知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

578 records (took 0.013 seconds)

    Apparatus for monitoring the selection of chart recording and wavelength scanning speeds in a radiant energy analyzer
    201.
    发明授权
    Apparatus for monitoring the selection of chart recording and wavelength scanning speeds in a radiant energy analyzer 失效
    用于监测辐射能分析仪中图表记录和波长扫描速度选择的装置

    公开(公告)号：US3942893A

    公开(公告)日：1976-03-09

    申请号：US522607

    申请日：1974-11-11

    Applicant: Allan S. Way

    Inventor： Allan S. Way

    IPC: G01J3/06 ,  G01J3/42

    CPC classification number: G01J3/06

    Abstract: A spectrophotometer system having a first stepper motor driving a wavelength scanning mechanism and a second stepper motor driving a chart recorder, both motors being operative in response to pulses from a system clock. The clock frequency is successively divided by first and second cascaded, switch-selectable sets of frequency dividers. The output of the first divider is applied to the wavelength motor and determines wavelength scan speed. The output of the second divider is applied to the chart motor and determines chart scale expansion. A decoder monitors the frequency selections of the first and second sets of frequency dividers, and upon detection of a frequency selection outside the capability of the chart motor, the decoder provides an output which inhibits both motors. The decoder output additionally actuates a visual indicator to inform an operator of the invalid selection.

    Abstract translation: 一种具有驱动波长扫描机构的第一步进电机和驱动图表记录器的第二步进电机的分光光度计系统，两个电机响应于来自系统时钟的脉冲而工作。 时钟频率由第一级和第二级联的可切换选择的分频器组相继划分。 第一分频器的输出被施加到波长电机并确定波长扫描速度。 第二个分频器的输出应用于图表电机，并确定图表比例扩展。 解码器监视第一和第二组分频器的频率选择，并且在检测到图表电机的能力之外的频率选择时，解码器提供抑制两个电动机的输出。 解码器输出另外启动视觉指示器以通知操作者无效选择。

    Rapid scan identifier for use in infrared absorption spectroscopy
    202.
    发明授权
    Rapid scan identifier for use in infrared absorption spectroscopy 失效
    用于红外吸收光谱的快速扫描识别器

    公开(公告)号：US3711708A

    公开(公告)日：1973-01-16

    申请号：US3711708D

    申请日：1971-02-25

    Applicant: OPTICAL COATING LABORATORY INC

    Inventor： GEIGER D ,  DOLIN S ,  FOLCH A

    IPC: G01J3/02 ,  G01J3/04 ,  G01J3/06 ,  G01J3/26 ,  G01J3/28 ,  G01J3/42 ,  G01N30/74 ,  G01N21/26

    CPC classification number: G01J3/02 ,  G01J3/0202 ,  G01J3/0232 ,  G01J3/04 ,  G01J3/06 ,  G01J3/26 ,  G01J3/2889 ,  G01J3/42 ,  G01N30/74

    Abstract: A rapid scan spectrum identifier fur use in identifying infrared spectrum of the output of a gas chromatograph to identify its absorption characteristics and includes an infrared source and beam splitter, a double beam chopper for alternately sending the infrared beam through a sample or reference gas cell mounted in a suitable furnace, the output of which is recombined and analyzed by a monochromator having a narrow output passband of energy detected by a rapid response detector, the output of which is processed by suitable electronic circuitry to provide a readout. The monochromator is of the scanning type in which a grating is synchronously scanned with a circular variable filter so that the first order output of the grating is selectively passed and higher orders rejected by the filter. The sample and reference gas cell furnace assembly utilizes specially constructed sample and reference gas cells symmetrically mounted in a furnace arrangement for maintaining input gas streams at equal temperatures within each cell and above the temperature of condensation of the sample under investigation. The beam chopper contains associated photoelectronics for physically determining the location of a chopping blade to thereby provide gating signals for indicating the presence at the detector of a sample, reference, or a background signals. These grating signals are used in sample and hold circuits to convert an essentially digitally sampled output into a relatively smooth continuous curve indicative of the absorption of the sample so that the readout represents the sample absorption characteristics corrected for reference for the carrier gas and background effects. The instrument is designed to operate with scan rates of approximately 6 and 30 seconds.

