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The Collaborative International Dictionary
Lenses

Lens \Lens\ (l[e^]nz), n.; pl. Lenses (-[e^]z). [L. lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Cf. Lentil.] (Opt.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. [1913 Webster] Lenses

Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus.

Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other.

Crystalline lens. (Anat.) See Eye.

Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; -- so called from the inventor.

Multiplying lens or Multiplying glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied.

Polyzonal lens. See Polyzonal.

Wiktionary
lenses

n. (plural of lens English)

Usage examples of "lenses".

Then she remembered she didn't need to wear the lenses anymore so she took hers out, cleansed them once more before putting them back in the little container.

The whites and the intense green of her eyes with the filtering lenses were emphasized by the tan and dominated her face.

There were uniforms to be fixed: hair to be dyed gray, and the yellow contact lenses to be fitted so that this group would look more Catteni than what was called the first Botany expedition to Barevi had.

When he realized that gray hair and skin would not entirely present the team as Catteni, he finally managed to produce yellow contact lenses, cursing the need to improvise, since he had not considered his first attempt to be successful.

Higher up, she could see struggling figures behind the lights and lenses of the media deck.

By squeezing his eyelids, Keff activated the telephoto function in his contact lenses and took a closer look.

Plus wouldn't notice she had with the dark lenses covering her from brow to cheek but she had to watch its signings or be rude.

There're lenses in this kit to filter the color intensities to the bearable level.

She waited to place the lenses in her aching eyes to tone down the revolting color around her.

As Killashandra stoked her symbiont's craving, she read the instructions on the lenses, pausing long enough in her eating to slip them over her irises.

Killashandra was wearing the contact lenses recommended for Optheria's sunlight and wondered if the planet would be improved, viewed via augmented Ballybran vision.

Now, with the yellow eye lenses, she looked so much like a Catteni, she was almost nauseated.

His eyes might be sore, too, but maybe seeing the lenses in a cup of water might make him think he'd had the sense to do it for himself.

To believe that Zainal's crew was really Human, every one, including Kris, had to take out their yellow lenses and show the natural shade of skin on their upper arms and legs.

Of course, there'd be no such maneuverability as one can achieve with the ancient device, but the advantage is that I could set up those lenses on your own Star Stones.