There are lenses discretely built in watches, ties, cigarettes, lighters, and other forms of disguise.
So we got a compressor and we would literally pump air into each of the four cameras so we could blow water off the lenses.
The tops of the lenses were tinted blue and the bottoms tinted pink.
These lenses white out my eyes entirely except for a small black spot in the center, which I see through.
One reason for that is filmmakers shot with 16mm lenses on hand-cranked cameras for optimum authenticity.
It was in pressing together two lenses of very large and known radius that Newton measured the lengths of light-waves.
The oculist from whom you obtained your lenses will tell you their magnifying power.
The curved surfaces of lenses are usually portions of spheres.
Finally the lenses have to be centred, an essential operation in this case.
The eyes of sea-urchins are rather highly developed, having corneæ, retinæ, and lenses.
1690s, "glass to regulate light rays," from Latin lens (genitive lentis) "lentil," on analogy of the double-convex shape. See lentil. Of the eye from 1719.
In the vernacular of the photographer, anyone crowding to the front of a group, staring into the lens, or otherwise attracting attention to himself is known as a "lens louse." ["American Photography," vol. 40, 1946; the term dates from 1915]
n. pl. lens·es
A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which are curved, by means of which light rays are refracted so that they converge or diverge to form an image.
A transparent, biconvex body of the eye between the iris and the vitreous humor that focuses light rays entering through the pupil to form an image on the retina.