19

    Abstract: The invention relates to distributed optical waveguide polarimetric chemical analysis. Real-time monitoring of a separation process of a fluid in a capillary column is provided using a distributed sensor comprising a birefringent optical waveguide placed between two polarizers. The optical waveguide has a longitudinal channel defined by a channel surface in its cladding and adapted to receive the fluid such that it travels in said longitudinal channel. The longitudinal channel is positioned with respect to the core such that channel surface absorption of the fluid traveling in the longitudinal channel causes a local variation of the orientation of the polarization axes of the optical waveguide. The proposed embodiment can be used for monitoring the velocity of the separated components along the channel.

    Abstract translation: 本发明涉及分布式光波导偏振化学分析。 使用包括放置在两个偏振器之间的双折射光波导的分布式传感器来提供毛细管柱中的流体的分离过程的实时监测。 光波导具有由其包层中的通道表面限定的并且适于接收流体使得其在所述纵向通道中行进的纵向通道。 纵向通道相对于芯定位,使得在纵向通道中行进的流体的通道表面吸收导致光波导的偏振轴的取向的局部变化。 所提出的实施例可用于监测沿着通道的分离的部件的速度。

    Microporous glass waveguides doped with selected materials
    19.
    发明授权
    Microporous glass waveguides doped with selected materials 失效
    掺杂选择材料的微孔玻璃波导

    公开(公告)号:US06751387B2

    公开(公告)日:2004-06-15

    申请号:US10092164

    申请日:2002-03-05

    Abstract: The present invention concerns waveguides made from porous glass which have been doped with certain selected materials which exhibit optical properties. In the context of the invention, the selected materials are optical materials which exhibit optical activity or a Faraday effect, such as an electro-optic material, and more specifically a polymer. Devices made according to the present invention can be used as phase modulators.

    Abstract translation: 本发明涉及由多孔玻璃制成的波导,这些波导已经掺杂有表现出光学性质的某些选定材料。 在本发明的上下文中,所选择的材料是具有光学活性或法拉第效应的光学材料,例如电光材料,更具体地说是聚合物。 根据本发明制造的器件可以用作相位调制器。

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