The application of surface fairing technique in progressive lens processing

JianJun Du, Suet To, Chi Fai Cheung, Wing Bun Lee, XiangWen Miao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Based on the analysis of characteristics of progressive lens, it can be found that lens uneven change of curvature is an important reason of defect on progressive lens processed by single-point diamond cutting technique. By applying least square fairing method to fair the surface which is fitted and interpolated by Double Cubic B-Spline method, the curvature change of progressive surface becomes even. The processing experiment shows that the method in this paper can eliminate the defect effectively in the ultra-precision processing of progressive lenses.
Original languageEnglish
Pages (from-to)1246-1250
Number of pages5
JournalKey Engineering Materials
Volume364-366 II
Publication statusPublished - 11 Feb 2008

Keywords

  • Least square method
  • Progressive lens
  • Surface fairing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

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