公开(公告)号：US5652654A

公开(公告)日：1997-07-29

申请号：US689391

申请日：1996-08-12

Applicant: George Asimopoulos

Inventor： George Asimopoulos

IPC: G01J3/08 ,  G01J3/28 ,  G01J3/42 ,  G01J3/18

CPC classification number: G01J3/2889 ,  G01J3/08 ,  G01J3/42 ,  G01J2003/2866

Abstract: A dual beam spectophotometer is described in which a beamsplitter is at least partially surrounded by a chopper, the combination of which provide sample and reference beams. An oscillating grating produces a monochromatic light beam scans a selected spectral range of wavelengths. The movement of a second chopper and of the oscillating grating is controlled to alternately pass sample and reference spectrums for detection by a detector and to block all radiation. Detected signals are processed for storage by suitable electronics and a computer. The electronics also control the motion of the oscillating grating and chopper. A set of beamsplitters with distinctly different sample-to-reference beam ratios are provided to add versatility to the spectrophotometer.

Abstract translation: 描述了一种双光束光谱仪，其中分束器至少部分地由斩波器包围，其组合提供了采样和参考光束。 振荡光栅产生单色光束扫描所选择的波长范围。 控制第二斩波器和振荡光栅的移动以交替地通过采样和参考光谱，以便由检测器检测并阻止所有辐射。 检测到的信号由适当的电子设备和计算机进行处理。 电子设备还可以控制振荡光栅和斩波器的运动。 提供了一组具有明显不同的样品与参比光束比的分光镜，以增加分光光度计的多功能性。

公开(公告)号：US5357343A

公开(公告)日：1994-10-18

申请号：US951607

申请日：1992-09-28

Applicant: Alan J. Lowne ,  James R. Sandifer ,  David S. Uerz ,  Steven C. Switalski ,  Hsue-Yang Liu

Inventor： Alan J. Lowne ,  James R. Sandifer ,  David S. Uerz ,  Steven C. Switalski ,  Hsue-Yang Liu

IPC: G01J3/42 ,  G01J1/44 ,  G01J3/08 ,  G01J3/28 ,  G01J3/51 ,  G01N21/31 ,  G01N21/35 ,  G02B26/04 ,  G01N21/25 ,  G01J3/00

CPC classification number: G01J3/42 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0232 ,  G01J3/0235 ,  G01J3/0289 ,  G01J3/08 ,  G01J3/44 ,  G01N21/314 ,  G02B26/04 ,  G01J2001/4242 ,  G01J2003/1213 ,  G01J2003/2866 ,  G01N2021/3133 ,  G01N2021/3159 ,  G01N2021/3174 ,  G01N2021/4742 ,  G01N21/359 ,  G01N2201/0826 ,  G01N2201/1283

Abstract: A spectrophotometer is described, comprising a single light source, a single detector, optics for dually and alternatively reading a sample and a reference, and only one moving part. That moving part is a chopper containing multiple pass-through apertures, each filled with a unique bandpass filter to select wavelengths to specifically illuminate the sample or reference. To inform the spectrophotometer whether and when it is reading the sample or the reference, trigger means are provided in at least twice the number of the pass-through apertures.

Abstract translation: 描述了一种分光光度计，其包括单个光源，单个检测器，用于双重和可选地读取样品和参考的光学器件，以及仅一个移动部件。 该移动部件是包含多个通孔的斩波器，每个充满了独特的带通滤波器，以选择波长以特定照亮样品或参考。 为了通知分光光度计是否以及何时读取样品或参考，触发装置至少提供两倍于通过孔的数量。

公开(公告)号：US5287423A

公开(公告)日：1994-02-15

申请号：US647631

申请日：1991-01-31

Applicant: Michael Anthony

Inventor： Michael Anthony

IPC: G01J3/08 ,  G01N21/25 ,  G02B6/36 ,  G02B7/26

CPC classification number: G01J3/08 ,  G01N21/255 ,  G02B6/3604

Abstract: The present invention is a multiplexer for use with an apparatus for optically analyzing a sample. This multiplexer includes a body portion having a primary inlet port. The light received through the light inlet port is sent through a first fiber optic bundle which may be rotated by a fiber carriage to any of several outlet fiber couplers which may be connected to various samples. A position optical sensor assures proper alignment between the first fiber optic bundle and the fiber couplers by sensing the position of a chopper disc which is mounted to the rotating fiber carriage. Once light is passed through the sample, it is passed back into the multiplexer through inlet fiber couplers. These additional fiber couplers are linked to a second fiber optic bundle leading to a detector fiber coupler which may be connected to a fixed fiber cable.

