公开(公告)号：EP0498811A4

公开(公告)日：1992-12-02

申请号：EP90915370

申请日：1990-09-17

申请人： PRESSCO TECHNOLOGIES INC.

发明人： COCHRAN, DON, W. ,  AUSTIN, JAMES, R.

IPC分类号： G01N21/84 ,  G01N21/88 ,  G01N21/90 ,  G01N21/954 ,  G01N21/956

CPC分类号： G01N21/909 ,  G01N21/8806 ,  G01N2021/8455 ,  G01N2021/8887 ,  G01N2021/95615 ,  G01N2201/06153 ,  G01N2201/102

摘要： An engineered video inspection lighting system includes a three-dimensional array (22) of solid-state light emitting diodes (18) focused to an inspection area. A single high-current, low-duration pulse is applied to selected elements of the array. Light thus generated is passed through a diffuser (26) and to a specimen (D). Light reflected from the specimen is received by a lens (32) of a video camera (34) disposed in an interior of the three-dimensional array (22). Data thus obtained is used to determine acceptability of the specimen in accordance with preselected standards.