achromatic lens | engleski leksikon

1. achromatic lens


A compound lens system that forms an image free from chromatic aberration.
Lens for which all light colors have the same focal length.
Combination of lenses made from materials of different refractive indexes, constructed in such a way as to minimize chromatic aberration (which in a single lens causes colored fringes around images because the lens diffracts the different wavelengths in white light to slightly different extents).

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