File:Aberrations of long focus anastigmatic photographic objectives (IA aberrationsoflon19587unse).pdf
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[edit]Aberrations of long focus anastigmatic photographic objectives
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| Title |
Aberrations of long focus anastigmatic photographic objectives |
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| Volume | Scientific Papers of the Bureau of Standards, Vol. 19, p. 587-640 (1924) Scientific Paper 494 (S494) | |
| Publisher |
National Bureau of Standards |
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| Description |
No lens system gives perfect definition because of the inherent aberrations of spherical refracting surfaces. The aberrations of a centred lens system are denned, and the characteristic manner in which each aberration affects the image is discussed. Methods for the determination of the various aberrations of a photographic objective are described. The Hartmann method, for which a special camera was designed, was used for the measurement of spherical aberration and departure from the sine condition, while a lens-bench method was employed in the measurement of curvature of field, astigmatism, distortion, and lateral and axial chromatism. The aberrations of thirty-three photographic objectives of the anastigmatic type, made by different manufacturers, are presented graphically. The var Subjects: |
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| Language | English | |
| Publication date | 1924 | |
| Current location |
IA Collections: NBSScientificPapers; NISTresearchlibrary; fedlink; americana |
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| Accession number |
aberrationsoflon19587unse |
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 21:44, 27 August 2020 |  | 941 × 1,418, 66 pages (4.72 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection aberrationsoflon19587unse (User talk:Fæ/IA books#Fork8) (batch 1000-3000 #116679) |
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