aplanat

aplanat (plural aplanats)

1. (optics) A lens that has been corrected for spherical aberration and coma in order to produce a rectilinear image.
   • 1894, W. K. Burton, “The Zeiss Anastigmatic Lenses”, in Julius F. Sachse, editor, American Journal of Photography, Volume XV, page 4:

     For comparison, an aplanat of a focus catalogued at 16 inches, actually found by experiment to have a focus of 16 11-16 inches, was used.

   • 2009, Gérard René Lemaitre, Astronomical Optics and Elasticity Theory, Springer, Astronomy and Astrophysics Library, Corrected 3rd printing, page 11,

     […] which is totally false since he established the algebraic conditions for thin-lens achromatic aplanats;

   • 2014, J. F. James, An Introduction to Practical Laboratory Optics, Cambridge University Press, page 171:

     Some infra-red detectors are sold already embedded in a plastic aplanat.

• aplanatic
• aplanatism

• achromat
• anastigmat

• Spherical aberration on Wikipedia.Wikipedia
• Optical aberration on Wikipedia.Wikipedia

aplanat (feminine aplanada, masculine plural aplanats, feminine plural aplanades)

1. past participle of aplanar

aplanat m (plural aplanats)

1. aplanat

• aplanétique

• “aplanat”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Borrowed from German Aplanat, from Ancient Greek ἁπλοῦς (haploûs). Doublet of apla.

• IPA^(key): /aˈpla.nat/

• Audio:

  (file)

• Rhymes: -anat
• Syllabification: a‧pla‧nat

aplanat m inan

1. (optics) aplanat, aplanatic lens

• aplanat in Polish dictionaries at PWN

Past participle of aplana.

aplanat n (plural aplanaturi)

1. calming

aplanat (past participle of aplana)

1. past participle of aplana

• aplanat in Academia Română, Micul dicționar academic, ediția a II-a, Bucharest: Univers Enciclopedic, 2010. →ISBN