CEFR C1
achromatic lens
noun
Meaning
A compound lens designed to minimize chromatic aberration by bringing light of two different wavelengths into focus at the same plane.
Examples
- The telescope's achromatic lens provided a remarkably sharp view of the distant nebula.
- Engineers replaced the standard glass element with an achromatic lens to eliminate color distortion in the prototype.
Synonyms: lens, objective, optical element, apochromatic lens