Digital FTIR spectrometer
    1.
    发明申请
    Digital FTIR spectrometer 有权
    数字FTIR光谱仪

    公开(公告)号:US20050243325A1

    公开(公告)日:2005-11-03

    申请号:US11179586

    申请日:2005-07-13

    IPC分类号: G01J3/453 G01B9/02

    CPC分类号: G01J3/453

    摘要: The present invention relates to an FTIR spectrometer comprising a single-element detector to analyze a detector light beam emitted by a sample, with a unit to digitize the voltage available at the detector output and with a unit to process the digitized voltage. The single-element detector and the dedicated unit to digitize the detector voltage are located immediately adjacent to each other.

    摘要翻译: 本发明涉及一种FTIR光谱仪,其包括用于分析由样品发射的检测器光束的单元件检测器,具有将检测器输出处可用的电压数字化的单元以及处理数字化电压的单元。 单元检测器和用于数字化检测器电压的专用单元彼此紧邻。

    Semiconductor foil beam-splitter for an infrared spectrometer
    2.
    发明授权
    Semiconductor foil beam-splitter for an infrared spectrometer 失效
    用于红外光谱仪的半导体箔分束器

    公开(公告)号:US5587831A

    公开(公告)日:1996-12-24

    申请号:US156430

    申请日:1993-11-23

    IPC分类号: G02B1/00 G02B27/10 G02B1/10

    摘要: In a self-supporting beam-splitter (1), in particular for use in an FTIR-spectrometer for the far-infrared region, with an optical thickness on the order of the interesting wavelength region, the foil beam-splitter (1) consists of an undoped semi-conducter material or carbon which is transparent in the far-infrared, and is preferentially made from thin silicon sheets or diamond foil in the thickness region between 2 .mu.m and 125 .mu.m. In this fashion, an extremely high efficiency for the beam-splitter is achieved, whereby little or no resonant absorption takes place due to the beam-splitter in the interesting wavelength region.

    摘要翻译: 在自支撑分束器(1)中,特别是用于远红外区域的FTIR光谱仪,其光学厚度为感兴趣波长区域的数量级,箔片分离器(1)由 的未掺杂的半导体材料或在远红外线中是透明的碳,并且优选由厚度为2μm至125μm之间的薄硅片或金刚石薄片制成。 以这种方式,实现了分光器的非常高的效率,由于在有趣的波长区域中的分束器,很少或没有发生共振吸收。

    Sample holder for optical spectrometer and method for taking a spectrum
    3.
    发明授权
    Sample holder for optical spectrometer and method for taking a spectrum 失效
    用于光谱仪的样品座和采集光谱的方法

    公开(公告)号:US5171995A

    公开(公告)日:1992-12-15

    申请号:US764619

    申请日:1991-09-24

    IPC分类号: G01N21/03 G01N30/74 G01N35/00

    摘要: A sample holder for placing a sample substance for transmission measurements with optical radiation into a spectrometer, in particular, a FTIR spectrometer which is at least partially made from a material transparent to the optical radiation in a intermeshing wavelength region and which exhibits an index of refraction in excess of 1 is configured as a converging lens with a concave surface (11) and a convex surface (12). To take an absorption spectrum of a powder and/or fluid dissolved or suspended sample substance, the sample substance is brought onto the concave surface (11) of the sample holder before the measurement where it, in consequence of the curvature and in contrast to a flat surface, is concentrated in a substantially smaller surface region. The configuration of the sample holder as a converging lens increases the yield of the radiation penetrating through the sample substance onto the detector of the spectrometer configuration.

