Graphical representation of the visual aberrations of biocular magnifiers

Nicholas K. Bustin; Christopher R. Bigwood; Philip J. Rogers

doi:10.1117/12.514605

18 February 2004 Graphical representation of the visual aberrations of biocular magnifiers

Nicholas K. Bustin, Christopher R. Bigwood, Philip J. Rogers

Proceedings Volume 5249, Optical Design and Engineering; (2004) https://doi.org/10.1117/12.514605
Event: Optical Systems Design, 2003, St. Etienne, France

Abstract

A biocular magnifier is an optic that is sufficiently large to be used by both eyes together, and which presents a magnified virtual image at a finite distance from an observer. The design of such an optic is one of the most difficult tasks in optical design due to the extreme optical parameters, the relatively high level of residual aberrations, and the interface between the image and two-eye vision. As such, biocular magnifiers of reasonable magnifying power (>x4.5) cannot easily be analysed in a meaningful way using conventional optical design software. A number of years ago, a unique computer program was written that enabled the analysis of biocular magnifiers in the way in which they were used, that is with the spatial image being viewed by two small mobile apertures of nominally fixed separation. Utilising the power of modern PC computers, this program has been extended considerably so that it provides detailed graphical analysis of the visual aberrations appropriate to an extreme optical system usable by both eyes together. The reasoning behind the software and examples of the graphical analysis of biocular designs is given in the paper.

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Nicholas K. Bustin, Christopher R. Bigwood, and Philip J. Rogers "Graphical representation of the visual aberrations of biocular magnifiers", Proc. SPIE 5249, Optical Design and Engineering, (18 February 2004); https://doi.org/10.1117/12.514605

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