Kellner eyepiece
[ kel-ner ]
nounOptics.
a Ramsden eyepiece having an achromatic lens, used in binoculars.
Origin of Kellner eyepiece
1After Carl Kellner (1826–55), German opticist and lens maker
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
Browse