Optimal illuminator design for automatic optical inspection systems. (17th March 2010)

• Record Type: Journal Article
• Authors: Lu, Shenglin; Zhang, Xianmin; Kuang, Yongcong
• Is Part Of: International journal of computer applications technology. Volume 37:Number 2(2010)
• Page Start: 101
• Page End: 108
• Publication Date: 2010-03-17
• Subjects: AOI -- automatic optical inspection -- illuminator design -- inspection -- solder joints -- machine vision -- LED arrays -- light emitting diodes -- illuminators -- optimal design -- modelling; Technology -- Data processing -- Periodicals; 620.00285
• Languages: English
• ISSNs: 0952-8091

Abstract

This paper presents an illuminator for the Automatic Optical Inspection (AOI) system. First, the structure of the designed illuminator is introduced. The structure consists of three Light Emitting Diode (LED) arrays, which have different colour and radiation angles. Second, the radiance model of the illuminator and the irradiance model of the solder joint are developed. Third, the dimensions of the illuminator are optimised based on the irradiance model. Finally, the inspection method is implemented and tested, and experimental results verify the validity of the design.