Design of high-power aspherical ophthalmic lenses with a reduced error budget

Wen Shing Sun, Horng Chang, Ching Cherng Sun, Ming Wen Chang, Ching Huang Lin, Chuen Lin Tien

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

As in the lens optimization process, ophthalmic lens designers have usually constructed error functions with 0.5, 0.7, and 1.0 at only three oblique fields. This seems enough to achieve a balanced trade-off with the astigmatic error, the power error, and the distortion all being considered simultaneously. However, for high-power ophthalmic lenses, the aberration curves show serious violations even if aspherical coefficients are involved. The analytical results indicate that a field error suppression of up to 7 points may even be required in some cases. The suppression effects are excellent and examples of both positive and negative lenses are designed.

Original languageEnglish
Pages (from-to)460-470
Number of pages11
JournalOptical Engineering
Volume41
Issue number2
DOIs
StatePublished - Feb 2002

Keywords

  • Aspherical surface
  • Mean oblique power error
  • Oblique astigmatism error
  • Ophthalmic lenses
  • Optimization method

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