Soldering inspection system and method therefor
AssigneeMatsushita Electric Works, Ltd.
InventorsShinji Okamoto, Kazunari Yoshimura, Tomoharu Nakahara
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Abstract
A soldering inspection system wherein light is irradiated on a soldered part at different incident angles by a light emitting means to collect information indicative of three-dimensional configuration of the soldered part and discriminate whether or not the configuration is acceptable. The three-dimensional configurational information can be obtained with light irradiated at least from two positions mutually of different angles with respect to the soldered part, the inspection is thereby made from quantitative viewpoint, and a highly precise result of the inspection is obtainable.
Claims16
A soldering inspection system wherein light is emitted from a plurality of light-emitting means onto soldered parts which are disposed with respect to electronic components on an object such as a printed circuit board or the like, and information indicative of a multi-dimensional surficial configuration of said soldered parts is detected for determining the acceptability of the soldered parts, said plurality of light-emitting means being arranged to produce emitted rays of light incident on each soldered part from different angles relative to a plane of said object, including a substantially zero degree angle, a substantially 90 degree angle, and at least one intermediate angle therebetween, means for sequentially actuating said plurality of light-emitting means to emit light sequentially from said different angles, and detecting means for detecting the object while the object is illuminated sequentially from said different angles for producing a plurality of signals representative of a multi-dimensional configuration of the surface of each soldered part.
A soldering detection method for determining the acceptability of soldered parts disposed with respect to electronic components on an object such as a printed circuit board or the like, said method comprising the steps of actuating a plurality of light-emitting means for directing a plurality of beams of light toward said soldered parts such that said light beams are incident on each soldered part from different angles relative to a plane of said object, including a substantially zero degree angle, a substantially 90 degree angle, and at least one intermediate angle therebetween, actuating said plurality of light means sequentially to emit light sequentially from said different angles, and detecting the object while the object is illuminated sequentially from different angles for producing a plurality of signals representative of a multi-dimensional configuration of the surface of each soldered part.
Dependencies are inferred from the claim text.