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Proceedings Paper

LED automatic grader
Author(s): Shangzhong Jin
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Paper Abstract

An automatic grader with testing light intensity and forward voltage of LED is presented in this paper. It mainly includes three parts: automatic conveying, automatic testing and automatic classification of LED. Automatic conveying of LED is operated by industry controlling computer controlling vibration salver. The light intensity and forward voltage of lighting LED is measured, they are compared with set grade value and the LED's grade is determined. Then the LED is sent in relative bin by computer controlling pneumatic components and synchronizing motor.

Paper Details

Date Published: 10 August 1998
PDF: 3 pages
Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318413
Show Author Affiliations
Shangzhong Jin, China Institute of Metrology (China)


Published in SPIE Proceedings Vol. 3558:
Automated Optical Inspection for Industry: Theory, Technology, and Applications II
Shenghua Ye, Editor(s)

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