Light sectioning with large depth and high resolution
- 15 December 1988
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 27 (24) , 5165-5169
- https://doi.org/10.1364/ao.27.005165
Abstract
We report a method for 3-D sensing by light sectioning. The specific goal is to demonstrate that high resolution and large depth can be achieved simultaneously, thus overcoming the major limitation of conventional light sectioning. We use the diffraction pattern of an axicon to generate a light knife with large depth of field (for example, 1700 mm) and high lateral resolution (for example, 55 μm). Illuminating an object with this light knife creates a profile on the object. We detect this profile with a CCD TV camera and evaluate the centroid of the profile by means of an interpolation algorithm.Keywords
This publication has 4 references indexed in Scilit:
- Triangulation With Expanded Range Of DepthOptical Engineering, 1985
- Generalized Aperture and the Three-Dimensional Diffraction ImageJournal of the Optical Society of America, 1964
- Axicons and Their UsesJournal of the Optical Society of America, 1960
- The Axicon: A New Type of Optical ElementJournal of the Optical Society of America, 1954