公开(公告)号：US5870203A

公开(公告)日：1999-02-09

申请号：US616377

申请日：1996-03-15

申请人： Chinchuan Chiu ,  Wing Loom Chek ,  Philip Paolella

发明人： Chinchuan Chiu ,  Wing Loom Chek ,  Philip Paolella

IPC分类号： G01N21/89

CPC分类号： G01N21/8903

摘要： A lighting control apparatus for illuminating a moving variable-speed web for inspection with a camera is provided. The apparatus is comprised of a detecting device for detecting the positioning of the web; a lighting device, aligned with the camera, for emitting a light to illuminate the web; a calculating device for calculating the speed of the web; and a control device which controls the emission of light by the lighting device as a function of the speed of the web.