LED automatic grader

Shangzhong Jin

doi:10.1117/12.318413

10 August 1998 LED automatic grader

Shangzhong Jin

Proceedings Volume 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II; (1998) https://doi.org/10.1117/12.318413
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Shangzhong Jin "LED automatic grader", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); https://doi.org/10.1117/12.318413

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