converging lens

noun

, Optics.

1. a lens that converts parallel rays of light to convergent rays and produces a real image.

Example Sentences

Aristophanes, the Greek playwright, refers to a burning glass, a primitive converging lens that might have worked as a magnifier, but he lived more than a thousand years later and I think no ancient Greek burning glasses have ever been found.

From New York Times

I placed a large converging lens in the sunbeams passing through a room, and observed the place where the rays were brought to a focus behind the lens; then shading the lens, I placed a clear cube of ice so that the point of convergence of the rays might fall within it.

From Project Gutenberg

Intercepting the luminous portion of his spectrum he brought, by a converging lens, the ultra-red rays to a focus, but by this condensation he obtained no light.

From Project Gutenberg

Toward this aperture there may be moved either a converging lens of five dioptries or a diverging lens of the same diameter, but of six dioptries.

From Project Gutenberg

If, therefore, a beam that has been rendered conical by a converging lens be sent through the spar so that the central ray of the cone passes along the axis, this ray only will escape double refraction.

From Project Gutenberg