Definition of apochromat in English:


Line breaks: apo|chro¦mat
Pronunciation: /ˌapəˈkrəʊmat, ˈapəkrəmat


  • A lens or lens system that reduces spherical and chromatic aberration.
    More example sentences
    • There are now a few apochromats on the market that are comparable in price to similar, high-end achromats.
    • Higher order spherical aberration in apochromats is a result of strongly curved lens surfaces.
    • The biggest problem with early apochromats, other than their sizable cost and complexity, was light loss.



Pronunciation: /-krəˈmatɪk/
More example sentences
  • In 1868 he invented the apochromatic lens system for the microscope.
  • The apochromatic lens, therefore, corrects for chromatic aberration to a greater degree than does an achromatic lens.
  • I hope the following history of the apochromatic lens designs made by Roland Christen of Astro-Physics is of some interest to the readers.


early 20th century: from apo- + chromatic.

More definitions of apochromat

Definition of apochromat in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody