Method of and apparatus for inspecting printed circuit boards
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United States of America Patent
Stats
-
Jul 16, 1991
Grant Date -
N/A
app pub date -
Mar 1, 1990
filing date -
Mar 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a method of and apparatus for inspecting a printed circuit board (PCB) for the nature of its soldered parts comprising three ring-shaped light sources which project light of different hues, the highest light source being any hue other than red, to a part mounted on a PCB at different angles and heights from above, a camera to record the reflected images, and a procedure used to check the recorded patterns to determine if the soldering is acceptable.
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Cited Art Landscape
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