Abstract translation: 本发明是一种与用于光学分析样品的装置一起使用的多路复用器。 该多路复用器包括具有主入口的主体部分。 通过光入口接收的光被传送通过第一光纤束，其可以被纤维托架旋转到可以连接到各种样品的多个出口光纤耦合器中的任何一个。 位置光学传感器通过感测安装到旋转的纤维托架上的斩波盘的位置来确保第一光纤束和光纤耦合器之间的正确对准。 一旦光通过样品，它将通过入口光纤耦合器传回多路复用器。 这些额外的光纤耦合器被连接到通向可以连接到固定光纤电缆的检测器光纤耦合器的第二光纤束。

公开(公告)号：US5206701A

公开(公告)日：1993-04-27

申请号：US764146

申请日：1991-09-20

Applicant: James L. Taylor ,  Ronald L. Cutshall ,  Ernest H. Baughman

Inventor： James L. Taylor ,  Ronald L. Cutshall ,  Ernest H. Baughman

IPC: G01J3/08 ,  G01N21/25 ,  G01N21/27

CPC classification number: G01J3/08 ,  G01N21/255 ,  G01N2021/1751 ,  G01N21/276 ,  G01N21/359 ,  G01N2201/084

Abstract: An apparatus is provided for obtaining spectral information and quantifying the physical properties of a sample. The apparatus comprises a light source and a high-efficiency fiber optic switch means communicating with the light source for directing the light alternatively along at least two channels, the two channels comprising at least one reference channel and at least one sample channel. A sample means communicates with the sample channel for providing an interface between the light and the sample. A fiber optic means comprising a high-efficiency fiber optic switch and/or an optical coupler communicates with the sample channels and the reference channels and directs the light alternatively from the reference and sample channels to a mode scrambler. A wavelength discrimination device separates the light from the mode scrambler into component wavelengths and provides spectral information for the determination of the physical properties of the sample. The apparatus of the present invention provides superior chemometric prediction accuracy, is reliable, durable, and stable over time, and provides outstanding performance in a manufacturing or field environment.

Abstract translation: 提供了一种用于获得光谱信息并量化样品的物理性质的装置。 该装置包括光源和与光源通信的高效光纤开关装置，用于沿至少两个通道交替引导光，该两个通道包括至少一个参考通道和至少一个采样通道。 样品装置与样品通道通信，以提供光和样品之间的界面。 包括高效光纤开关和/或光耦合器的光纤装置与采样通道和参考通道通信，并将光从参考和采样通道交替引导到模式扰频器。 波长识别装置将来自模式扰频器的光分离成分量波长，并提供用于确定样品的物理性质的光谱信息。 本发明的装置提供优异的化学计量预测精度，可靠，耐用，且随时间稳定，并且在制造或现场环境中提供优异的性能。

公开(公告)号：US4577966A

公开(公告)日：1986-03-25

申请号：US578758

申请日：1984-02-09

Applicant: Yoshiro Fukasawa

Inventor： Yoshiro Fukasawa

IPC: G01J1/44 ,  G01J3/08 ,  G01J3/42

CPC classification number: G01J3/08 ,  G01J3/42 ,  G01J2001/4242 ,  G01N2201/12792

Abstract: A double-beam spectrophotometer for spectral analysis of a sample in the infrared region is provided in which to eliminate errors in measurement of the absorbance of the sample caused by undesired thermal radiation from the sample itself, first and second sectors are used for division and recombination of beam paths and coordinated such that a detector which receives a beam along the combined beam path produces output signals consisting of components having a frequency f associated with the cycle of operation of the sectors and components having a frequency 2f, those components having frequencies f and 2f are independently derived out of the detector output signals, and the ratio of the components is computed, thereby obtaining the ratio of intensity of sample beam to reference beam independent of the undesired thermal radiation.

