Anastigmatic

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From WordNet (r) 2.0 [wn]:

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