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Words related to lens

lens
L l

  • intraocular lens

    a plastic lens implanted surgically to replace the eye's natural crystalline lens, usually because the natural lens has developed a cataract.

  • converging lens

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

  • converter

    A converter is a device that changes something into a different form.

  • diverging lens

    a lens that causes a beam of parallel rays to diverge after refraction, as from a virtual image; a lens that has a negative focal length.

  • reflex camera

    a camera in which the image appears on a ground-glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single-lens reflex camera) light passes through the same lens to both the ground glass and the film, while in another type (twin-lens reflex camera) light passes through one lens (viewing lens) to the ground glass and through a second lens (taking lens) to the film, the lenses being mechanically coupled for focusing.

  • telephoto lens

    a lens constructed so as to produce a relatively large image with a focal length shorter than that required by an ordinary lens producing an image of the same size: used to photograph small or distant objects.
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