anastigmatic
/ˌanəstɪɡˈmatɪk
/adjective
(Of a lens system) constructed so that the astigmatism of each element is cancelled out.Devices that reduce technical difficulty and anastigmatic time when repairing large vessels such as the thoracic aorta would be beneficial....
- Important special cases of stationary anastigmatic mounts and their performance are presented.
- By increasing 2, as compared to the anastigmatic design, the coma can be cancelled completely.
Origin
Late 19th century: from an-1 'not' + astigmatic (see astigmatism).