Back Градыентная оптыка Byelorussian Градиентла оптика CV Gradientenoptik German Óptica de gradiente de índice Spanish Lentille à gradient d'indice French Gradiëntoptica Dutch Soczewka światłowodowa Polish Градиентная оптика Russian Değişken indis optiği Turkish
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.