Optical properties of a bio-inspired gradient refractive index polymer lens

Opt Express. 2008 Jul 21;16(15):11540-7.


The design, fabrication, and properties of one of a new class of gradient-index lenses are reported. The lens is an f/2.25 GRIN singlet based on a nanolayered polymer composite material, designed to correct for spherical aberration. The light gathering and focusing properties of the polymer lens are compared to a homogeneous BK7 glass singlet with a similar f-number. The modulation transfer function of the polymer GRIN lens exceeded that of the homogeneous glass lens at all spatial frequencies and was as much as 3 times better at 5 cyc/mm. The weight of the polymer lens was approximately an order of magnitude less than the homogeneous glass lens.

Publication types

  • Evaluation Study
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biomimetic Materials*
  • Cornea*
  • Equipment Design
  • Equipment Failure Analysis
  • Humans
  • Lens, Crystalline*
  • Lenses*
  • Polymers / chemistry*


  • Polymers