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Definition of Aplanat
1. Noun. A lens that has been corrected for spherical aberration and coma in order to produce a rectilinear image. ¹
¹ Source: wiktionary.com
Definition of Aplanat
1. an distortion-free lens [n -S]
Lexicographical Neighbors of Aplanat
Literary usage of Aplanat
Below you will find example usage of this term as found in modern and/or classical literature:
1. Optics for Photographers by Hans Harting (1918)
"THE aplanat OF A. STEINHEIL AS REPRESENTATIVE OF THE SYMMETRICAL OBJECTIVES THE
SYMMETRICAL OBJECTIVE.— It is apparent that one can obtain a better ..."
2. Contributions to Photographic Optics by Otto Lummer (1900)
"For the numerous names under which other examples of the aplanat have been brought,
... This lens might be described aa an aplanat made of two equal new ..."
3. The Encyclopaedia Britannica: “a” Dictionary of Arts, Sciences, Literature edited by Hugh Chisholm (1911)
":he use of Jena glasses in the "Universal aplanat" (1886) the ponente of this
... The ' aplanat " had many advantages over TOUS doublets and the triplet, ..."
4. The Encyclopædic Dictionary of Photography: Containing Over 2,000 References by Walter E. Woodbury (1896)
"Steinheil also constructed a landscape aplanat, Fig. 261. ... The wide angle
aplanat, Fig. 262, is specially suitable for copying, as it gives perfect ..."
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