Imaging Properties of Two-Dimensional Microlenses

TL;DR

This paper explores how two-dimensional microlenses can function as fisheye or Eaton lenses, revealing their imaging mechanisms and demonstrating magnification effects through transformation optics and experimental validation.

Contribution

It introduces a novel understanding of microlenses as fisheye or Eaton lenses using transformation optics, with experimental confirmation of magnification.

Findings

Microlenses can act as fisheye or Eaton lenses.

Asymmetric Eaton lenses exhibit significant magnification.

Experimental evidence supports the theoretical models.

Abstract

Despite strong experimental and theoretical evidence supporting superresolution imaging based on microlenses, imaging mechanisms involved are not well understood. Based on the transformation optics approach, we demonstrate that microlenses may act as two-dimensional fisheye or Eaton lenses. An asymmetric Eaton lens may exhibit considerable image magnification, which has been confirmed experimentally.