“anastigmatic”的英文意思_释义_用法

单词

anastigmatic

释义

anastigmatic, a.|ænəstɪgˈmætɪk|
[f. an- 10 + astigmatic a.; cf. G. anastigmatisch and stigmatic a. 9.]
Not astigmatic; free from astigmatism: applied to a compound lens so constructed as to correct the astigmatic aberration.
1890P. Rudolph Brit. Pat. 6028 1 It is..necessary to choose the ratios of the single lenses..in such a manner that the opposed astigmatic differences are of the same magnitude, in view of attaining compensation of this astigmatism, or anastigmatic correction of the entire objective.1893Year-Bk. Photogr. 10a (Advt.), Zeiss' Patent Anastigmatic Lenses..are the result of calculations with the new Jena Glass.1897Outing (U.S.) XXX. 340/2 The lens must be one of the almost faultless anastigmatic type.1901Brit. Jrnl. Photogr. 22 Nov. 744/1 The anastigmatic flatness of field.1902[see stigmatic a. 9].1953Electronic Engin. XXV. 138/1 Anastigmatic lenses are employed in this unit so that a high degree of optical accuracy is obtained.

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