Huygens eyepiece

Huygens eyepiece

(hÿ -gĕnz) See eyepiece.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Huygens eyepiece

[′hī·gənz ¦ī‚pēs]
(optics)
An eyepiece in which there are two plano-convex lenses, and the plane sides of both lenses face the eye.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Using the scope's original 23-mm Huygens eyepiece and 2x Barlow to yield 78x, Jim found that "it didn't take long to suspect annularity.