Definition of anastigmatic in English:
anastigmatic
adjectiveˌanəstɪɡˈmatɪkˌænəstɪɡˈmædɪk
(of a lens system) constructed so that the astigmatism of each element is cancelled out.
Example sentencesExamples
- Important special cases of stationary anastigmatic mounts and their performance are presented.
- It is thus an object of this invention to provide a three mirror anastigmatic optical system employing conic mirrors wherein the system is off-axis in both aperture and field angle.
- A table of parameters for anastigmatic lenses is included.
- By increasing 2, as compared to the anastigmatic design, the coma can be cancelled completely.
- Devices that reduce technical difficulty and anastigmatic time when repairing large vessels such as the thoracic aorta would be beneficial.
Origin
Late 19th century: from an-1 'not' + astigmatic (see astigmatism).
Definition of anastigmatic in US English:
anastigmatic
adjectiveˌanəstiɡˈmadikˌænəstɪɡˈmædɪk
(of a lens system) constructed so that the astigmatism of each element is canceled out.
Example sentencesExamples
- Devices that reduce technical difficulty and anastigmatic time when repairing large vessels such as the thoracic aorta would be beneficial.
- It is thus an object of this invention to provide a three mirror anastigmatic optical system employing conic mirrors wherein the system is off-axis in both aperture and field angle.
- A table of parameters for anastigmatic lenses is included.
- By increasing 2, as compared to the anastigmatic design, the coma can be cancelled completely.
- Important special cases of stationary anastigmatic mounts and their performance are presented.
Origin
Late 19th century: from an- ‘not’ + astigmatic (see astigmatism).