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公开(公告)号：US4464051A
公开(公告)日：1984-08-07
申请号：US354254
申请日：1982-03-02
摘要： Disclosed herein is a spectrophotometer which includes a source of radiation; an optical system for forming a beam of radiation from the source and directing it along a sample path and along a reference path, which paths come together at a location to form a combined path that impinges on a detector; a chopper mounted at said location for successively directing one or the other of the beams along the combined path or providing a blank chopper area for blocking radiation from the combined path; a monochromator having a grating and slits disposed in the combined path, the angular position of the grating being adjustable for passing selected successive wavelengths of radiant energy through the optical system; and controls are provided for controlling the movement of the grating and/or slits so that movement only occurs when the blank chopper area is blocking the combined path.
摘要翻译： 本文公开了一种分光光度计，其包括辐射源; 光学系统，用于形成来自光源的辐射束并且沿着参考路径引导辐射束，这些路径在一个位置聚集在一起以形成撞击检测器的组合路径; 安装在所述位置的斩波器，用于沿着所述组合路径连续引导所述光束中的一个或另一个，或者提供用于阻挡来自所述组合路径的辐射的空白切断器区域; 具有设置在组合路径中的光栅和狭缝的单色仪，所述光栅的角度位置是可调节的，用于通过所述光学系统传递选定的连续波长的辐射能; 并且提供控制以控制光栅和/或狭缝的移动，使得仅当空白切断器区域阻挡组合路径时才发生移动。
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公开(公告)号：US4332470A
公开(公告)日：1982-06-01
申请号：US128289
申请日：1980-03-07
摘要： A light chopper for chopping the monochromatic light beam of a spectrophotometer system, has a rotatable shaft driven by a synchronous motor at a frequency proportional to the power line frequency. An aperture bearing disc rotates with the shaft in relation to a photocell/detector array for generating digital timing signals for use by a microcomputer to control the tasks of the spectrophotometer system in synchronism with line frequency. The microcomputer monitors line frequency for responsively programming a programmable divider for generating an index signal for proportionally sequencing the wavelength of the monochromatic beam through a predetermined spectral range.The rotatable shaft is coupled to the synchronous motor via a mechanical pin drive and a set of attracting magnets which are spaced in face confronting relation at the point of coupling for providing compliance and damping between the coupled shaft and synchronous motor, thus minimizing phase jitter of the timing system and permitting rejection of time frequency stray circuit pickup.
摘要翻译： 用于切割分光光度计系统的单色光束的光斩波器具有由同步电动机以与电力线频率成比例的频率驱动的可旋转轴。 孔轴承盘相对于光电池/检测器阵列与轴一起旋转，用于产生数字定时信号，供微型计算机用于与线路频率同步地控制分光光度计系统的任务。 微型计算机监视线路频率以响应地编程可编程分频器，用于产生索引信号，以对通过预定光谱范围的单色光束的波长进行比例排序。 可旋转轴通过机械销驱动器和一组吸引磁铁联接到同步电动机，这些吸引磁体在联接点处以面对面的关系间隔开，以在联接轴和同步电动机之间提供顺应性和阻尼，从而最小化相位抖动 定时系统和允许拒绝时频杂散电路拾取。
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公开(公告)号：US4305663A
公开(公告)日：1981-12-15
申请号：US125011
申请日：1980-02-27
申请人： Charles V. Perkins , John R. Firth
发明人： Charles V. Perkins , John R. Firth
摘要： A dual beam spectrophotometer includes a radiation chopper, a monochrometer, and a diffraction grating moved by a stepper motor. The chopper includes a gate pulse generator which produces gate pulses G.sub.S and G.sub.R corresponding to periods during which radiation from the source passes through a sample cell and a reference cell respectively. A stepper motor drive circuit produces pulses to step the stepper motor which are synchronized with the chopping cycle by means of the G.sub.R and G.sub.S pulses. The stepper motor is arranged to step an equal number of times in each half of a chopping cycle. A further condition which is preferably satisfied is that the first pulse of a sequence should start in the opposite half of the chopping cycle from that in which the first pulse started in a previous chopping cycle. At low stepping rates the motor will step twice in one chopping cycle and then pause for several cycles before again stepping twice.
