https://scholars.lib.ntu.edu.tw/handle/123456789/611912
標題: | To develop a geometric matching method for precision mold alignment | 作者: | Chen C.-J. Chang C.-L. Jywe W. Wen-Yuh Jywe |
關鍵字: | CCD cameras;Edge detection;Geometry;Glass;Image processing;Light emitting diodes;Light sources;Metal molding;Microlenses;Molding;Molds;Optical data processing;Alignment accuracy;Alignment system;Automatic optical inspection;Geometric matching;High magnifications;Off-axis;Optical alignment systems;Precision molds;Alignment | 公開日期: | 2014 | 卷: | 9217 | 來源出版物: | Proceedings of SPIE - The International Society for Optical Engineering | 摘要: | In order to develop a high accuracy optical alignment system for precision molding machine, a geometric matching method was developed in this paper. The alignment system includes 4 high magnification lenses, 4 CCD cameras and 4 LED light sources. In the precision molding machine, a bottom metal mold and a top glass mold are used to produce a micro lens. The two molds combination does not use any pin or alignment part. They only use the optical alignment system to alignment. In this optical alignment system, the off-axis alignment method was used. The alignment accuracy of the alignment system is about 0.5 μm. There are 2 cross marks on the top glass mold and 2 cross marks on the bottom metal mod. In this paper did not use edge detection to recognize the mask center because the mask easy wears when the combination times increased. Therefore, this paper develops a geometric matching method to recognize mask center. ? 2014 SPIE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922718554&doi=10.1117%2f12.2060633&partnerID=40&md5=752813ab903c8b06412a8394ac5aa05f https://scholars.lib.ntu.edu.tw/handle/123456789/611912 |
DOI: | 10.1117/12.2060633 |
顯示於: | 機械工程學系 |
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