Object dimensioning using scanned laser and linear CCD triangulation

John E. Romaine; Edward I. Chaleff

doi:10.1117/12.277753

7 July 1997 Object dimensioning using scanned laser and linear CCD triangulation

John E. Romaine, Edward I. Chaleff

Proceedings Volume 3131, Optical Scanning Systems: Design and Applications; (1997) https://doi.org/10.1117/12.277753
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

One approach to the design of a non-contact, automated system able to measure in three axes is based on triangulation. A system comprised of a CCD sensor and laser source oriented to each other in a triangulation configuration will provide range information. Taking this arrangement and scanning it with the use of a rotating polygonal mirror over a moving conveyor allows for three axis measurement. There are many considerations and parameters that must be taken into account when such a system is designed. The most critical parameter is the triangulation angle which has direct effects on resolution, working distance, and the size of the completed unit. A method is presented to design a system that will measure the length, width and height of a moving object. The genal approach is covered and the major parameters to be decided upon are explained.

Citation Download Citation

John E. Romaine and Edward I. Chaleff "Object dimensioning using scanned laser and linear CCD triangulation", Proc. SPIE 3131, Optical Scanning Systems: Design and Applications, (7 July 1997); https://doi.org/10.1117/12.277753

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