Chinese Journal of Lasers B, 1999, 8 (2): 121, 网络出版: 2006-08-08
A Shadow Moire Technique by Optional Multiple Light Sources for BGA Coplanarity Measurement
A Shadow Moire Technique by Optional Multiple Light Sources for BGA Coplanarity Measurement
摘要
Abstract
Shadow moire profilometry is a whole field non-contact 3-D measurement method. Generally there exist mechanical motion so that the measurement speed, life time and reliability are limited. A fast measurement method without mechanical motion is realized in this work by using the technique of changeable light source.This method satisfies the need for the on-line measurement of BGA coplanarity.
SONG Yuanhe, LI Genqian, ZHAO Hong, DONG Daqun, JAN Yushan. A Shadow Moire Technique by Optional Multiple Light Sources for BGA Coplanarity Measurement[J]. Chinese Journal of Lasers B, 1999, 8(2): 121. SONG Yuanhe, LI Genqian, ZHAO Hong, DONG Daqun, JAN Yushan. A Shadow Moire Technique by Optional Multiple Light Sources for BGA Coplanarity Measurement[J]. 中国激光(英文版), 1999, 8(2): 121.
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