摘要翻译： 双光束分光光度计包括辐射斩光器，单色仪和由步进电机驱动的衍射光栅。 斩波器包括门脉冲发生器，其产生对应于来自源的辐射通过样本池和参考单元的周期的栅极脉冲GS和GR。 步进电机驱动电路通过GR和GS脉冲产生脉冲以步进与斩波周期同步的步进电机。 步进电机被布置成在斩波周期的每一半中相等次数。 优选满足的另一个条件是序列的第一个脉冲应该在斩波周期的相反一半开始，其中第一个脉冲在先前的斩波周期中开始。 在低步进率下，电机将在一个斩波周期中步进两次，然后暂停几个周期，然后再次步进两次。
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公开(公告)号：US4268170A
公开(公告)日：1981-05-19
申请号：US76612
申请日：1979-09-18
申请人： Bruce K. Flint
发明人： Bruce K. Flint
摘要： A monochromator has three ports or slits including two entrance slits and an exit slit. A single mirror and a diffraction grating define a first, folded path between an entrance slit on one side of the housing and an exit slit on the opposite side of the housing. The mirror is movable in and out of a second path between the second entrance slit and the grating so that a second path may be completed from the second entrance slit to the grating and thence to the exit slit. Alternatively two of the ports may be used as exit slits and one as an entrance slit.
摘要翻译： 单色器具有包括两个入口狭缝和出口狭缝的三个端口或狭缝。 单个反射镜和衍射光栅在壳体一侧的入口狭缝与壳体相对侧上的出口狭缝之间形成第一折叠路径。 反射镜可以在第二入口狭缝和光栅之间的第二路径中移动和移出，使得可以从第二入口狭缝到格栅完成第二路径，从而到达出口狭缝。 或者，两个端口可以用作出口狭缝，一个用作入口狭缝。
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75.发明授权
公开(公告)号：US4100412A
公开(公告)日：1978-07-11
申请号：US737106
申请日：1976-10-29
申请人： Harry H. Hausdorff
发明人： Harry H. Hausdorff
CPC分类号： G01N21/314 , G01N21/3504 , G01N30/74 , G01J2003/1226 , G01N2021/3129 , G01N2021/3159 , G01N2021/6421 , G01N2030/628 , G01N2030/746 , G01N21/35 , G01N21/3577
摘要： An analytical apparatus is described having a non-dispersive, multiwavelength photometric analyzer which is adapted to provide simultaneous display of chromatography peaks at a plurality of different analytical wavelengths. In a particular arrangement, the apparatus includes a chromatograph for separating a sample to be examined into components.
摘要翻译： 描述了一种具有非分散性，多波长光度分析仪的分析装置，其适于提供在多个不同分析波长下同时显示色谱峰。 在具体的布置中，该装置包括用于将要检查的样品分离成组分的色谱仪。
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公开(公告)号：US4092069A
公开(公告)日：1978-05-30
申请号：US704530
申请日：1976-07-12
CPC分类号： G01N21/27
摘要： A spectrophotometer comprising means for producing electrical signals Er and Es corresponding to reference and measuring beams, respectively; means for multiplying the value Es by a factor k to produce an electrical signal corresponding to the value kEs; means for controlling said signal producing means so as to keep the value (Er + kEs) constant; and means for producing an electrical signal corresponding to the value (Er - kEs), whereby minute changes of the absorbance of a sample can be accurately measured without logarithmic conversion.
