Thesaurus: apochromatic

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Definitions

1. adj. corrected for both chromatic and spherical aberration
2. Free from chromatic and spherical aberration; -- said esp. of a lens in which rays of three or more colors are brought to the same focus, the degree of achromatism thus obtained being more complete than where two rays only are thus focused, as in the ordinary achromatic objective. --Ap`o*chro"ma*tism (#), n.
3. Free from chromatic and spherical aberration; -- said esp. of alens in which rays of three or more colors are brought to the samefocus, the degree of achromatism thus obtained being more completethan where two rays only are thus focused, as in the ordinaryachromatic objective. --Ap`o*chro"ma*tism (#), n.
4. j:100 s. corrected for both chromatic and spherical aberration