ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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8
Issue
vol 60 / AUGUST, 2017
Article

DOI 10.17586/0021-3454-2017-60-8-764-769

UDC 621. 391

ANALYTICAL CONDITION OF CORRECTING SPHERICAL ABERRATION IN THE LENS WITH AXIAL INHOMOGENEITY OF THE REFRACTIVE INDEX

A. L. Sushkov
N. E. Bauman Moscow State Technical University, Department of Opto-Electronic Devices Research;


S. A. Gusev
GRINEXT Corp.; Engineer


Abstract. Axial distribution of the refractive index in glass lens is proposed as a mean for correction of spherical aberration. The function describing the refractive index distribution along the lens surface to correct the spherical aberration is derived for the case of remote object imaging at various relative aperture values. Angular coefficient of inclination of the axial distribution of refractive index is shown to be the decisive factor when correcting spherical aberration. The use of gradient media is supposed to be promising in the manufacture of optical elements with best light-transmission characteristics.
Keywords: lens, axial inhomogeneity of refractive index, spherical aberration

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