anastigmatic

2 definitions found

anastigmatic - Collaborative International Dictionary of English v.0.48 :

  Anastigmatic \An*as`tig*mat"ic\, a. [Pref. an-not + astigmatic.]
     (Optics)
     Not astigmatic; free of astigmatism; -- pertaining to a lens
     or lens system, and used especially of a lens system which
     consists of a converging lens and a diverging lens of equal
     and opposite astigmatism but different focal lengths, and
     sensibly free from astigmatism.
     [Webster 1913 Suppl. + WordNet 1.5]

anastigmatic - WordNet (r) 2.1 (2005) :

  anastigmatic
      adj 1: pertaining to a lens or lens system free of astigmatism
             (able to form point images) [syn: anastigmatic,
             stigmatic]
      2: not astigmatic [syn: anastigmatic, stigmatic] [ant:
         astigmatic]