Modeling And Simulation Of Bar Code Scanners Using Computer Aided Design Software

Ron Hellekson; Scott Campbell

doi:10.1117/12.944327

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9 June 1988 Modeling And Simulation Of Bar Code Scanners Using Computer Aided Design Software

Ron Hellekson; Scott Campbell

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Proceedings Volume 0892, Simulation and Modeling of Optical Systems; (1988) https://doi.org/10.1117/12.944327
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

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.

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Ron Hellekson and Scott Campbell "Modeling And Simulation Of Bar Code Scanners Using Computer Aided Design Software", Proc. SPIE 0892, Simulation and Modeling of Optical Systems, (9 June 1988); https://doi.org/10.1117/12.944327

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