Appearance inspection apparatus and method of image capturing using the same
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United States of America Patent
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May 22, 2007
Grant Date -
Nov 4, 2004
app pub date -
Jan 23, 2004
filing date -
Jan 24, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is an appearance inspection apparatus and method utilizing multiple light sources in a lighting unit 30 to alternately irradiate, line by line, side light from a side light source and slit light from a slit light source onto board 1 to be inspected. A correction value memory unit stores digital correction values required for correcting shadings for the side light source and the slit light source and an analysis unit utilizes these digital correction values to correct shadings on the image data. A highly accurate image is thus obtained.
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Cited Art Landscape
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