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Proceedings Paper

Fast defect detection for large scale photoelectric devices utilizing compressive sensing
Author(s): Quan Lei; Kai Xie; Liu Yan
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Paper Abstract

Conventional scanning method for photoelectric devices is slow and ineffective, especially in large scale applications. Motivated by the fact that the failed or defected components are sparse, this paper proposed a fast scanning method utilizing compressive sensing. The proposed method measures the total output of the sample device under pattern controlled structured light beams. With a few numbers of photo-electric current measurements, the defected components are located in the compressive sensing manner. The concept of propose method and the detection probabilities of the proposed method are evaluated. Simulation results indicating that the sparse defects can be compressively located using a few measurements, and the detection speed can be accelerated by 10 times when the ratio of defects is less than 1.5%; this detection probability is sufficient for real application. The additional advantages of proposed detection system are that no mechanical movement component is required, and the testing for each single cell is no longer required, since the system measures the total output of the whole panel. This feature brings great benefits to the applications for testing the devices that have been assembled or installed.

Paper Details

Date Published: 8 March 2017
PDF: 5 pages
Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102553T (8 March 2017); doi: 10.1117/12.2267966
Show Author Affiliations
Quan Lei, Xidian Univ. (China)
Kai Xie, Xidian Univ. (China)
Liu Yan, Xidian Univ. (China)

Published in SPIE Proceedings Vol. 10255:
Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Yueguang Lv; Jialing Le; Hesheng Chen; Jianyu Wang; Jianda Shao, Editor(s)

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