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    MULTI-PASS OPTICAL CELL WITH ACTUATOR FOR ACTUATING A REFLECTIVE SURFACE
    14.
    发明申请
    MULTI-PASS OPTICAL CELL WITH ACTUATOR FOR ACTUATING A REFLECTIVE SURFACE 审中-公开
    具有用于激活反射表面的致动器的多通道光电池

    公开(公告)号：WO2007133317A3

    公开(公告)日：2008-06-05

    申请号：PCT/US2007005739

    申请日：2007-03-07

    Applicant: LI COR INC ,  ECKLES ROBERT D ,  ANDERSON TYLER G

    Inventor： ECKLES ROBERT D ,  ANDERSON TYLER G

    IPC: G01N21/00

    CPC classification number: G01N21/031 ,  G01J3/0297 ,  G01J3/42 ,  G01N21/15 ,  G01N33/0047 ,  G01N2021/151 ,  G01N2021/152 ,  G01N2021/3513 ,  G01N2021/399

    Abstract: A multi-pass optical cell with an actuator for actuating a reflective surface is provided. In one preferred embodiment, an apparatus is provided comprising a first reflective surface, a second reflective surface, and a support structure supporting the first and second reflective surfaces. The support structure positions the first and second reflective surfaces to create an optical cell. The apparatus also comprises a source and a detector, which are positioned such that light emitted from the source is reflected in the optical cell at least one time between the first and second reflective surfaces before reaching the detector. The apparatus further comprises an actuator coupled with and operative to actuate the first reflective surface. In some embodiments, the actuator rotates the first reflective surface. Also, in some embodiments, the multi-pass optical cell is an open path multi-pass optical cell, while, in other embodiments, the multi-pass optical cell is a closed path multi-pass optical cell.

    Abstract translation: 提供具有用于致动反射表面的致动器的多通光学单元。 在一个优选实施例中，提供了包括第一反射表面，第二反射表面和支撑第一和第二反射表面的支撑结构的装置。 支撑结构定位第一和第二反射表面以创建光学单元。 该设备还包括源和检测器，其被定位成使得从光源发射的光在到达检测器之前在第一和第二反射表面之间至少一次在光学单元中反射。 所述装置还包括与所述第一反射表面起动并且可操作地致动所述第一反射表面的致动 在一些实施例中，致动器旋转第一反射表面。 此外，在一些实施例中，多遍光学单元是开放式多通道光学单元，而在其他实施例中，多通道光学单元是闭路多光学单元。

    GAS EXCHANGE SYSTEM FLOW CONFIGURATION
    15.
    发明申请
    GAS EXCHANGE SYSTEM FLOW CONFIGURATION 审中-公开
    气体交换系统流量配置

    公开(公告)号：WO2012040439A3

    公开(公告)日：2012-06-14

    申请号：PCT/US2011052724

    申请日：2011-09-22

    Applicant: LI COR INC ,  JOHNSON MARK A ,  PARR ANDREW S ,  ECKLES ROBERT D

    Inventor： JOHNSON MARK A ,  PARR ANDREW S ,  ECKLES ROBERT D

    IPC: G01N21/37 ,  G01N33/00 ,  G01N33/24

    CPC classification number: G01N33/0009 ,  B33Y70/00 ,  B33Y80/00 ,  G01N21/05 ,  G01N21/3504 ,  G01N33/004 ,  G01N33/0098 ,  G01N2021/8466

    Abstract: System flow path designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. According to one aspect, a gas exchange analysis system includes a sample chamber defining a measurement volume for analysis of a sample, the sample chamber having an inlet and an outlet, and a flow splitting mechanism located proximal to the sample chamber, the mechanism configured to split a gas flow received at an input port from a remote source to a first output port and to a second output port, wherein the first output port is coupled with the inlet of the sample chamber. The internal surface(s) of the chamber defining the measurement volume can be metal plated. The system also can include a source of gas coupled with the inlet of the sample chamber and a gas analyzer coupled with the outlet of the sample chamber and configured to measure a concentration of one or more gases exiting the chamber, whereby metal plated internal surface(s) of the chamber can reduce sorption of the one or more gases within the chamber, and a second gas analyzer coupled with the second output port of the flow splitting mechanism and configured to measure a concentration of the one or more gases. Advantageously, gas diffusion sources and sinks are reduced due to the proximity of the flow splitting mechanism with the sample chamber and gas analyzers as well as the metal plating.

    Abstract translation: 系统流路设计，尽量减少气体扩散源和水槽的影响。 通过减少寄生源和汇的幅度，可以更准确地测量较低的光合作用和蒸腾速率，例如，不需要广泛的经验补偿。 根据一个方面，一种气体交换分析系统包括：样本室，其限定用于分析样品的测量体积，所述样品室具有入口和出口;以及位于所述样品室附近的分流机构，所述机构被配置为 将从输入端口接收的气流从远程源分解到第一输出端口和第二输出端口，其中第一输出端口与样品室的入口耦合。 限定测量体积的室的内表面可以是金属镀覆的。 该系统还可以包括与样品室的入口耦合的气体源和与样品室的出口耦合的气体分析器，并且被配置为测量离开室的一种或多种气体的浓度，由此金属镀覆的内表面 s）可以减少腔室内的一种或多种气体的吸附，以及与分流机构的第二输出端口耦合并被配置成测量一种或多种气体的浓度的第二气体分析器。 有利的是，由于流动分离机构与样品室和气体分析仪以及金属镀层的接近，气体扩散源和水槽被减少。

    GAS EXCHANGE SYSTEM FLOW CONFIGURATION
    16.
    发明申请
    GAS EXCHANGE SYSTEM FLOW CONFIGURATION 审中-公开
    气体交换系统流量配置

    公开(公告)号：WO2012040504A3

    公开(公告)日：2012-06-07

    申请号：PCT/US2011052821

    申请日：2011-09-22

    Applicant: LI COR INC ,  JOHNSON MARK A ,  ECKLES ROBERT D ,  MCDERMITT DAYLE K

    Inventor： JOHNSON MARK A ,  ECKLES ROBERT D ,  MCDERMITT DAYLE K

    IPC: G01N21/37 ,  G01N1/22

    CPC classification number: G01N33/0031 ,  A01G7/00 ,  G01F1/05 ,  G01N21/3504 ,  G01N33/004 ,  G01N33/0098 ,  G01N2021/3513

    Abstract: Active compensation designs to offset the impact of gas diffusion sources and sinks in a photosynthesis and transpiration measurement system are disclosed. A sensor head for use in a gas exchange analysis system includes an active, piezoelectric flow splitting device for splitting a flow between a sample chamber and bypass pathway. The active flow splitting device is controlled by feedback from a downstream flow meter. A continuous measurement system for rapidly and accurately surveying large numbers of samples is described.

    Abstract translation: 公开了用于抵消气体扩散源和水槽在光合作用和蒸腾测量系统中的影响的主动补偿设计。 用于气体交换分析系统的传感器头包括用于分离样品室和旁路通路之间的流动的主动压电流分流装置。 主动分流装置由来自下游流量计的反馈控制。 描述了用于快速和准确地测量大量样品的连续测量系统。

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