Fundamental limits of three-dimensional sensing (or: nature makes no presents)

Gerd Haeusler

doi:10.1117/12.34739

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1 July 1990 Fundamental limits of three-dimensional sensing (or: nature makes no presents)

Gerd Haeusler

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Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.34739
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany

Abstract

We will discuss some physical limits of 3D-sensors that work on ''rough'' surfaces. An important result is that the most frequently used principles (laser triangulation and focus sensing with projected light spots) cannot achieve a better depth resolution than given by the Rayleigh depth of field. However we can achieve ''superresolution'' in depth by sacrificing lateral resolution: There is an ''uncertainty relation'' between lateral and longitudinal resolution. 1 .

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Gerd Haeusler "Fundamental limits of three-dimensional sensing (or: nature makes no presents)", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); https://doi.org/10.1117/12.34739

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