An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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concavo-convex lens
  عدسی ِ کاو-کوژ  
adasi-ye kâv-kuž (#)
Fr.: lentille concavo-convexe  

A type of → convergent lens that is concave on one surface and convex on the opposite surface. Also called → meniscus lens. Meniscus lenses are used most often in conjunction with another lens to produce an optical system of a longer or shorter → focal length than the original lens.

See also: → concave; → convex; → lens.