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Novel approach to optical profiler with gradient focal point methods.

Authors
  • Leeghim, Henzeh
  • Ahn, MyoungKi
  • Kim, Kwangsoo
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Oct 08, 2012
Volume
20
Issue
21
Pages
23061–23073
Identifiers
DOI: 10.1364/OE.20.023061
PMID: 23188270
Source
Medline
License
Unknown

Abstract

Novel gradient focal point (GFP) methods by use of the gradient curvature cylindrical lens, the gradient thickness cylindrical lens and a tilted imaging sensor are proposed for the optical profiler. With the employed simple idea that the different divergence angle of an input beam to the lens generates the different focal position, the height information of one point can be obtained just in a single-shot by GFP approaches. The feasibility of the proposed system is demonstrated to be an alternative to optical profilers.

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