Abstract

This study aimed to inspect micro-lens size of optical connectors. In imaging, it can be found that the edge of a micro-lens and sharpness of the base image are different from the images of a square or straight edge. The edge of a micro-lens may be fuzzy and its gray scale distribution map may present a downtrend, making it difficult to identify the edge position.This study used a micro-lens with a diameter of 110μm as a basis reference. Furthermore, a high-precision AFM was used to obtain accurate values. The measured results were substituted into a newly proposed fuzzy ratio analysis method to deduce the fuzzy ratio and adjust edge fuzzy functions for further analysis of the micro lens edge in order to obtain more accurate results, which were used for the inspection of optical connectors to improve measurement accuracy. The experiment demonstrated that the error between the study results and the results of the commercial measurement system is lower than 1μm, and the inspection speed is faster.

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