Applied Optics · 1990 · 12 citations · 3 references
Natural SciencesPhysicsOptical MaterialsOpticsLens SystemsPhysical OpticsRefractive IndexAplanatic OpticsAplanatic SystemsAspheric GeometryAspheric LensesCurvatureGradient-index LensesGradient-index OpticsLens Design
A gradient index (GRIN) lens, when processed by a spherical curvature at its endface, yields the equivalent aspheric effect, if the curvature is adequately optimized with refractive index distribution coefficients. Aplanatic lens systems of infinite or finite conjugates can be made by utilizing the new type of GRIN lens.
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Gradient-index objective lens for the compact disk system
Hisami Nishi, Hiroyuki Ichikawa, Minoru Toyama et al. · Applied Optics · 1986 · 28 citations