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  • Title: Large-aperture automatic focimeter for the measurement of optical power and other optical characteristics of ophthalmic lenses.
    Author: Gnanvo K, Wu ZY, de Bougrenet de la Tocnaye JL, Liu L.
    Journal: Appl Opt; 2002 Oct 01; 41(28):5997-6005. PubMed ID: 12371562.
    Abstract:
    We propose an optical apparatus enabling the measurement of spherical power, cylindrical power, and optical center coordinates of ophthalmic lenses. The main advantage of this new focimeter is to provide a full bidimensional mapping of the characteristics of ophthalmic glasses. This is made possible thanks to the use of a large-area and high-resolution position-sensitive detector. We describe the measurement principle and present some typical mappings, particularly for progressive lenses. We then discuss the advantages in terms of speed and versatility of such a focimeter for the measurement of complex lens mappings.
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