ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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9
Issue
vol 60 / SEPTEMBER, 2017
Article
UDC 681.7

CHROMATIC PROPERTIES OF MANGIN MIRROR OBJECTIVE IN SEVERAL RANGES OF A SPECTRUM

M. P. Egorenko
Siberian State Academy of Geodesy, Department of Optical-Electronic Devices; Assistant


V. S. Efremov
Siberian State Academy of Geodesy, Department of Optical-Electronic Devices;


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Abstract. Zinc selenide catadioptric lenses for 0,5—12 μm range are considered. Analysis of chromatic properties of Mangin mirror simultaneously in both visible and thermovision (3—5 and 8—12 μm) spectral ranges are carried out for various combinations of construction parameters. Plots of chromatic sums vs width and curvature radius of optical surfaces are presented. Areas of minimal variation of chromatic sums with construction parameters are determined for the best compensation of chromatic aberrations in the system of ”collecting lens with Mangin mirror + meniscus“.
Keywords: multispectral, catadioptric, Mangin mirror, chromatic aberrations.