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1. (WO2018204232) SYSTEM AND METHOD FOR DETECTING CONTAMINANTS ON A CIRCUIT

Pub. No.:    WO/2018/204232    International Application No.:    PCT/US2018/030134
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: G01N 21/88
G01N 21/00
G01N 21/17
G01N 21/84
Applicants: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
Inventors: ROCHFORD, Richard
BALDWIN, Tristan, J.
BRABANT, Edward, L., Jr.
MAZEL, Charles, H.
MEADE, Michael, J.
Title: SYSTEM AND METHOD FOR DETECTING CONTAMINANTS ON A CIRCUIT
Abstract:
The present disclosure relates to a system and method utilizing a light source coupled with a viewing device to detect contaminant(s) on an electronic circuit board. This fluorescence microscopy apparatus can be easily integrated into a bench top stereoscope or microscope and does not require the use of expensive and destructive analytical techniques. Typically, blue light is used in conjunction with a filter to detect contamination from cured epoxy resins and many other contaminants on gold bond pads, wires, pads, or other electrically conductive elements on the electronic circuit.