Quantitative comparison of gradient index and refractive lenses.

Published

Journal Article

We analyze the Seidel wavefront aberrations and spot sizes of gradient index (GRIN) singlet lenses with Δn≈1. We consider and compare curved and planar GRIN lenses with F-numbers of 5 and 1 against equivalent refractive lenses. We find that the planar GRIN lenses generally have larger spot sizes compared to their refractive lens equivalents at wide angles. This appears to be due to an inability to correct for coma by adjusting the refractive index gradient alone. We can correct for the coma by bending the GRIN lens. This results in a singlet lens with performance close to but not exceeding that of the equivalent refractive lens. We also examine the impact of anisotropy on the planar GRIN lenses. We find that fabricating the planar GRIN lenses from a uniaxial medium has the potential to improve the performance of the lenses.

Full Text

Duke Authors

Cited Authors

  • Nguyen, V; Larouche, S; Landy, N; Lee, JS; Smith, DR

Published Date

  • November 2012

Published In

Volume / Issue

  • 29 / 11

Start / End Page

  • 2479 - 2497

PubMed ID

  • 23201812

Pubmed Central ID

  • 23201812

Electronic International Standard Serial Number (EISSN)

  • 1520-8532

International Standard Serial Number (ISSN)

  • 1084-7529

Digital Object Identifier (DOI)

  • 10.1364/josaa.29.002479

Language

  • eng