公开(公告)号：US5128797A

公开(公告)日：1992-07-07

申请号：US653605

申请日：1991-02-11

申请人： Glen W. Sachse ,  Liang-Guo Wang

发明人： Glen W. Sachse ,  Liang-Guo Wang

IPC分类号： G01J3/08 ,  G01N21/35

CPC分类号： G01N21/3518 ,  G01J3/08 ,  G01N2021/3509

摘要： A non-mechanical optical switch is provided for alternately switching a monochromatic or quasi-monochromatic light beam along two optical paths. A polarizer polarizes light into a single, e.g., vertical component which is then rapidly modulated into vertical and horizontal components by a polarization modulator. A polarization beam splitter then reflects one of these components along one path and transmits the other along the second path. In the specific application of gas filter correlation radiometry, one path is directed through a vacuum cell and one path is directed through a gas correlation cell containing a desired gas. Reflecting mirrors cause these two paths to intersect at a second polarization beam splitter which reflects one component and transmits the other to recombine them into a polarization modulated beam which can be detected by an appropriate single sensor.

摘要翻译： 提供非机械光学开关用于沿着两个光路交替地切换单色或准单色光束。 偏振器将光线偏振成单个例如垂直分量，然后通过偏振调制器将光快速调制成垂直和水平分量。 偏振分束器然后沿着一个路径反射这些分量中的一个，并沿第二路径传输另一个。 在气体过滤器相关辐射测量的具体应用中，一条路径被引导通过真空室，一条路径被引导通过含有所需气体的气相关池。 反射镜使得这两条路径在第二偏振分束器处相交，​​第二偏振分束器反射一个分量并透射另一个分量，将它们重新组合成可由适当的单个传感器检测的偏振调制束。

公开(公告)号：US06922242B2

公开(公告)日：2005-07-26

申请号：US10465386

申请日：2003-06-19

申请人： Glen W. Sachse

发明人： Glen W. Sachse

IPC分类号： G01J3/08 ,  G01J3/42 ,  G01J3/447 ,  G01N21/21 ,  G01N21/31 ,  G01N21/35 ,  G02B5/30 ,  G01J4/00

CPC分类号： G01J3/08 ,  G01N21/314 ,  G01N21/3518

摘要： An optical path switch divides sample path radiation into a time series of alternating first polarized components and second polarized components. The first polarized components are transmitted along a first optical path and the second polarized components along a second optical path. A first gasless optical filter train filters the first polarized components to isolate at least a first wavelength band thereby generating first filtered radiation. A second gasless optical filter train filters the second polarized components to isolate at least a second wavelength band thereby generating second filtered radiation. A beam combiner combines the first and second filtered radiation to form a combined beam of radiation. A detector is disposed to monitor magnitude of at least a portion of the combined beam alternately at the first wavelength band and the second wavelength band as an indication of the concentration of the substance in the sample path.

摘要翻译： 光路开关将采样路径辐射分为交替的第一偏振分量和第二偏振分量的时间序列。 第一偏振分量沿着第一光路传播，第二偏振分量沿着第二光路传输。 第一无气体光学滤波器组对第一极化分量进行滤波以隔离至少第一波长带，从而产生第一滤波辐射。 第二无气体光学滤波器组对第二极化分量进行滤波以隔离至少第二波长带，从而产生第二滤波辐射。 光束组合器组合第一和第二滤波辐射以形成组合的辐射束。 检测器被设置为在第一波长带和第二波长带上交替地监测组合光束的至少一部分的大小作为样品路径中物质浓度的指示。

公开(公告)号：US06611329B2

公开(公告)日：2003-08-26

申请号：US09437616

申请日：1999-11-10

申请人： Glen W. Sachse

发明人： Glen W. Sachse

IPC分类号： G01J400

CPC分类号： G01J3/08 ,  G01N21/314 ,  G01N21/3518

摘要： An optical path switch divides sample path radiation into a time series of alternating first polarized components and second polarized components. The first polarized components are transmitted along a first optical path and the second polarized components along a second optical path. A first gasless optical filter train filters the first polarized components to isolate at least a first wavelength band thereby generating first filtered radiation. A second gasless optical filter train filters the second polarized components to isolate at least a second wavelength band thereby generating second filtered radiation. A beam combiner combines the first and second filtered radiation to form a combined beam of radiation. A detector is disposed to monitor magnitude of at least a portion of the combined beam alternately at the first wavelength band and the second wavelength band as an indication of the concentration of the substance in the sample path.