    Abstract translation: 快速扫描光谱标识符用于识别气相色谱仪的输出的红外光谱以识别其吸收特性，并且包括红外源和分束器，用于交替地将红外光束通过样品或参考气体电池安装的双光束斩波器 在合适的炉中，其输出由具有由快速响应检测器检测到的能量的窄输出通带的单色仪重组和分析，其输出由合适的电子电路处理以提供读数。 单色仪是扫描型的，其中光栅与圆形可变滤波器同步扫描，使得光栅的一阶输出被选择性地通过，并且较高阶数被滤光器拒绝。

    Automatic spectrophotometric absorption analyzer
    203.
    发明授权
    Automatic spectrophotometric absorption analyzer 失效
    自动光谱吸收分析仪

    公开(公告)号：US3695764A

    公开(公告)日：1972-10-03

    申请号：US3695764D

    申请日：1970-12-01

    Applicant: PIERRE DELMAS ,  PIERRE IMBERT

    Inventor： DELMAS PIERRE ,  IMBERT PIERRE

    IPC: G01J3/06 ,  G01N21/31 ,  G01J3/42 ,  G01J3/12 ,  G01N21/04

    CPC classification number: G01J3/06 ,  G01N21/314

    Abstract: An automatic spectrophotometric absorption analyzer for continuous determination of a plurality of components of a fluid sample, comprising a monochromator with a diffraction grating receiving the light transmitted by a vessel with transparent faces which contains said sample, a photoelectric converter so arranged that the light beam emerging from the monochromator falls on its sensitive element, a unit for determining cyclically a plurality of stop positions of said diffraction grating which define wavelengths corresponding to the absorption lines of components of said sample, and means for automatic computation of the concentration of said components from the signal which is delivered by the converter.

    Abstract translation: 一种用于连续测定流体样品的多个组分的自动分光光度吸收分析仪，包括具有衍射光栅的单色仪，所述衍射光栅接收由容器透射的光，所述透明面包含所述样品;光电转换器，其布置成使得所述光束出现 单色器落在其敏感元件上，用于周期性地确定所述衍射光栅的多个停止位置的单元，其限定与所述样品的组分的吸收线对应的波长，以及用于自动计算所述组分的浓度的装置， 由转换器传送的信号。

    Monochromator wavelength drives
    205.
    发明授权
    Monochromator wavelength drives 失效
    单色波长波动

    公开(公告)号：US3563656A

    公开(公告)日：1971-02-16

    申请号：US3563656D

    申请日：1966-04-15

    Applicant: CHARLES C HELMS

    Inventor： HELMS CHARLES C

    IPC: G01J3/06 ,  G01J3/18 ,  G01J3/42

    CPC classification number: G01J3/06

    Abstract: A STEPPING-MOTOR (OF THE TYPE WHICH MOVES IN A SERIES OF DISCRETE SMALL INCREMENTS) DRIVES THE DISPERSIVE ELEMENT OF AN OPTICAL MONOCHROMATOR, FOR EXAMPLE, THROUGH A VARIABLE GEAR REDUCTION TRANSMISSION ROTATING A CAMWHICH IN TURN ANGULARLY MOVES A LEVER ARM RIGIDLY CONNECTED TO, SAY, A DIFFRACTION GRATING. THE STEPPING-MOTOR MAY BE MOVED AT VARIOUS CONTINUOUS RATES BY SUPPLYING A SERIES OF EVENLY SPACED (IN TIME) PULSES AT ANY PARTICULAR DESIRED RATE. ALTERNATELY, BY PROVIDING A "BURST" OR "TRAIN" OF A PREDETERMINED NUMBER OF CLOSELY SPACED PULSES, THE STEPPING-MOTOR (AND THE ELEMENTS DRIVEN THEREBY) MAY BE RAPIDLY INDEXED TO A DESIRED SPECIFIC POSITION. ANOTHER INSTRUMENT OR COMPONENT OF THE SAME INSTRUMENT, SUCH AS THE CHART RECORDER OR OTHER READOUT MAY BE READILY SYCHRONIZED WITH THE MONOCHROMATOR STEPPING-MOTOR, BY UTILIZING AS ITS DRIVE A SECOND STEPPING-MOTOR, FED FROM THE SAME PULSE SOURCE.

Patent Agency Ranking