Hybrid diffractive-refractive achromatic spectacle lenses.
The possible utility of high-power hybrid achromatic spectacle lenses, each consisting of a contact combination of refractive and diffractive components, is considered. It is shown that such a combination can, in principle, minimize blur due to transverse chromatic aberration in high-power prescriptions such as those for aphakes and high myopes. The combination has essentially the same thickness and weight as a conventional singlet lens. Some practical problems relating to hybrid designs are discussed.
Department of Optometry and Vision Sciences, University of Manchester Institute of Science and Technology, UK.
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Charman
D004867:Equipment Design; D005139:Eyeglasses; D055095:Optics and Photonics; D012031:Refractometry