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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-08-02 and was most recently seen on 2026-08-02.
Gradient-index (GRIN) optics is the branch of optics covering optical effects produced by a gradient of the refractive index of a material. Such gradual variation can be used to produce lenses with flat surfaces, or lenses that do not have the aberrations typical of traditional spherical lenses. Gradient-index lenses may have a refraction gradient that is spherical, axial, or radial.
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