aspheric

aspheric
or aspherical adjective Date: circa 1922 departing slightly from the spherical form especially in order to correct for spherical aberration <
an aspheric lens
>

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • aspheric — [ā΄sfir′ik] adj. designating or of a lens or mirror made so that it is not perfectly spherical, as to minimize spherical aberration: also aspherical * * * a·spher·ic (ā sfîrʹĭk, ā sfĕrʹ ) also a·spher·i·cal ( ĭ kəl) adj. Varying slightly from… …   Universalium

  • aspheric — [ā΄sfir′ik] adj. designating or of a lens or mirror made so that it is not perfectly spherical, as to minimize spherical aberration: also aspherical …   English World dictionary

  • aspheric — Denoting a paraboloidal surface, especially of a lens or mirror, that eliminates spherical aberration. [G. a priv. + sphaira, sphere] * * * aspher·ic ( )ā sfi(ə)r ik, sfer or aspher·i·cal i kəl adj departing slightly from the spherical form esp.… …   Medical dictionary

  • aspheric — adjective aspherical …   Wiktionary

  • aspheric — adj. having a slight spherical variation (i.e. on a lens) …   English contemporary dictionary

  • aspheric — adjective varying slightly from a perfectly spherical shape • Syn: ↑aspherical • Similar to: ↑rounded • Topics: ↑optics …   Useful english dictionary

  • Aspheric lens — An aspheric lens or asphere is a lens whose surfaces have a profile that is neither a portion of a sphere nor of a circular cylinder. In photography, a lens assembly that includes an aspheric element is often called an aspherical lens.The asphere …   Wikipedia

  • Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia

  • Wing mirror — Dual contour wing mirror. Large inboard convex surface is separated by visible line from small outboard aspheric surface …   Wikipedia

  • microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

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