Title :
3-D visual inspector of PCB using laser
Author :
Yano, Junichi ; Yamada, Osamu ; Hiraoka, Eiichi ; Kaida, Kenichi
Author_Institution :
Matusita Kotobuki Electr. Co. Ltd., Ehime, Japan
Abstract :
A novel automated inspecting system has been developed that uses a multifunction sensor which moves on a printed circuit board (PCB) at high speed and measures 3-D information and the brightness of the object. Due to the capability of the 3-D shape-scanning method, this 3-D visual inspector can inspect solder-joint quality as well as solder volume and shape, regardless of the quality of PCB used and the degree of bend on the circuit board. The operating principle and specifications of this device are presented
Keywords :
automatic optical inspection; laser beam applications; printed circuit manufacture; soldering; 3D visual inspection; automated inspecting system; brightness; multifunction sensor; operating principle; printed circuit board; shape-scanning method; solder volume; solder-joint quality; Brightness; Capacitors; Color; Digital signal processing; Diodes; Lead; Partial response channels; Soldering; Wire;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149244