Abstract translation: 提供了用于红外区域中的样品的光谱分析的双光束分光光度计，其中消除了由来自样品本身的不期望的热辐射引起的样品的吸光度的测量误差，第一和第二扇区用于分离和重组 并且被协调使得沿着组合光束路径接收光束的检测器产生由具有频率f的分量组成的输出信号，所述分量具有频率f，该频率f与扇区和具有频率2f的分量的操作周期相关联，那些分量具有频率f和 2f被独立地从检测器输出信号中导出，并且计算分量的比率，由此获得独立于不期望的热辐射的采样光束与参考光束的强度之比。

公开(公告)号：US4291985A

公开(公告)日：1981-09-29

申请号：US118307

申请日：1980-02-04

Applicant: Masatoshi Tsujimura

Inventor： Masatoshi Tsujimura

IPC: G01J3/08 ,  G01J3/51 ,  G01N21/47 ,  G01N21/27 ,  G01J3/50

CPC classification number: G01J3/08 ,  G01J3/0251 ,  G01J3/501 ,  G01J3/51 ,  G01N21/474

Abstract: A photometer comprising a light source, a rotating plate provided with a plurality of filter means having different wave lengths, a reference plate and a sample means, said rotating plate disposed between said light source and said reference plate and sample means, and a half-mirror and a reflection plate located between said light source and said rotating plate, said half-mirror and reflection plate being disposed so as to form a first light passage adapted to extend to the reference plate, and a second light passage adapted to extend to the sample means, whereby alternate radiation through one of said filter means against the reference plate and the sample means is made by the rotation of said rotary plate.

Abstract translation: 一种光度计，包括光源，设置有具有不同波长的多个滤光器装置的旋转板，参考板和采样装置，所述旋转板设置在所述光源和所述参考板和采样装置之间， 反射镜和位于所述光源和所述旋转板之间的反射板，所述半透半反镜和反射板被设置成形成适于延伸到参考板的第一光通道，以及适于延伸到所述第二光通路的第二光通路 通过所述旋转板的旋转，通过所述过滤器装置中的一个相对于参考板和样品装置的交替辐射来制造样品装置。

公开(公告)号：US4168910A

公开(公告)日：1979-09-25

申请号：US900462

申请日：1978-04-27

Applicant: Thomas W. Barnard

Inventor： Thomas W. Barnard

IPC: G01J1/04 ,  G01J3/08 ,  G01N21/01 ,  G01N21/31 ,  G01J3/42 ,  G05D25/00

CPC classification number: G01N21/3103

Abstract: An improved optical chopper, developed particularly for use in a double beam atomic absorption spectrophotometer, receives light beams from two separate sources and sequentially switches them into two separate paths and instantly thereafter the second light beam enters the first path, followed immediately by the first beam entering the second output path and then the second beam entering the second path; alternatively, the chopper is arranged so that the first light beam enters the first output path followed by the first light beam entering the second output path, and then the second light beam enters the first path and the second light enters the second path; also, during one segment of the choppers cycle, both beams are blocked from both output paths.

Abstract translation: 特别用于双光束原子吸收分光光度计的改进的光学斩波器接收来自两个独立光源的光束并且顺序地将它们切换成两个分离的路径，并且此后第二光束进入第一路径，紧接着是第一光束 进入第二输出路径，然后进入第二波束进入第二路径; 或者，斩波器被布置成使得第一光束进入第一输出路径，随后是第一光束进入第二输出路径，然后第二光束进入第一路径，第二光线进入第二路径; 同样，在斩波器周期的一个段期间，两个波束都被阻挡在两个输出路径上。

公开(公告)号：US3971921A

公开(公告)日：1976-07-27

申请号：US540604

申请日：1975-01-13

Applicant: David E. Schmit ,  Frank L. Wedig, Jr.

Inventor： David E. Schmit ,  Frank L. Wedig, Jr.

IPC: G01S3/789 ,  G01S7/292 ,  G01S17/88 ,  G01J3/42 ,  G01J3/08

CPC classification number: G01S17/88 ,  G01S3/789 ,  G01S7/2923

Abstract: An optical scanner having a narrow instantaneous field of view optically scans an entire field of view to determine if a particular source of optical radiation is in the field of view. A first detector responds to energy of a source imaged by the scanner and derives a first signal having an amplitude versus time variation that is a convolution of dispersed spectral energy from the source. A second detector, displaced by a predetermined distance from the first detector, responds to substantially only one predetermined wavelength of the energy of the imaged source. In response to the energy from the second detector being above a predetermined amplitude, a waveform recognition network responsive to the first signal is enabled. The recognition network includes a circuit for detecting the amplitude of the peak value of an initial undulation of the first signal. In response to the detected peak being above a threshold value, the amplitude of the first signal is compared at a plurality of different time intervals following the initial peak with predetermined maximum and minimum percentages of the detected peak value. In response to the first signal falling between the maximum and minimum values during at least some of the different time intervals, a signal is derived to indicate that the particular source of optical radiation has been detected.

