中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

44 records (took 0.017 seconds)

    Multispectral reflectometer
    41.
    发明公开
    Multispectral reflectometer 失效
    Multispektrales Reflektometer。

    公开(公告)号：EP0440443A2

    公开(公告)日：1991-08-07

    申请号：EP91300715.9

    申请日：1991-01-30

    Applicant: SEQUA CORPORATION

    Inventor： Stearns, Thornton ,  Sarkar, Subhash

    IPC: G01N21/47

    CPC classification number: G01J3/42 ,  G01J3/0221 ,  G01J3/1838 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2003/421 ,  G01J2003/425 ,  G01N21/474 ,  G01N2021/4742

    Abstract: A reflectometer (10) for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer (10) is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample (30) to be measured is illuminated by a focused light source (120) at an angle of 45° to its surface. The light diffusely reflected about the normal to the sample (30) falls on a small round bundle (200), the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit (230) for a concave holographic diffraction grating (230) spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.

    Abstract translation: 一种用于通过漫反射器测量光谱的选定区域中的光的吸收的反射计（10）。 反射计（10）适于精确地测量由体液中存在的组分产生的吸收。 要被测量的样品（30）被聚焦光源（120）以与其表面成45度的角度照射。 围绕样品（30）的法线漫反射的光落在小的圆形束（200）上，纤维被布置成窄的矩形。 该矩形形成用于在适合于在胶片上或在离散检测器阵列上记录光谱的平坦场上光谱分离的凹面全息衍射光栅（230）的入口狭缝（230）。

    Respiratory CO2 detector circuit with high quality waveform
    43.
    发明公开
    Respiratory CO2 detector circuit with high quality waveform 失效
    电路在Atemwegkohlendioxid检测装置高质量的波形。

    公开(公告)号：EP0271109A2

    公开(公告)日：1988-06-15

    申请号：EP87118352.1

    申请日：1987-12-10

    Applicant: THE PERKIN-ELMER CORPORATION

    Inventor： Mount, Bruce E. ,  Becker, Douglas P.

    IPC: G01N21/35 ,  G01N21/27 ,  A61B5/00

    CPC classification number: G01N21/3504 ,  G01J2001/182 ,  G01J2001/444 ,  G01N21/27 ,  G01N33/497 ,  G01N2201/069 ,  G01N2201/127

    Abstract: A respiratory CO₂ detector (10) comprising an infrared lamp source (44) and an infrared detector (50) responsive thereto forming an optical path for detecting the change in CO₂ concentration, or an obstruction in a cuvette (42). The output of the infrared detector (50) provides a continuous high and low voltage signal to be applied to a feedback control loop (12) and to an output circuit (14).
    The feedback control loop (12) includes a peak detector (22), a contamination detector (24), a pulse­-width modulator (26) and a low pass filter (28), the latter providing a DC bias on the infrared lamp (44). The peak detector (22) is connected to the pulse-width modulator (26) to maintain the lamp voltage constant and is connected to comparators (56,62) to compare both outputs of the peak and contamination detectors (22,24). The contamination detector (24) will respond to blockage in the cuvette (42).
    The output control circuit (14) includes a sample-and-hold circuit (30) to direct the high and low voltage signal from the detector to a subtractor (32), the output of which is then inverted to provide a high quality waveform.

    Abstract translation: 一种呼吸CO 2检测器（10），在红外线灯源（44）和上红外探测器（50），响应于此，以形成用于检测二氧化碳浓度的变化的光路，或阻塞在比色杯中（42），其包括。 红外线检测器（50）的输出提供在输出电路（14）被施加到一个反馈控制回路（12）以及在连续高和低电压信号。 反馈控制回路（12）包括一个峰值检测器（22），污染检测器（24），一个脉冲宽度调制器（26）和一个低通滤波器（28），后者提供对红外灯的DC偏置（ 44）。 峰值检测器（22）连接到脉冲宽度调制器（26），以维持灯电压恒定，并且连接到比较器（56,62）比较的峰值和污染检测器（22,24）的两个输出端。 污染检测器（24）将响应于比色皿（42）堵塞。 输出控制电路（14）包括一个采样和保持电路（30），以引导来自检测器的高和低电压信号到减法器（32），所有的输出，然后将其反转，以提供高品质的波形。

Patent Agency Ranking