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Axial Aberrations of Lenses

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Book Id: WPLBN0003266247
Format Type: PDF eBook :
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Reproduction Date: 2011

Title: Axial Aberrations of Lenses  
Author:
Volume: Volume: Bulletin of the Bureau of Standards, Vol. 14, 341-369 (1918) Scientific Paper 311 (S311)
Language: English
Subject: lenses and optical systems, lenses and optical systems
Collections: Periodicals: Journal and Magazine Collection, Periodicals: Journal and Magazine Collection
Historic
Publication Date:
1918
Publisher: National Bureau of Standards

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Axial Aberrations of Lenses. (1918). Axial Aberrations of Lenses. Retrieved from http://members.worldlibrary.net/


Description
Description: A description of the errors which affect the definition of a lens, viz. (i) axial chromatic aberration, (ii) oblique chromatic aberration, (iii) spherical aberration and its variation with colour, (iv) zonal variation of equivalent focal length (sine condition), (v) curvature of field, (vi) astigmatism, (vii) distortion. The relative importance of these errors in the different types of lenses is discussed. Hartmann's method of objective testing is extended so that one set of measurements may give all the important central errors - spherical aberration, variation of e.f.l., and axial and oblique achromatism. The accuracy of the method is discussed at length, and the results of a series of measurements made by it are given in the form of curves showing, for 17 different lenses of various%

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