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Proceedings Paper

System analysis of bar code laser scanner
Author(s): Jianpu Wang; Zhaofeng Chen; Zukang Lu
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Paper Abstract

This paper focuses on realizing the three important aspects of bar code scanner: generating a high quality scanning light beam, acquiring a fairly even distribution characteristic of light collection, achieving a low signal dynamic range over a large depth of field. To do this, we analyze the spatial distribution and propagation characteristics of scanning laser beam, the vignetting characteristic of optical collection system and their respective optimal design; propose a novel optical automatic gain control method to attain a constant collection over a large working depth.

Paper Details

Date Published: 3 October 1996
PDF: 9 pages
Proc. SPIE 2899, Automated Optical Inspection for Industry, (3 October 1996); doi: 10.1117/12.253012
Show Author Affiliations
Jianpu Wang, Zhejiang Univ. (China)
Zhaofeng Chen, Zhejiang Univ. (China)
Zukang Lu, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 2899:
Automated Optical Inspection for Industry
Frederick Y. Wu; Shenghua Ye, Editor(s)

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