aplanat

English

Noun

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.

Related terms

• aplanatic
• aplanatism

Translations

lens corrected for spherical aberration and coma

• French: aplanat (fr) m
• German: Aplanat m or n
• Italian: please add this translation if you can
• Polish: aplanat (pl) m
• Russian: аплана́т (ru) m (aplanát)

See also

• achromat
• anastigmat

Further reading

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

Catalan

Participle

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

1. past participle of aplanar

French

Noun

aplanat m (plural aplanats)

1. aplanat

Related terms

• aplanétique

Further reading

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

Polish

Etymology

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

Pronunciation

• IPA^(key): /aˈpla.nat/

• Audio:

  (file)

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

Noun

aplanat m inan

1. (optics) aplanat, aplanatic lens

Declension

Declension of aplanat

	singular	plural
nominative	aplanat	aplanaty
genitive	aplanatu	aplanatów
dative	aplanatowi	aplanatom
accusative	aplanat	aplanaty
instrumental	aplanatem	aplanatami
locative	aplanacie	aplanatach
vocative	aplanacie	aplanaty

Derived terms

adjective

• aplanatyczny

 

Further reading

• aplanat in Polish dictionaries at PWN

Romanian

Etymology

Past participle of aplana.

Noun

aplanat n (plural aplanaturi)

1. calming

Declension

Declension of aplanat

	singular		plural
	indefinite articulation	definite articulation	indefinite articulation	definite articulation
nominative/accusative	(un) aplanat	aplanatul	(niște) aplanaturi	aplanaturile
genitive/dative	(unui) aplanat	aplanatului	(unor) aplanaturi	aplanaturilor
vocative	aplanatule		aplanaturilor

Verb

aplanat (past participle of aplana)

1. past participle of aplana

References

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