METHOD ON HOW TO DESIGN A PORTABLE UV-VIS SPECTROPHOTOMETER

摘要

In this paper, a method on how to design a portable UV-Vis Spectrophotometer is generally described. Miniaturized dispersion system based on Hamamatsu array detector S3904 -1024Q and flat field concave holographic grating is developed and tested. In order to overcome the inverse relationship between the sensitivity and resolution, multi bundles optical fibers are employed, one of its ends arranged to be rectangle as the incidence slit. The touch screen is employed as the control and display equipment for the spectrophotometer in place of liquid crystal and keyboard. The integrated fiber-coupled UV -Vis light source with the volume of 155.0~*50.0~*53.3mm~3 is selected as the light source. The testing results of the prototypes show that the new spectrophotometer based on our new method is miniaturization in volume (190~*170~* 100mm~3), can realize multi-wavelength detection on-line, is easily controlled (touch screen control) and the performance accords with the Chinese National Standard.