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1. (WO2018203824) SYSTEM AND METHOD FOR LEAD FOOT ANGLE INSPECTION USING MULTIVIEW STEREO VISION

Pub. No.:    WO/2018/203824    International Application No.:    PCT/SG2017/050232
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed May 03 01:59:59 CEST 2017
IPC: G01B 11/26
G01N 21/84
Applicants: GENERIC POWER PTE LTD
Inventors: TANG, Hak Wee
CAO, Ruini
LIM, Kok Yeow
THANT, Zin Oo
Title: SYSTEM AND METHOD FOR LEAD FOOT ANGLE INSPECTION USING MULTIVIEW STEREO VISION
Abstract:
The present invention includes a system and method for three-dimensional imaging and analysis of electronic components. Specifically, it permits rapid and reliable inspection of the lead foot angle in integrated circuit packages. A first image capturing device, a second image capturing device and a third image capturing device are arranged in a "corner shape" or "L-shape." The first image capturing device forms the corner and obtains an image of the bottom of the component. The perspective viewing angle of the second image capturing device and the perspective viewing angle of the third image capturing device are orthogonal to each other to allow accurate three-dimensional reconstruction of the lead angles and detection of flaws or bends.