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1. 发明授权

US08035816B2 Method and apparatus for measuring the optical absorption of samples 有权
标题翻译：测量样品光吸收的方法和装置
公开(公告)号：US08035816B2
公开(公告)日：2011-10-11
申请号：US12295845
申请日：2007-04-10
申请人： Albert Randow , Helmut Dandl , Hans Krause
发明人： Albert Randow , Helmut Dandl , Hans Krause
IPC分类号： G01N21/59
CPC分类号： G01N21/274 , G01J3/02 , G01J3/0232 , G01J3/42 , G01J2001/4242 , G01N21/3518
摘要： In a method and apparatus for measuring the optical absorption of samples having a light source (1), a photoelectric converter (8), a measurement beam path extending between the light source (1) and the converter (8), in which path the sample to be examined is arranged, a reference beam path extending between the light source (1) and the converter (8), in which path a reference sample is arranged, and a motor-driven chopper disc (10), the chopper disc (10) is configured with a first number of first openings (15) unblocking only the measurement beam path and a second number of second openings (16) unblocking only the path for the reference beam. A lock-in amplifier (21) and a device (17) for synchronising the lock-in amplifier (21) with the chopper disc (10) is connected to the converter (8) and an evaluation circuit (26) establishes the quotient of the transmitted intensity of the reference beam path detected by the converter (8) and the transmitted intensity of the measurement beam path detected by the converter (8) as a measurement for the concentration of the sample in such a way that the decrease in the intensity of the beam by absorption leads to an increase in sensitivity.
摘要翻译：在用于测量具有光源（1）的样品的光吸收的方法和装置中，光电转换器（8），在光源（1）和转换器（8）之间延伸的测量光束路径，其中路径布置要检查的样本，在光源（1）和转换器（8）之间延伸的参考光束路径，其中布置参考样本的路径，以及电动驱动的斩波盘（10），斩波盘 10）配置有仅解除测量光束路径的第一数量的第一开口（15）和仅解除参考光束的路径的第二数量的第二开口（16）。锁定放大器（21）和用于使锁定放大器（21）与斩波盘（10）同步的装置（17）连接到转换器（8），并且评估电路（26）建立由转换器（8）检测的参考光束路径的透射强度和由转换器（8）检测的测量光束路径的透射强度作为样品浓度的测量，使得强度的降低通过吸收导致光束的增加。

2. 发明申请

US20090168064A1 METHOD AND APPARATUS FOR MEASURING THE OPTICAL ABSORPTION OF SAMPLES 有权
标题翻译：用于测量样品的光学吸收的方法和装置
公开(公告)号：US20090168064A1
公开(公告)日：2009-07-02
申请号：US12295845
申请日：2007-04-10
申请人： Albert Randow , Helmut Dandl , Hans Krause
发明人： Albert Randow , Helmut Dandl , Hans Krause
IPC分类号： G01N21/59
CPC分类号： G01N21/274 , G01J3/02 , G01J3/0232 , G01J3/42 , G01J2001/4242 , G01N21/3518
摘要： In a method and apparatus for measuring the optical absorption of samples having a light source (1), a photoelectric converter (8), a measurement beam path extending between the light source (1) and the converter (8), in which path the sample to be examined is arranged, a reference beam path extending between the light source (1) and the converter (8), in which path a reference sample is arranged, and a motor-driven chopper disc (10), the chopper disc (10) is configured with a first number of first openings (15) unblocking only the measurement beam path and a second number of second openings (16) unblocking only the path for the reference beam. A lock-in amplifier (21) and a device (17) for synchronising the lock-in amplifier (21) with the chopper disc (10) is connected to the converter (8) and an evaluation circuit (26) establishes the quotient of the transmitted intensity of the reference beam path detected by the converter (8) and the transmitted intensity of the measurement beam path detected by the converter (8) as a measurement for the concentration of the sample in such a way that the decrease in the intensity of the beam by absorption leads to an increase in sensitivity.
摘要翻译：在用于测量具有光源（1）的样品的光吸收的方法和装置中，光电转换器（8），在光源（1）和转换器（8）之间延伸的测量光束路径，其中路径布置要检查的样本，在光源（1）和转换器（8）之间延伸的参考光束路径，其中布置参考样本的路径，以及电动驱动的斩波盘（10），斩波盘 10）配置有仅解除测量光束路径的第一数量的第一开口（15）和仅解除参考光束的路径的第二数量的第二开口（16）。锁定放大器（21）和用于使锁定放大器（21）与斩波盘（10）同步的装置（17）连接到转换器（8），并且评估电路（26）建立由转换器（8）检测的参考光束路径的透射强度和由转换器（8）检测的测量光束路径的透射强度作为样品浓度的测量，使得强度的降低通过吸收导致光束的增加。

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