device for determining the histogram of the size distribution of particles, especially of blood cells

摘要

A.appareil particle size analyser of a substance formed of particles of different sizes. / p & & p & b.il comprises a laser, the means to form the diffraction spectrum of a sample of the substance, the means of reading of the diffraction spectrum in a radial direction and to obtain a first signal i (o) or i is the light intensity and the distance of a point of the diffraction spectrum has its center, the means for carrying out the hankel transformed of this first signal and thus to obtain a second signal as a function of time; means for calculating a third signal derivative equal to the second of the second signal with respect to time, this third signal being equal to the product of convolution of the n (a) of the repair of the particles according to their size is a function of this size; and means for carrying out of the said derivative in order to obtain a signal equal fourth has the function of / 00307. / p & & p & c.analyse of the blood or particular, in particular of the blood.