摘要翻译： 光路开关将采样路径辐射分为交替的第一偏振分量和第二偏振分量的时间序列。 第一偏振分量沿着第一光路传播，第二偏振分量沿着第二光路传输。 第一无气体光学滤波器组对第一极化分量进行滤波以隔离至少第一波长带，从而产生第一滤波辐射。 第二无气体光学滤波器组对第二极化分量进行滤波以隔离至少第二波长带，从而产生第二滤波辐射。 光束组合器组合第一和第二滤波辐射以形成组合的辐射束。 检测器被设置为在第一波长带和第二波长带上交替地监测组合光束的至少一部分的大小作为样品路径中物质浓度的指示。

公开(公告)号：US07253903B2

公开(公告)日：2007-08-07

申请号：US11027930

申请日：2004-12-29

申请人： Glen W. Sachse ,  Mauro Rana

发明人： Glen W. Sachse ,  Mauro Rana

IPC分类号： G01N21/00

CPC分类号： G01N21/314 ,  G01N2021/1793

摘要： Each of two sensors, positioned to simultaneously detect electromagnetic radiation absorption along a path, is calibrated to define a unique response curve associated therewith that relates a change in voltage output for each sensor to a change in optical density. A ratio-of-responses curve is defined by a ratio of the response curve associated with the first sensor to the response curve associated with the second sensor. A ratio of sensor output changes is generated using outputs from the sensors. An operating point on the ratio-of-responses curve is established using the ratio of sensor output changes. The established operating point is indicative of an optical density. When the operating point is in the non-linear response region of at least one of the sensors, the operating point and optical density corresponding thereto can be used to establish an actual response of at least one of the sensors whereby the actual sensor output can be used in determining changes in the optical density.

摘要翻译： 被定位成同时检测沿着路径的电磁辐射吸收的两个传感器中的每一个被校准以定义与之相关联的唯一响应曲线，其将每个传感器的电压输出的变化与光密度的变化相关联。 响应曲线由与第一传感器相关联的响应曲线与与第二传感器相关联的响应曲线的比率定义。 使用传感器的输出产生传感器输出变化的比率。 使用传感器输出变化的比率建立响应曲线的操作点。 所建立的工作点表示光密度。 当工作点处于至少一个传感器的非线性响应区域中时，与其对应的工作点和光密度可用于建立至少一个传感器的实际响应，从而实际的传感器输出可以 用于确定光密度的变化。

公开(公告)号：US6057923A

公开(公告)日：2000-05-02

申请号：US290954

申请日：1999-04-13

申请人： Glen W. Sachse

发明人： Glen W. Sachse

IPC分类号： G01J3/08 ,  G01J3/42 ,  G01J3/447 ,  G01N21/21 ,  G01N21/31 ,  G01N21/35 ,  G02B5/30

CPC分类号： G01J3/08 ,  G01N21/314 ,  G01N21/3518

摘要： A system and method are provided for detecting one or more substances. An optical path switch divides sample path radiation into a time series of alternating first polarized components and second polarized components. The first polarized components are transmitted along a first optical path and the second polarized components along a second optical path. A first gasless optical filter train filters the first polarized components to isolate at least a first wavelength band thereby generating first filtered radiation. A second gasless optical filter train filters the second polarized components to isolate at least a second wavelength band thereby generating second filtered radiation. The first wavelength band and second wavelength band are unique. Further, spectral absorption of a substance of interest is different at the first wavelength band as compared to the second wavelength band. A beam combiner combines the first and second filtered radiation to form a combined beam of radiation. A detector is disposed to monitor magnitude of at least a portion of the combined beam alternately at the first wavelength band and the second wavelength band as an indication of the concentration of the substance in the sample path.

摘要翻译： 提供了用于检测一种或多种物质的系统和方法。 光路开关将采样路径辐射分为交替的第一偏振分量和第二偏振分量的时间序列。 第一偏振分量沿着第一光路传播，第二偏振分量沿着第二光路传输。 第一无气体光学滤波器组对第一极化分量进行滤波以隔离至少第一波长带，从而产生第一滤波辐射。 第二无气体光学滤波器组对第二极化分量进行滤波以隔离至少第二波长带，从而产生第二滤波辐射。 第一波长带和第二波长带是唯一的。 此外，与第二波长带相比，感兴趣的物质的光谱吸收在第一波长带处不同。 光束组合器组合第一和第二滤波辐射以形成组合的辐射束。 检测器被设置为在第一波长带和第二波长带上交替地监测组合光束的至少一部分的大小作为样品路径中物质浓度的指示。