An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Barlow lens
  عدسیِ بارلو  
adasi-ye Barlow (#)
Fr.: lentille de Barlow  

A → negative lens placed in a telescope between the → objective and the → ocular. Its diverging action reduces the convergence of the light cone, forming a larger image at a slightly greater distance.

See also: Peter Barlow (1776-1862), English physicist; → lens.