发明名称 |
Automatic X-ray determination of solder joint and view Delta Z values from a laser mapped reference surface for circuit board inspection using X-ray laminography |
摘要 |
An improved circuit board inspection system incorporates self learning techniques for accurate determination of Z-axis elevations of electrical connections. A Delta Z, referenced to a laser range finder generated surface map of the circuit board, is automatically determined from a series of cross sectional images of the electrical connections for each electrical connection on the circuit board. The Delta Z values for each electrical connection are stored in a data base from which customized Delta Z values for specifically defined board views may be calculated.
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申请公布号 |
US6490368(B2) |
申请公布日期 |
2002.12.03 |
申请号 |
US20010919167 |
申请日期 |
2001.07.31 |
申请人 |
AGILENT TECHNOLOGIES, INC. |
发明人 |
RODER PAUL A. |
分类号 |
G01N23/04;G01R31/04;G01R31/304;(IPC1-7):G06K9/00 |
主分类号 |
G01N23/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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