| 摘要 |
: 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. |
