Particle detection method for detection of contaminating particles in sealed containers,申请号US19960660483-传众专利搜索

Particle detection method for detection of contaminating particles in sealed containers

申请公布号：US5694221(A)

申请号：US19960660483

申请日期：1996.06.07

申请公布日期：1997.12.02

申请人：

KNAPP, JULIUS Z.

发明人：KNAPP, JULIUS Z.

分类号：G01N21/90;(IPC1-7):G01N21/90

主分类号：G01N21/90

摘要：A method, and device for automated non-destructive deterministic inspection of solutions in transparent containers for particle contamination, comprising the steps of pre-positioning particles in a zone distant from the vertical spin axis, specifically by tilting of the container; rapidly rotating the solution container; suddenly stopping the container, wherein particles within the solution, continue in motion; illuminating the container, while the particles are in motion, whereby particles within the container detectably reflect or block light. The container is tilted, prior to the spinning, by an acute angle ranging from 5 DEG to 85 DEG , from a normal concentric vertical spin axis of the container, whereby effects of gravity are utilized to affect settling of particles to provide improved uniformity of spin energy transfer to the contaminating particles within the container, wherein tilting of the container, results in gravity providing sectoral positioning of the contaminating particles to the lowest portion of the container. Settling of particles is estimated according to Stokes Law, prior to illumination inspection. Spinning of the container is either while the container is in the vertical or tilted position.