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.


early 20th century: from apo- + chromatic.



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.

Definition of apochromat in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day rebuff
Pronunciation: rəˈbəf
reject (someone or something) in an abrupt manner…