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1. 发明授权

US5483337A Spectrometer with selectable radiation from induction plasma light source 失效
标题翻译：光谱仪具有来自感应等离子体光源的可选辐射
公开(公告)号：US5483337A
公开(公告)日：1996-01-09
申请号：US325735
申请日：1994-10-19
申请人： Thomas W. Barnard , Michael I. Crockett , Michael W. Hucks
发明人： Thomas W. Barnard , Michael I. Crockett , Michael W. Hucks
IPC分类号： G01N21/73 , G01N21/68 , G01J3/30
CPC分类号： G01N21/68
摘要： An atomic emission spectrometer includes an induction coupled plasma generator and a detector system for detecting the radiation relative to spectral wavelength. A first mirror is on the longitudinal axis of the generator to receive axial radiation therefrom. A second mirror is disposed laterally from the generator so as to reflect radial radiation therefrom parallel to the longitudinal axis toward a third mirror disposed laterally from the longitudinal axis. The third mirror passes the radiation to a fourth mirror positioned adjacent to the axial radiation without interfering therewith so as to reflect the radial radiation to the first mirror. The first mirror is rotated to a first orientation to reflect the axial radiation into the detector system, or to a second orientation to reflect the radial radiation into the detector system.
摘要翻译：原子发射光谱仪包括感应耦合等离子体发生器和用于检测相对于光谱波长的辐射的检测器系统。第一反射镜位于发生器的纵向轴线上以从其接收轴向辐射。从发生器侧向设置第二反射镜，以便将平行于纵向轴线的径向辐射反射到从纵向轴线横向设置的第三反射镜。第三反射镜将辐射传递到邻近轴向辐射定位的第四反射镜，而不与其干涉，以将径向辐射反射到第一反射镜。第一镜被旋转到第一取向以将轴向辐射反射到检测器系统中，或者将第二取向反射到检测器系统中。

2. 发明授权

US4457623A Atomic absorption spectrophotometer providing background correction using the Zeeman effect 失效
标题翻译：原子吸收分光光度计使用塞曼效应提供背景校正
公开(公告)号：US4457623A
公开(公告)日：1984-07-03
申请号：US237199
申请日：1981-02-23
申请人： Walter Bohler , Thomas W. Barnard
发明人： Walter Bohler , Thomas W. Barnard
IPC分类号： G01N21/31 , G01J3/42
CPC分类号： G01N21/3103
摘要： An atomic absorption spectrophotometer having a source, e.g., a hollow cathode lamp, of spectral radiation of a selected narrow band of wavelengths optically directed along an axis through an electrothermic sample atomizer and a field stop to a photoelectric detector. The sample atomizer is subjected to a substantially unipolar AC electromagnetic field having flux lines directed transversely to said axis to effect Zeeman splitting of the radiation into two orthogonally polarized components .pi. and .sigma.. Disposed in the optical path between the atomizer and detector is a stationary beam-splitting polarizer prism oriented so as to transmit the .sigma. polarized component and block the .pi. component. Mirrors are used exclusively in the optical systems so as to minimize the effect of dispersion and stray light.An electromagnet, used to generate the electromagnetic field, is connected to the AC power line in series with the diode and has a small capacitor connected across its coils. This causes the magnetic field at the sample atomizer to vary sinusoidally from a maximum value of one polarity to a very small value of the opposite polarity. The polarizer prism is of unique design in which one polarization passes through undeviated on the optical axis while the other is diverted to one side on the other. The ray passing through the prism along the optical axis is uniquely depolarized upon exiting. A field stop is located between the prism and the atomizer and restricts the field of view of the prism to an angle less than or equal to its restricted field of view, excludes blackbody radiation of the furnace, and limits the aperture at the source.
摘要翻译：具有源（例如空心阴极灯）的原子吸收分光光度计，其具有通过电热样品雾化器沿轴线光学定向的选定的窄带波长的光谱辐射，以及到光电检测器的场停止。样品雾化器经受基本上单极的交流电磁场，其具有横向于所述轴线的通量线，以实现将辐射切割成两个正交极化分量pi和西格玛的塞曼。设置在雾化器和检测器之间的光路中的是固定的分光偏振棱镜，其定向为传递西格玛偏振分量并阻挡pi分量。镜子专门用于光学系统，以便最小化色散和杂散光的影响。用于产生电磁场的电磁铁连接到与二极管串联的AC电力线，并且在其线圈之间连接有小电容器。这使得样品雾化器处的磁场正弦波从一个极性的最大值变化到相反极性的非常小的值。偏振棱镜具有独特的设计，其中一个偏振通过未光轴在光轴上而另一个偏转在另一侧。沿着光轴穿过棱镜的光线在退出时被唯一地去极化。一个场控制器位于棱镜和雾化器之间，并将棱镜的视野限制在小于或等于其受限视场的角度，排除了炉子的黑体辐射，并限制了光源的光圈。

