lens Definition

  • 1a piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope)
  • 2the light-gathering device of a camera, typically containing a group of compound lenses
  • 3a transparent disc with one or both surfaces curved, forming a part of a device such as a camera or microscope and typically having a specified focal length

Using lens: Examples

Take a moment to familiarize yourself with how "lens" can be used in various situations through the following examples!

  • Example

    The lens of the camera was cracked.

  • Example

    She needs glasses with a stronger lens.

  • Example

    The microscope has several interchangeable lenses.

  • Example

    The telescope has a powerful lens that can see far into space.

lens Synonyms and Antonyms

Phrases with lens

  • fish-eye lens

    a wide-angle lens that takes in a broad, hemispherical image


    The photographer used a fish-eye lens to capture the entire room.

  • a thin plastic lens placed directly on the surface of the eye to correct vision


    She prefers wearing contact lenses over glasses.

  • a lens with a variable focal length, allowing the photographer to adjust the magnification of the subject


    The zoom lens on the camera allowed me to take close-up shots of the birds.

Origins of lens

from Latin 'lentil', because of the similarity in shape


Summary: lens in Brief

A 'lens' [lenz] is a curved piece of glass or other transparent material that can concentrate or disperse light rays. It is used in cameras, telescopes, microscopes, and magnifying glasses. 'Lens' has phrases like 'fish-eye lens,' which captures a broad image, and 'contact lens,' which corrects vision. The term also includes 'zoom lens,' which adjusts magnification.