Scan head, an appearance inspection method and an appearance inspection apparatus using the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 6, 2003
Grant Date -
Feb 21, 2002
app pub date -
Feb 23, 2001
filing date -
Aug 11, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An appearance inspection apparatus for inspecting a surface of a printed circuit board requires high inspection accuracy and inspection time reduction. To this end, the apparatus has a scan head that scans an object under inspection and generates image data of the surface of the object. The scan head includes a vertical light source which projects light on the surface from right above the object and a side light source which projects light sidelong on the surface. A lenticular sheet is provided between the vertical light source and the object in order to adjust the vertical light and improve the inspection accuracy in a vertical light test. In a side light test, light sources other than the central part in the vertical light source is turned on and an auxiliary light is projected along with the side light, so that the dynamic range for the inspection can increase.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully