OPTICAL ANALYSER WITH A GRATING-MONOCHROMATOR FOR THE NEAR INFRARED RANGE

    公开(公告)号:CA1184652A

    公开(公告)日:1985-03-26

    申请号:CA398938

    申请日:1982-03-22

    Abstract: : An optical analyser for the near infrared range contains a monochromator arranged in the path of light from a light source in an optical system including detectors as well as a microcomputer. A light-interrupting mechanism and an optical grating-monochromator are used, the optical grating being connected to a sine-mechanism. The optical system includes a mirror for selecting between the transmission and reflection measuring methods, transmission and reflection detectors with light sensors being provided. The temperature of the light sensors is thermostatically controlled and the detectors contain amplifiers connected to the output of the light sensors. The output of the amplifiers is connected to the input of a measuring system containing a band-filter, a demodulator and an A/D converter - all connected in series - while the A/D converter is connected to the microcomputer. The result is improved sensitivity over prior apparatus.

    6.
    发明专利
    未知

    公开(公告)号:FR2502780A1

    公开(公告)日:1982-10-01

    申请号:FR8205168

    申请日:1982-03-26

    Abstract: Optical analyser for the near infrared range for determining the organic components of solid, liquid or gaseous substances, having a light source, a monochromator arranged in the beam path, a light interrupter mechanism, and an optical grating monochromator. The optical grating can be adjusted by means of a sine mechanism. Arranged downstream of the optical system are a mirror which selects the method of transmission or reflection, and a transmission or reflection detector provided with the light detectors. The light detectors are arranged in a thermostat. The detectors contain amplifiers, which are connected to the output of the light detectors and whose outputs are connected to the input of a measuring system containing a series connection of a band pass filter, a demodulator and an A/D converter. The A/D converter is connected to the microcomputer.

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