Original Research

Exploded representation of a refracting surface

W.H. Heath, W.F. Harris
African Vision and Eye Health | South African Optometrist: Vol 64, No 2 | a217 | DOI: https://doi.org/10.4102/aveh.v64i2.217 | © 2005 W.H. Heath, W.F. Harris | This work is licensed under CC Attribution 4.0
Submitted: 19 December 2005 | Published: 19 December 2005

About the author(s)

W.H. Heath, Optometric Science Research Group, Department of Optometry, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa
W.F. Harris, Department of Mathematics and Statistics, University of Johannesburg, PO Box 524, Auckland Park, 2006 South Africa

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Abstract

The concept of the exploded refracting sur-face is useful in the optics of contact lenses and vision underwater. The purpose of this paper is to show how to represent a refracting surface as an exploded pair of surfaces separated by a gap of zero width.  The analysis is in terms of linear optics and allows for astigmatic and non-coaxial cases.

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