High-speed 12-layer two-dimensional bar-code detection system with wide-band photo-detection amplifier and balanced raster scanner

Hiroo Wakaumi; Hiroshi Ajiki

doi:10.1117/12.328644

4 December 1998 A high-speed 12-layer two-dimensional bar code detection system with wideband photodetection amplifier and balanced raster scanner

Hiroo Wakaumi, Hiroshi Ajiki

Author Affiliations +

Proceedings Volume 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications; (1998) https://doi.org/10.1117/12.328644
Event: 1998 International Conference on Applications of Photonic Technology, 1998, Ottawa, Canada

Abstract

A high-speed 12-layer 2D bar-code detection system (BCDS) consisting of a photodetection amplifier with an amplification-type current-voltage converter and a balanced raster scanner combined with the complementary light emission drive method for laser diodes, has been developed in order to provide both a high effective scanning speed and multi-layer bar-code detection. This BCDS performs 1,250 scan/s, which is two and a half times the scanning speed of a conventional bar-code detection system. A new theoretical modulation model that gives an accurate model for laser scanning beam traces obtained by the balanced raster scanner is proposed. This model allows an optimum BCDS to be designed easily.

Citation Download Citation

Hiroo Wakaumi and Hiroshi Ajiki "A high-speed 12-layer two-dimensional bar code detection system with wideband photodetection amplifier and balanced raster scanner", Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); https://doi.org/10.1117/12.328644

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