摘要翻译： 一种分光光度计，包括分别产生对应于参考和测量光束的电信号Er和Es的装置; 用于将值Es乘以因子k以产生对应于值kE的电信号的装置; 用于控制所述信号产生装置以保持所述值（Er + kE）恒定的装置; 以及用于产生对应于值（Er-kE）的电信号的装置，由此可以在没有对数转换的情况下精确地测量样品的吸光度的微小变化。
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公开(公告)号：US3958882A
公开(公告)日：1976-05-25
申请号：US471847
申请日：1974-05-22
申请人： Jurgen Gast
发明人： Jurgen Gast
摘要： A sample chamber for an optical spectrometer comprising means for selecting one of two modes of operation: a transmission mode or a reflection mode. The mode-selecting means comprise optical elements for switching the path of the optical beam passing through the sample chamber so that the beam either passes through a sample or is incident upon and reflects off of a surface of a sample. Coupled to the path-selecting means are means for moving a sample to the position and orientation relative to the optical beam which is appropriate to the mode of operation selected.
摘要翻译： 一种用于光谱仪的样品室，包括用于选择两种操作模式之一的装置：透射模式或反射模式。 模式选择装置包括光学元件，用于切换通过样品室的光束的路径，使得光束通过样品或入射到样品的表面并从其反射。 与路径选择装置相耦合的装置是用于将样本移动到相对于适于所选择的操作模式的光束的位置和取向的装置。
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公开(公告)号：US3917406A
公开(公告)日：1975-11-04
申请号：US50626674
申请日：1974-09-16
申请人： PERKIN ELMER CORP
发明人： SIEGLER JR E HORACE
CPC分类号： G02B27/143 , G01J3/02 , G01J3/0297 , G01J3/42 , G01N21/255 , G02B27/1086
摘要： A pair of beam splitters for an optical instrument wherein one beam splitter is used to divide source radiation into a sample and reference beam while the second beam splitter recombines the sample and reference beams prior to their entering a monochromator. In order to reduce schlieren effects, each beam splitter is provided with stripes of alternating reflective and transmitting portions. The edges of the stripes of each beam splitter lie wholly within the optical aperture while the ends of the stripes extend outwardly of the optical aperture. The beam splitters are oriented in such a manner that the stripes are orthogonal.
摘要翻译： 一种用于光学仪器的分束器，其中一个分束器用于将源辐射分割成采样和参考光束，而第二分束器在其进入单色仪之前重新组合样品和参考光束。 为了减少纹理效应，每个分束器设置有交替反射和透射部分的条纹。 每个分束器的条纹的边缘完全位于光学孔内，而条纹的端部延伸到光学孔的外侧。 分束器以这样的方式定向，使得条纹是正交的。
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公开(公告)号：US3712738A
公开(公告)日：1973-01-23
申请号：US3712738D
申请日：1971-03-10
申请人： SHIMADZU CORP
发明人： YAMAMOTO H
摘要： An illuminator system for use in a spectrophotometer by which the mode of operation can be easily changed in a simple manner. To this end, means for shielding either of the beams emerged from respective monochromatic beam generators and means for shielding, when said first mentioned means is in the inoperative condition, the other of said beams that has passed through the sector diaphragm. By operating the above mentioned two means, the double wavelength, single beam spectrophotometer can be used as a single wavelength dual beam spectrophotometer and vice versa.
摘要翻译： 一种用于分光光度计的照明器系统，通过该照明器系统可以简单地容易地改变操作模式。 为此，当所述第一提及的装置处于不工作状态时，屏蔽来自各个单色光束发生器的任何一个光束的装置和用于屏蔽的装置，已经通过扇形光阑的所述光束中的另一个。 通过操作上述两种方法，双波长单光束分光光度计可用作单波长双光束分光光度计，反之亦然。
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公开(公告)号：US3542480A
公开(公告)日：1970-11-24
申请号：US3542480D
申请日：1966-08-09
申请人： PERKIN ELMER LTD
发明人： FORD MICHAEL ALAN
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