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Proceedings Paper

Modeling And Simulation Of Bar Code Scanners Using Computer Aided Design Software
Author(s): Ron Hellekson; Scott Campbell
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Paper Abstract

Many optical systems have demanding requirements to package the system in a small 3 dimensional space. The use of computer graphic tools can be a tremendous aid to the designer in analyzing the optical problems created by smaller and less costly systems. The Spectra Physics grocery store bar code scanner employs an especially complex 3 dimensional scan pattern to read bar code labels. By using a specially written program which interfaces with a computer aided design system, we have simulated many of the functions of this complex optical system. In this paper we will illustrate how a recent version of the scanner has been designed. We will discuss the use of computer graphics in the design process including interactive tweaking of the scan pattern, analysis of collected light, analysis of the scan pattern density, and analysis of the manufacturing tolerances used to build the scanner.

Paper Details

Date Published: 9 June 1988
PDF: 13 pages
Proc. SPIE 0892, Simulation and Modeling of Optical Systems, (9 June 1988); doi: 10.1117/12.944327
Show Author Affiliations
Ron Hellekson, Spectra-Physics, Inc. (United States)
Scott Campbell, Spectra-Physics, Inc. (United States)


Published in SPIE Proceedings Vol. 0892:
Simulation and Modeling of Optical Systems
Robert E. Fischer; Donald C. O'Shea, Editor(s)

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