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anastigmatic

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anastigmatic


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Anastigmatic  \An*as`tig*mat"ic\,  a.  [Pref.  an-not  +  astigmatic.] 
  (Optics) 
  Not  astigmatic;  --  said  esp.  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. 
 
  From  WordNet  r  1.6  [wn]: 
 
  anastigmatic 
  adj  :  pertaining  to  a  lens  or  lens  system  free  of  astigmatism 
  (able  to  form  point  images)  [syn:  {stigmatic}] 




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