crown lens

noun Optics.

a lens made of crown glass, usually used as the converging lens component of an achromatic lens.

Origin of crown lens

First recorded in 1825–35

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British Dictionary definitions for crown lens

crown lens

noun

a lens made of optical crown, esp the optical-crown part of a compound achromatic lens

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012