WANG Xiao-peng LIU ZHi-hua CHEN Tian-ning. Design of bonding quality testing system for micro device made of transparent materials[J]. Editorial Office of Optics and Precision Engineering, 2013,21(1): 69-76
WANG Xiao-peng LIU ZHi-hua CHEN Tian-ning. Design of bonding quality testing system for micro device made of transparent materials[J]. Editorial Office of Optics and Precision Engineering, 2013,21(1): 69-76 DOI: 10.3788/OPE.20132101.0069.
Design of bonding quality testing system for micro device made of transparent materials
A visible light transmittance machine vision detection method was put forward to measure the bonding quality of micro devices made by transparent materials with specific compositions and structures. The performance requirements of main components in the system hardware was analyzed
and the image processing techniques for the detection system were researched. The visible light transmittance machine vision detection system captured the image with the main components of the light source
camera
lens and the computer and implemented quality testing by image subtraction
gray histogram adjustment
image filtering and image binarization. Experimental results indicate that the proposed detection method can detect the bonding gaps of the micro devices made by transparent materials sensitively and effectively
and the detection accuracy of flaw size is about 10 m. The results meet the detection requirements of micro devices for bonding quality and verify that the method is efficient
non-contact
non-destructive and non-polluting.
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references
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