Share Email Print
cover

Optical Engineering

Stylus profilometry for steep aspheric surfaces with multisegment stitching
Author(s): Yifan Dai; Shanyong Chen; Shengyi Li; Hao Hu; Qi Zhang
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

A multisegment stitching method is proposed to get the profile of steep aspheric surfaces with even 90-deg edge slope. The profile is divided into several segments overlapping each other, and the segments are measured with a high-precision stylus profilometer one by one. Then an iterative algorithm is used to stitch all of the segments together, based on the minimization of inconsistency among the overlapping regions. A convex hyperbolic surface is measured with three-segment stitching, and the result is approved by full-profile testing. We also demonstrate the method with a steep elliptical surface, measured and stitched by five segments. Finally, discussions are given on the error introduced by sagittal displacement of the segments.

Paper Details

Date Published: 1 January 2011
PDF: 5 pages
Opt. Eng. 50(1) 013601 doi: 10.1117/1.3518072
Published in: Optical Engineering Volume 50, Issue 1
Show Author Affiliations
Yifan Dai, National Univ. of Defense Technology (China)
Shanyong Chen, National Univ. of Defense Technology (China)
Shengyi Li, National Univ. of Defense Technology (China)
Hao Hu, National Univ. of Defense Technology (China)
Qi Zhang, National Univ. of Defense Technology (China)


© SPIE. Terms of Use
Back to Top