    摘要翻译: 用于将用于具有光学辐射的透射测量的样品物质放置在光谱仪中的样品架,特别是FTIR光谱仪,其至少部分地由在相互啮合的波长区域内的光辐射透明的材料制成并且具有折射率 超过1被配置为具有凹面(11)和凸面(12)的会聚透镜。 为了获得粉末和/或流体溶解或悬浮的样品物质的吸收光谱,在测量之前将样品物质带到样品保持器的凹面(11)上,其中由于曲率而与 平坦的表面集中在基本上较小的表面区域。 作为会聚透镜的样品架的构造增加了穿透样品物质的辐射的产量到光谱仪配置的检测器上。

    Spectrometer with dynamically coded components
    4.
    发明授权
    Spectrometer with dynamically coded components 失效
    光谱仪具有动态编码的组件

    公开(公告)号:US5557544A

    公开(公告)日:1996-09-17

    申请号:US164390

    申请日:1993-12-09

    摘要: In an analytic spectrometer (50) having a central computer (9), permanently installed and exchangeable components (5), such as a radiation source, a detector, a beam splitter, a filter, external measurement probes and the like, each of which exhibiting a readable data carrier (7) with encoded data of parameters characterizing the respective component (5), the data media (7) can be written to and contains changeable time dependent data concerning the history and/or the actual properties of the corresponding component (5) for example length of operation, performance deterioration parameters or calibration curves of the component (5). These data can be continuously adjusted by the central computer (9) to the current state of the component (5) so that the data medium (7) connected to the component (5) can immediately supply information concerning the current actual properties of the component (5) when installing the component (5) in another spectrometer.

    摘要翻译: 在具有中央计算机(9)的分析光谱仪(50)中,永久安装和可交换的部件(5),例如辐射源,检测器,分束器,过滤器,外部测量探针等,其中每个 展示具有表征相应组件(5)的参数的编码数据的可读数据载体(7),数据介质(7)可被写入并包含关于相应组件的历史和/或实际属性的可变时间相关数据 (5)例如组件(5)的操作长度,性能劣化参数或校准曲线。 这些数据可以由中央计算机(9)连续调整到组件(5)的当前状态,使得连接到组件(5)的数据介质(7)可以立即提供关于组件的当前实际属性的信息 (5)将组件(5)安装在另一个光谱仪中时。

    Infrared Fourier transformation spectometer with plural
analog-to-digital converters and interleaved amplification factors
    5.
    发明授权
    Infrared Fourier transformation spectometer with plural analog-to-digital converters and interleaved amplification factors 失效
    具有多种模拟数字转换器和交互放大因子的红外FOURIER变换测头

    公开(公告)号:US5202686A

    公开(公告)日:1993-04-13

    申请号:US602172

    申请日:1990-10-23

    IPC分类号: G01J3/453 H03M1/18

    CPC分类号: G01J3/453 H03M1/188

    摘要: An infrared Fourier transformation spectrometer comprising a non-linear analog-to-digital converter device having at least one amplifier and one sample and hold circuit connected downstream thereof, as well as an an analog-to-digital converter following the latter, wherein an input signal to be converted is to be supplied to one input of the amplifier and the gain of the input signal is a function of the magnitude fo the input signal, and wherein the output signal of the analog-to-digital converter is evaluated giving regard to the respective gain, is characterized by the fact that at least two analog-to-digital converters are provided whose outputs are connected to a first controllable switching arrangement for supplying selectively the output signals of one of the said analog-to-digital converters to another evaulation means and that the input signal is supplied to each of the said analog-to-digital converters amplified by a different amplification factor. This allows to achieve high resolution by simple means.

    摘要翻译: 一种红外傅里叶变换光谱仪,包括具有至少一个放大器和连接在其下游的一个采样和保持电路的非线性模数转换器装置,以及跟随其后的模数转换器,其中输入 将要转换的信号被提供给放大器的一个输入端,并且输入信号的增益是输入信号的幅度的函数,并且其中评估模数转换器的输出信号,考虑到 相应的增益的特征在于提供至少两个模数转换器,其输出连接到第一可控开关装置,用于选择性地将所述模数转换器之一的输出信号提供给另一个 并且输入信号被提供给通过不同的放大因子放大的每个所述模数转换器。 这允许通过简单的手段实现高分辨率。

    Correction of non-linearities in detectors in fourier transform
spectroscopy
    6.
    发明授权
    Correction of non-linearities in detectors in fourier transform spectroscopy 失效
    傅立叶变换光谱中检测器的非线性校正

