Application of polymer graded-index materials for aberration correction of progressive addition lenses

Yuki Shitanoki, Akihiro Tagaya, Yasuhiro Koike

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Graded-index (GRIN) progressive addition lens (PAL) was successfully fabricated, and GRIN's potential for aberration correction of PAL was confirmed. GRIN material was prepared by partial diffusion of methyl methacrylate (MMA (nd at polymer = 1.492)) monomer into cross-linked benzyl methacrylate (BzMA (nd at polymer= 1.568)) flat gel, and GRIN-PAL was prepared by polymerization of the GRIN material attached to a mold of commercially available PAL. GRIN polymer materials have been used for various applications such as rod lenses and optical fibers. GRIN represents gradual change of refractive index in a material, which adds or reduces light focusing power of the material. PAL is a multifocal spectacle lens for presbyopia. However, some localized aberrations (especially astigmatism) in PAL have not yet been reduced satisfactorily for decades by optimizing surface geometry of a lens. In this research, we propose to employ GRIN materials for astigmatism reduction of PALs. BzMA flat gel was prepared by UV polymerization of BzMA, cross-linking agent ethylene glycol dimethacrylate (EDMA) and photopolymerization initiator DAROCURE 1173. MMA monomer was diffused into BzMA flat gel from a portion of periphery for several hours. The obtained GRIN material was attached to a mold of commercially available PAL and polymerized by UV. As a result, reduction of astigmatism was confirmed locally in the fabricated PAL and GRIN-PAL using lens meter. In conclusion, GRIN-PAL was successfully fabricated. The validity of GRIN employment for the astigmatism reduction in PAL was demonstrated experimentally.

本文言語English
ホスト出版物のタイトルOrganic Photonic Materials and Devices XI
DOI
出版ステータスPublished - 2009 6月 29
イベントOrganic Photonic Materials and Devices XI - San Jose, CA, United States
継続期間: 2009 1月 272009 1月 29

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
7213
ISSN(印刷版)0277-786X

Other

OtherOrganic Photonic Materials and Devices XI
国/地域United States
CitySan Jose, CA
Period09/1/2709/1/29

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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