METHOD FOR OPTICAL DETECTION OF FLUORESCENCE AND SCATTERING SIGNALS OF AEROSOL PARTICLES IN STREAM AND OPTICAL SYSTEM FOR REALISING SAID METHOD Russian patent published in 2012 - IPC G01N21/64 

FIELD: physics.

SUBSTANCE: method for optical detection of fluorescence and scattering signals of aerosol particles in a stream involves forming a focused aerosol jet of given diameter, light-striking the aerosol particles with a radiation source, using an optical element as a lens for detecting fluorescence and elastic scattering radiation, transmitting the fluorescence and elastic scattering radiation of aerosol particles to an optical receiver and converting the obtained optical signals to electric signals for further processing and recording. Further, the image of the aerosol jet is transmitted from the plane of the front focus of the optical detection element into a plane; radiation is transmitted from the object plane to receiving areas of at least two optical receivers; radiation is simultaneously divided into at least two spectral ranges; in each of the radiation detection channels, by installing different diaphragms in front of the receiving area of the corresponding optical receiver, boundaries of the analysis region are marked and/or regions are marked, which correspond to a defined spatial angular range of the fluorescence and scattering radiation and/or regions are marked, which correspond to images of optical noise from flare light of the radiation source.

EFFECT: high level of optical signals, high measurement accuracy and high optical signal-to-noise ratio.

23 cl, 5 dwg