Aplanatic
free from spherical aberration and coma.
Historical Examples
A lens in which the spherical aberration is corrected is said to be aplanatic.
An Elementary Text-book of the Microscope John William Griffith
aplanatic triplets 64-68 can only be used on stands with rack and pinion adjustment.
Microscopes and Accessory Apparatus Ernst Leitz
adjective
(of a lens or mirror) free from spherical aberration
aplanatic ap·la·nat·ic (āp’lə-nāt’ĭk)
adj.
Of or relating to an optical lens that is free from chromatic or spherical aberration.
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