Influence of interfaces reflectivity for central thickness measurement of a contact lens by low coherence interferometry

I. Verrier; C. Veillas; T. Lépine

doi:10.2971/jeos.2013.13006

Journal of the European Optical Society - Rapid publications, Vol 8 (2013)

Influence of interfaces reflectivity for central thickness measurement of a contact lens by low coherence interferometry

I. Verrier, C. Veillas, T. Lépine

Abstract

This paper evaluates quantitatively the relative interfaces reflectivity of a soft contact lens set in air or in water by a low coherence interferometric method. The sensitivity of the set-up is then measured and the minimum reflectivity is estimated to be as low as 0.02%. Measurement of the central thickness of the lens, even when it is immersed in water, is then possible using a new supercontinuum source.

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