1 December 1985 Triangulation With Expanded Range Of Depth
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Abstract
In conventional triangulation systems for 3-D sensing there is a trade-off between range of depth and resolution. We propose a triangulation system with a large depth of field (1 m or more) and, at the same time, high resolution (20µm or better). The system is based essentially on a tele-axicon in the illumination device and on the use of the Scheimpflug condition in the observation device. A suitable scanning-by-deflection geometry is described.
G. Bickel, G. Hausler, M. Maul, "Triangulation With Expanded Range Of Depth," Optical Engineering 24(6), 246975 (1 December 1985). https://doi.org/10.1117/12.7973610 . Submission:
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