公开(公告)号：EP1109029A1

公开(公告)日：2001-06-20

申请号：EP00108285.8

申请日：2000-04-14

申请人： MANIAtech, Inc.

发明人： Cugini, Mario A. ,  Brakley, Jeff ,  Ravich, Gilbert Norman ,  Miles, George E. III ,  Giusti, Ralph Lynn

IPC分类号： G01R31/265

CPC分类号： G01R31/309

摘要： A tester (10) for electrical traces (85) such as on a circuit board (80) includes an electromagnetic beam source (20) such as a laser producing an ultraviolet beam (24), a vacuum chamber (12), an electrode circuit (49) including electrodes (51) and corresponding electronics (55) including ammeters (59) for measuring photoelectron flow between traces (85) and electrodes (51), a controller (71), laser beam optics (41, 44, 46), an image acquisition system, and a pair of broadband UV lights. The board containing traces (85) under test is disposed in the vacuum chamber (12) at lowered pressure with grid electrodes (51) lying close to the trace area (85) on each side of the board. Electrode electronics (55) selectively maintain a known potential on each electrode (51). The exact location of traces (85) are determined by an image acquisition system. The board (80) and traces (85) are initialized to a known voltage. Photoelectric effect using ultraviolet laser beams (24) is used to determine continuity between two points (87) on a trace (85) and shorts between traces (85).

摘要翻译： 一种用于电迹线测试器（10）（85）：如在电路板（80）包括电磁束源（20）：如激光在紫外光束（24）产生，一真空腔室（12）到电极电路 （49）包括电极（51）和相应的电子设备（55）包括电流表（59），用于测量迹线之间和电极（51）的激光束光学光电子流​​（85），控制器（71），（41，44，46） 中，图像采集系统;和一对宽带紫外线灯。 待测板包含迹线（85）被布置在与在栅格电极（51）降低的压力的真空腔室（12）紧贴在板的每一侧上的迹线区域（85）。 电极电子器件（55）选择性地维持在各电极（51）已知电位。 迹的准确位置（85）是确定性的由图像采集系统开采。所述板（80）和迹（85）初始化为一个已知的电压。 光电使用效果的紫外线激光束（24）被用于在一个迹（85）和短裤迹线之间（85）的两个点（87）之间的确定性矿连续性。