achromat(redirected from achromats)
Also found in: Medical, Encyclopedia.
Related to achromats: Achromatic doublet
1. (General Physics) Also called: achromatic lens a lens designed to bring light of two chosen wavelengths to the same focal point, thus reducing chromatic aberration. Compare apochromat
2. (Medicine) a person who has no colour vision at all and can distinguish only black, white, and grey. The condition is very rare