Thenovelfan-shapedself-scanningphotodiodearray(SSPA)hastheadvantagesofthehighsensitivitywithsmalldevicesizeandtheserialvideooutputmode.UsingnovelSSPAinsteadofthepotodiodearayofasemicircuarannulardetectorsinthelaserdiffractionparticlesizeanalyzer,thesecorrectnessoftheresultsareverifiedbyvariousparticlesamplesmeasuringandthepracticalrunningovertenthousandhoursinthedesuplhurationtower.