公开(公告)号：US07477374B2

公开(公告)日：2009-01-13

申请号：US11329985

申请日：2006-01-11

申请人： Peter Schmidt ,  Hartwin Stüwe

发明人： Peter Schmidt ,  Hartwin Stüwe

IPC分类号： G01N21/00

CPC分类号： B07C5/3408 ,  G01N21/9054

摘要： The invention concerns a method and a device for examining a container mouth for defects in a mouth sealing surface. A light source emits light beams having a direction component impinging tangentially upon the sealing surface. The tangential light beams are scattered as they impinge upon a defect in the sealing surface. At least some of these scattered light beams are detected by a sensor. The tangential direction component is produced by an optical deflecting element disposed between the light source and the mouth. The optical deflecting element is transparent at least to light of certain wavelengths and deflects impinging light beams accordingly. The invention renders it possible to amplify contrasts between defects and other reflections from the sealing surface during the detection of defects in the sealing surface.

摘要翻译： 本发明涉及一种用于检查容器口部用于嘴部密封表面中的缺陷的方法和装置。 光源发射具有切向地密封在密封表面上的方向分量的光束。 当切向光束撞击密封表面中的缺陷时，切向光束被散射。 这些散射光束中的至少一些由传感器检测。 切向方向分量由设置在光源和嘴之间的光学偏转元件产生。 光学偏转元件至少对于某些波长的光是透明的，并且相应地偏转照射光束。 本发明使得可以在检测密封表面中的缺陷期间放大缺陷和来自密封表面的其它反射之间的对比度。