3. 发明授权

US5565983A Optical spectrometer for detecting spectra in separate ranges 失效
标题翻译：用于在不同范围内检测光谱的光谱仪
公开(公告)号：US5565983A
公开(公告)日：1996-10-15
申请号：US451351
申请日：1995-05-26
申请人： Thomas W. Barnard
发明人： Thomas W. Barnard
IPC分类号： G01J1/04 , G01J3/02 , G01J3/18 , G01J3/24 , G01J3/26 , G01J3/32 , G01J3/42 , G02B5/18
CPC分类号： G02B27/4244 , G01J3/02 , G01J3/0229 , G01J3/0232 , G01J3/18 , G01J3/24 , G01J3/32 , G02B5/1814
摘要： A spectrometer includes a pair of crossed reflective gratings to effect a spectrally dispersed beam that is focussed to an array detector. The second grating is a plural grating with a surface formed of a first portion and a second portion. The first portion has a groove density for effecting ultraviolet in the dispersed beam. The second portion has a groove density for effecting visible radiation in the dispersed beam. A shutter blocks or exposes the second portion of the grating surface so as to select the first spectral range or the second spectral range for detection. The plural grating surface preferably may be contoured to compensate for aberrations in focussing of the beam to the detector. A computer may be used for selecting spectral lines for analysis, particularly selecting such lines in the second range that are not interfered with by the first range.
摘要翻译：光谱仪包括一对交叉反射光栅，以实现聚焦于阵列检测器的光谱分散光束。第二光栅是具有由第一部分和第二部分形成的表面的多个光栅。第一部分具有用于在分散光束中实现紫外线的凹槽密度。第二部分具有用于在分散光束中实现可见辐射的凹槽密度。 A快门阻挡或暴露光栅表面的第二部分，以便选择用于检测的第一光谱范围或第二光谱范围。多个光栅表面优选地可以被轮廓化以补偿光束到检测器的聚焦中的像差。可以使用计算机来选择用于分析的谱线，特别是在不受第一范围干扰的第二范围内选择这样的线。

4. 发明授权

US4820048A Detector for a spectrometer 失效
标题翻译：光谱仪检测器
公开(公告)号：US4820048A
公开(公告)日：1989-04-11
申请号：US123025
申请日：1987-11-19
申请人： Thomas W. Barnard
发明人： Thomas W. Barnard
IPC分类号： G01J3/02 , G01J3/18 , G01J3/28 , G01J3/36 , H01L21/66 , H01L27/146 , H01L27/148
CPC分类号： G01J3/1809 , G01J3/2803
摘要： A novel solid state array detector is useful in an optical spectrometer of the type that includes a crossed dispersion system receptive of radiation for producing a pair of two dimensional displays of spectral lines characteristic of at least one atomic element. One display is ultraviolet and the other is visible. A solid-state chip has on the front surface a two dimensional array of photosensitive pixels receptive of radiation of selected spectral lines and proximate background radiation. The pixels are arranged in a plurality of sub-arrays with each sub-array consisting of at least one of the pixels and are positioned at a projection location on the front surface of at least one of the selected spectral lines. Electronic components formed on the chip among the sub-arrays are operatively connected to the pixels for producing readout signals correlating with intensities of the selected spectral lines.

5. 发明授权

US4168910A Optical beam-switching chopper 失效
标题翻译：光束切换斩波器
公开(公告)号：US4168910A
公开(公告)日：1979-09-25
申请号：US900462
申请日：1978-04-27
申请人： Thomas W. Barnard
发明人： Thomas W. Barnard
IPC分类号： G01J1/04 , G01J3/08 , G01N21/01 , G01N21/31 , G01J3/42 , G05D25/00
CPC分类号： G01N21/3103
摘要： 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.
摘要翻译：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。

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