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    • 1. 发明授权
    • Apparatus for the inspection of printed circuit boards on which
components have been mounted
    • 用于检查其上安装有部件的印刷电路板的装置
    • US5017864A
    • 1991-05-21
    • US369160
    • 1989-06-21
    • Kenichi KaidaOsamu YamadaEiji Okuda
    • Kenichi KaidaOsamu YamadaEiji Okuda
    • G01R31/309
    • G01R31/309
    • An inspection apparatus for inspecting printed circuit boards on which components have been mounted, wherein a light source that generates a light beam in a concentrated spot fashion is mounted on a rotary object and radiates the beam spot onto the printed circuit board at approximately right angles thereto while the rotary object is rotating, so that the surface of the printed circuit board is scanned by the beam spot. Changes of at least either one of the reflection angle and the intensity of the light reflected from the printed circuit board is detected by photoelectric converters provided on the rotary object, and at least either one of the height and the brightness of the position at which the beam spot and the printed circuit board are intersected is measured, thereby performing the inspection of the printed circuit board.
    • 一种用于检查其上安装有部件的印刷电路板的检查装置,其中以集中点形式产生光束的光源安装在旋转物体上,并将束斑以大致直角辐射到印刷电路板上 同时旋转物体旋转,使得印刷电路板的表面被光束点扫描。 从印刷电路板反射的光的反射角度和强度中的至少一方的变化被设置在旋转体上的光电转换器所检测,并且位置的高度和亮度中的至少一个 测量光斑和印刷电路板的相交,从而进行印刷电路板的检查。