Abstract translation: 具有窄的瞬时视场的光学扫描器光学地扫描整个视野以确定特定的光辐射源是否处于视野范围内。 第一检测器响应由扫描仪成像的源的能量，并且导出具有幅度对时间变化的第一信号，其是来自源的分散光谱能量的卷积。 从第一检测器移位预定距离的第二检测器基本上响应成像源的能量的一个预定波长。 响应于来自第二检测器的能量高于预定幅度，响应于第一信号的波形识别网络被启用。 识别网络包括用于检测第一信号的初始波动的峰值的振幅的电路。 响应于检测到的峰值高于阈值，在初始峰值之后的多个不同时间间隔处比较第一信号的振幅，其中检测到的峰值具有预定的最大和最小百分比。 响应于在不同时间间隔的至少一些期间落在最大值和最小值之间的第一信号，导出信号以指示已经检测到特定的光辐射源。

公开(公告)号：US3825762A

公开(公告)日：1974-07-23

申请号：US31229572

申请日：1972-12-05

Applicant: WHITE J

Inventor： WHITE J

IPC: G01J3/08 ,  G01J3/28 ,  G01J3/44 ,  G01N21/52

CPC classification number: G01J3/4406 ,  G01J3/08 ,  G01J2003/2866

Abstract: A luminescence spectrophotometer having an excitation monochromator and a dual channel emission monochromator which receives light through one channel to form a monochromatic calibration beam. The beam is then split into two parts. One part is directed to a first detector having known wavelength response characteristics, and the second part is sent back through the other monochromator channel to a second detector. The ratio of these detector outputs is measured to determine the relative transmission and sensitivity of the luminescence system at each wavelength. Monochromatic light from the excitation monochromator also is split into two parts, with one going to a sample of luminescent material and the other going to the first detector alternately with the first part of the calibration beam. The emitted light from the sample and the second part of the calibration beam are directed to opposite sides of a rotating chopper and then alternately through the second monochromator channel to the second detector. The readings from the two detectors are combined in an electrical circuit to obtain a ratio that is a function of the ratio of luminescent to excitation intensities and is independent of source brightness and detector sensitivity.

Abstract translation: 具有激发单色仪和双通道发射单色仪的发光分光光度计，其通过一个通道接收光以形成单色校准光束。 然后将梁分成两部分。 一部分被引导到具有已知波长响应特性的第一检测器，并且第二部分通过另一个单色仪通道被送回第二检测器。 测量这些检测器输出的比率以确定发光系统在每个波长处的相对透射率和灵敏度。 来自激发单色仪的单色光也被分成两部分，其中一个进入发光材​​料的样品，另一个与校准光束的第一部分交替地进入第一检测器。 来自样品的发射光和校准光束的第二部分被引导到旋转斩光器的相对侧，然后交替地穿过第二单色仪通道到第二检测器。 来自两个检测器的读数被组合在电路中以获得作为发光与激发强度的比率的函数的比率，并且与源亮度和检测器灵敏度无关。

公开(公告)号：US3784307A

公开(公告)日：1974-01-08

申请号：US3784307D

申请日：1970-11-16

Applicant: PHILIPS CORP

Inventor： JACKSON J ,  DONAT BRADSHAW R

IPC: G01J3/427 ,  G01J3/08 ,  G01J3/447 ,  G01N21/03 ,  G01N21/21 ,  G01N21/31 ,  G01N21/22

CPC classification number: G01N21/314 ,  G01N21/03 ,  G01N21/21

Abstract: A method and apparatus for monitoring the presence of water vapor in helium features providing two narrow infrared frequency band within and outside a water vapor absorption band, alternately projecting the two bands of infrared radiation into the helium by using the polarization properties of the infrared radiation, and subsequently detecting the two infrared bands and comparing their amplitudes. Besides providing an accurate and reliable measurement, the invention is compact and requires no moving mechanical parts.

Abstract translation: 一种用于监测氦特征中水蒸汽存在的方法和装置，其在水蒸汽吸收带内和外部提供两个窄红外频带，通过使用红外辐射的偏振特性将两个红外辐射带交替地投射到氦气中， 并随后检测两个红外波段并比较其幅度。 除了提供准确可靠的测量之外，本发明是紧凑的，不需要移动的机械部件。