Mathematical description of isogyre formation in refracting structures

Abstract

The cross pattern (isogyres) formed by certain crystals when they are placed between crossed polarizers and illuminated with convergent light results from birefringent properties of the medium. A similar image is seen in refracting structures which exhibit little or no birefringence, such as the eye lens. This paper provides a mathematical explanation of the formation of isogyres by refraction. Copyright © 1993, Wiley Blackwell. All rights reserved