| 摘要 |
The invention relates to a fiber-optic monochromator meant to carry out the supply of a multicomponent solution with a luminous radiation of precise wavelengths in order to rapidly determine the concentration of each component. According to the invention, the monochromator has a compact structure ensuring an automatic switching on of some LEDs (1), circularly cast into a polymer matrix (8), by an electronic multiplexer (3), the luminous radiation being transmitted through the same number of optical fibers (9) to a collecting optical fiber (10) which irradiates a vat (11) made of glass, containing the solution (S) to be analyzed, the intensity of the luminous radiation being converted into a proportional electric voltage by a photodiode (12) and an electronic amplifier (13), said voltage being stored, processed and displayed in an electronic unit (7) as concentration values of the chemical species which is photometered at that moment at the wavelength specific thereto. |