    公开(公告)号:US4927269A

    公开(公告)日:1990-05-22

    申请号:US304697

    申请日:1989-01-31

    申请人: Axel Keens Arno Simon

    发明人: Axel Keens Arno Simon

    IPC分类号: G01J3/45

    CPC分类号: G01J3/45

    摘要: An interferogram is formed as in the prior art by dividing a beam of radiation from the source into two beams and interfering these beams so as to form an interferogram on the detector. A Fourier transform is then made of this interferogram. This transform has a signal spectrum above the cutoff frequency of the detector; and because of non-linearities in the detector and in the electronic signal processing circuitry, this transform also has a spectrum below the cutoff frequency of the detector. In accordance with the invention, two correction factors are calculated from this Fourier transform and these correction factors are then used to calculate a corrected interferogram. The first correction factor is evaluated by determining from the portion of the spectrum below the cutoff frequency a valve for the spectral signal at zero frequency. In addition, the integral of the square of the spectrum signal above the cutoff frequency is determined and the correction factor is found by dividing the signal at zero frequency by the integral of the square of the spectrum above the cutoff. The second correction factor is a function of the first correction factor and the integral of the spectrum signal above cutoff. These two corrections factors are then used in calculating a second order approximation to a corrected interferogram. Finally to produce the corrected Fourier transform, a Fourier transformation is made.

    摘要翻译: 通过将来自源的辐射束分成两束并干涉这些光束以形成在现有技术中形成干涉图,以便在检测器上形成干涉图。 然后由该干涉图进行傅里叶变换。 该变换的信号频谱高于检测器的截止频率; 并且由于检测器和电子信号处理电路中的非线性,该变换也具有低于检测器的截止频率的频谱。 根据本发明,从该傅里叶变换计算出两个校正因子,然后使用这些校正因子来计算校正的干涉图。 通过从零频率处的频谱信号的频谱的截止频率以下的频谱的部分确定来评估第一校正因子。 此外,确定高于截止频率的频谱信号的平方的积分,并且通过将零频率处的信号除以高于截止频率的频谱的平方的积分来确定校正因子。 第二校正因子是第一校正因子和高于截止频谱信号的积分的函数。 然后将这两个校正因子用于计算校正干涉图的二阶近似。 最后,为了产生经校正的傅里叶变换,进行傅里叶变换。

    Device for collecting samples
    7.
    发明授权
    Device for collecting samples 失效
    收集样品的装置

    公开(公告)号:US4827134A

    公开(公告)日:1989-05-02

    申请号:US119704

    申请日:1987-11-12

    摘要: As a means for connecting a gas chromatograph and an IR-spectrometer, devices are used which include a cooled carrier which allows to condensate the substances supplied by the gas chromatograph on its surface where they may be examined by spectroscopy. The examination of a new sample makes necessary the evaporation of the substances condensated on this surface before. Up to now, the heating and the cooling of the carrier which was necessary to this end, took a rather long time. Further, the heating of the carrier was limited to a temperature at which not all substances could be completely eliminated from the surface of the carrier. Now, the invention provides for a thermal decoupling of the carrier from the cooling device. Such decoupling allows to heat the carrier to higher tempreatures and to reduce the time needed for performing a measuring cycle, since as a result of the decoupling the cooling device is not heated but the heating is limited to the small mass of the carrier. A removable coupling may be effected by means of a thermally conducting mechanical connection which may be separated, of a gas stream which may be interrupted, or of moving the carrier from a cooling zone to a heating zone.

