Gradient-index contact lens

Yasuhiro Koike, Akihiko Asakawa, Shang Pin Wu, Eisuke Nihei

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A gradient-index (GRIN) contact lens (CL) is proposed to decrease spherical aberration and to increase the diopter. A plastic radial GRIN rod was successfully obtained by using the vapor-phase diffusion copolymerization technique. The resulting index distribution of the GRIN rod was almost parabolic against the distance from the center axis, and the Δn value was −0.030. The GRIN CL was prepared by grinding and polishing the rod. It is theoretically and experimentally concluded that using the radial GRIN material can significantly improve the optical properties of CL's.

Original languageEnglish
Pages (from-to)4669-4673
Number of pages5
JournalApplied Optics
Issue number22
Publication statusPublished - 1995 Aug


  • Contact lens
  • Copolymerization
  • Diopter
  • GRIN
  • Maxwell's ray equation
  • Methyl methacrylate
  • Polymer

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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