Skip to main content

Highly improved range sensing – by reduction of spatial coherence

Buy Article:

$28.45 plus tax (Refund Policy)

Abstract:

Abstract: Optical range sensors based on triangulation are widely used for the shape measurement of optically rough objects. The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. We demonstrate two experiments which prove that without spatial coherence, the measuring uncertainty can be dramatically reduced, and we present an on-line 3D-sensor for laser-material processing, exploiting this knowledge.

Keywords: Optical metrology; coherent noise; distance measurement; laser material processing; triangulation

Document Type: Original Article

DOI: https://doi.org/10.1078/0030-4026-00058

Affiliations: Lehrstuhl für Optik, Universität Erlangen, Staudtstrasse 7/B2, 91058 Erlangen, Germany

Publication date: 2001-06-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more