| 释义 |
aplanatic, a.|æpləˈnætɪk|
[f. Gr. ἀπλάνητ-ος free from error (f. ἀ priv. + πλανά-ειν to wander) + -ic.]
Free from aberration; spec. applied to a compound lens which is free from spherical aberration or divergence of rays of light from the focus.
1794G. Adams Nat. & Exp. Phil. II. xxii. 468 As..[Blair] conceives that he has thus removed the aberration, he distinguishes his instrument by the term Aplanatic. 1867J. Hogg Microsc. i. ii. 26 An ‘aplanatic doublet’ consisting of a double convex lens and a meniscus. 1869Tyndall Light §165 A spherical lens cannot be rendered aplanatic. |