EP 1076831 A2 20010221 - CIRCUIT BOARD ASSEMBLY INSPECTION
Title (en)
CIRCUIT BOARD ASSEMBLY INSPECTION
Title (de)
INSPEKTION EINER LEITERPLATTE
Title (fr)
CONTROLE D'UN ENSEMBLE PLAQUETTE DE CIRCUIT
Publication
Application
Priority
- GB 9900409 W 19990210
- GB 9803179 A 19980213
- GB 9818768 A 19980827
Abstract (en)
[origin: WO9941621A2] Circuit board assemblies (6) consisting of printed circuit boards (7) to which surface mounted components (8) have been mounted are visually inspected by comparison with a reference circuit board assembly. A reference image (81) is visually compared with a test image (80) using the display (64) of a personal computer (63). Image data is acquired in each case by use of an optical scanner (2) in the form of a flatbed scanner. The circuit board assemblies are positioned during scanning so as to locate a major surface of the circuit board and the surface mounted components within an imaging region (44) of the scanner. Alignment of images is automatically effected by the computer so as to display images using a common frame of reference defined relative to fiducial features of the circuit board assemblies. During scanning, the boards may be supported in an upwardly facing or inverted position within a light excluding enclosure. The method has application to small and medium scale production facilities of printed circuit board assemblies.
IPC 1-7
IPC 8 full level
G01N 21/956 (2006.01)
CPC (source: EP)
H05K 13/0815 (2018.07)
Citation (search report)
See references of WO 9941621A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9941621 A2 19990819; WO 9941621 A3 19991111; AU 2531199 A 19990830; EP 1076831 A2 20010221
DOCDB simple family (application)
GB 9900409 W 19990210; AU 2531199 A 19990210; EP 99904998 A 19990210