A laser-induced fluorescence detector comprising a means (5) for the transmission of a laser beam(8), a cell (4) fitted inside a capillary (2), whereby said cell (4) receives a solution containing at least one unknown substance which is fluorescent with respect to the wavelength of a fluorescent laser beam, illuminating means comprising a digital low aperture lens (6), a ball-shaped lens (10), and the same optical means (10,6) collecting the emitted fluorescence which is treated in order to provide the results of an analysis. The ball-shaped lens (10) converts the laser beam into a divergent beam, thereby making it possible to have a large illuminated volume in the lens (4).
展开▼
