plano-convex

[ pley-noh-kon-veks, -kon-veks, -kuhn- ]

adjective

, Optics.

1. pertaining to or noting a lens that is plane on one side and convex on the other.

plano-convex

/ ˌpleɪnəʊˈkɒnvɛks /

adjective

1. (of a lens) having one side convex and the other side plane

Word History and Origins

Origin of plano-convex¹

First recorded in 1655–65; plano- ¹ + convex

Example Sentences

Two large plano-convex lenses (C), called condensing lenses, are placed near the lamp to concentrate the light upon the "slide" S.

From Project Gutenberg

In fact, a plano-convex crystal lens has been found among the ruins of Nineveh.

From Project Gutenberg

In most plano-convex examples, the plane face is unmodified except for retouch.

From Project Gutenberg

The two examples with plano-convex cross-sections were unmodified on the plano face except for retouch along the edges.

From Project Gutenberg

The oldest type, whether baked or crude, is plano–convex in form, and uninscribed.

From Project Gutenberg