Miniature camera lens design with a freeform surface

Yufeng Yan, Jose Sasian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


We present a miniature camera lens design method that uses a freeform surface based on the pedal curve to the ellipse in polynomial form. Two designs are presented and their benefits of optical performance and tolerance sensitivity are compared to designs with conventional aspheric surfaces. We also reverse a freeform design using even aspherical surfaces to show that the optimization solution of a freeform design cannot be reproduced by even aspherical surfaces.

Original languageEnglish (US)
Title of host publicationInternational Optical Design Conference 2017
EditorsJulius A. Muschaweck, John R. Rogers, Peter P. Clark, Richard N. Pfisterer
ISBN (Electronic)9781510616721
StatePublished - 2017
EventInternational Optical Design Conference 2017, IODC 2017 - Denver, United States
Duration: Jul 9 2017Jul 13 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherInternational Optical Design Conference 2017, IODC 2017
Country/TerritoryUnited States


  • Lens design
  • freeform surface
  • lens tolerance
  • miniature camera

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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