Application of graded-index for astigmatism reduction in progressive addition lens

Yuki Shitanoki, Akihiro Tagaya, Yasuhiro Koike

Research output: Contribution to journalArticlepeer-review


In this research, we propose to apply graded-index (GRIN) to astigmatism correction in a progressive addition lens (PAL). We adopted the diffusion copolymerization method for the GRIN-PAL fabrication. The GRIN material was prepared by partial diffusion of methyl methacrylate monomer into a cross-linked benzyl methacrylate polymer gel. A polymer-based GRIN-PAL was successfully fabricated by molding the GRIN material using a commercially available RAL. As a result, astigmatism reduction was demonstrated by the introduction of GRIN. lt was indicated that the GRIN material is applicable for the further modification of conventional PALs.

Original languageEnglish
Article number032401
JournalApplied Physics Express
Issue number3
Publication statusPublished - 2009 Mar 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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