Test for Mounting IC Chips on Printed Boards by a Laser Displacement Meter.

概要

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A laser displacement meter based on the principle of optical triangulation is applied to measuring distance or displacement to an object and its shape. The dispersion of the obtained data is caused by the affection of measuring surface. The three dimensional shape measurement system was assembled by using the laser displacement meter and computer controlled scanning machine CDC-3DN. In this paper we consider the on-line measurement with 5μm resolution for mounting IC chips on printed circuit boards. The moving average of the measurement data is calculated to delete their dispersion in the computer. And the CG (Computer Graphics) drawings of the obtained date are made by a software program Mathematica. The measurement results show the possibilities to test the shape of IC pins and to control the shape of wiring solder on boards.
公益社団法人計測自動制御学会の論文