    摘要翻译: 作为连接气相色谱仪和IR光谱仪的手段,使用的装置包括冷却的载体,其允许将气相色谱仪提供的物质在其表面上进行光谱分析。 对新样品的检查需要先蒸发在此表面上冷凝的物质。 到目前为止,为此目的需要的载体的加热和冷却花了相当长的时间。 此外,载体的加热限于不能从载体表面完全除去所有物质的温度。 现在,本发明提供了载体与冷却装置的热解耦。 这种去耦允许将载体加热到更高的温度并且减少执行测量循环所需的时间,因为由于去耦的结果,冷却装置不被加热,而是加热被限制在载体的小质量上。 可移动联接可以通过可能被间断的气流的导热机械连接或将载体从冷却区移动到加热区来实现。

    Method for measuring a spectrum of a sample by means of an infrared spectrometer and infrared spectrometer of this type
    8.
    发明申请
    Method for measuring a spectrum of a sample by means of an infrared spectrometer and infrared spectrometer of this type 审中-公开
    通过红外光谱仪和红外光谱仪测量样品光谱的方法

    公开(公告)号:US20050259250A1

    公开(公告)日:2005-11-24

    申请号:US11130435

    申请日:2005-05-16

    申请人: Arno Simon

    发明人: Arno Simon

    摘要: A method for measuring a spectrum of a sample by means of an infrared spectrometer is described, the spectrometer comprising at least one component whose operating behavior is influenced by at least one operating parameter which, in the event of a change, changes the operating behavior of the at least one component and thereby influences the spectrum to be measured, the method comprising detecting the at least one operating parameter at least once during the measurement of the spectrum, reckoning back the operating behavior of the at least one component in a manner dependent on the detected operating parameter to a predetermined reference value of the operating parameter, and further conducting at least one of the following steps: measuring the spectrum on the basis of the predetermined reference value of the operating parameter, correcting the spectrum on the basis of the predetermined reference value of the operating parameter.

    摘要翻译: 描述了通过红外光谱仪测量样品的光谱的方法,该光谱仪包括至少一个组件,其操作行为受到至少一个操作参数的影响,在操作参数的变化中,改变操作参数的操作行为 所述至少一个组件并因此影响待测​​量的频谱,所述方法包括在所述频谱的测量期间至少检测所述至少一个操作参数,以依赖于所述至少一个组件的方式推算所述至少一个组件的操作行为 检测到的操作参数到操作参数的预定参考值,并进一步进行以下步骤中的至少一个:基于操作参数的预定参考值测量频谱,基于预定的参数值校正频谱 运行参数的参考值。

    Optical spectrometer and method of implementing optical spectroscopy
    9.
    发明授权
    Optical spectrometer and method of implementing optical spectroscopy 失效
    光谱仪和实现光谱的方法

    公开(公告)号:US5963322A

    公开(公告)日:1999-10-05

    申请号:US27901

    申请日:1998-02-23

    IPC分类号: G01J3/453 G01B9/02

    CPC分类号: G01J3/4535 G01J3/453

    摘要: An optical spectrometer (1) with an interferometer having a means for varying the optical path difference comprising a drive (8), and with a detector (6) for recording optical signals from the interferometer and converting them into electrical analog signals, wherein an analog-to-digital converter (ADC) (9) is connected to the detector (6) digitizing the electrical analog signals in a time-equidistant manner, is characterized in that the data acquisition electronics (17) are supplied by a switched power supply (14), the clock of which is derived from the same reference oscillator (16) as the clock of the signal digitization by the ADC (9). In contrast to known spectrometers with spatially equidistant sampling of the detector signal, the design of the spectrometer according to the invention is considerably cheaper and more compact with respect to its voltage supply elements. Galvanic separation of the data acquisition electronics and the electronic control unit of the linear drive is no longer required.

    摘要翻译: 一种具有干涉仪的光谱仪(1),具有用于改变光程差的装置,包括驱动器(8),以及用于记录来自干涉仪的光信号并将其转换成电模拟信号的检测器(6),其中模拟 数字转换器(ADC)(9)连接到以时间等距的方式对电气模拟信号进行数字化的检测器(6),其特征在于数据采集电路(17)由开关电源 14),其时钟源自与ADC(9)的信号数字化的时钟相同的参考振荡器(16)。 与已知的具有对检测器信号进行空间等距取样的光谱仪相反,根据本发明的光谱仪的设计相当于其电压供应元件便宜得多且更紧凑。 数据采集​​电子元件和线性驱动电子控制单元的电气分离不再需要。