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Visual assessment of the influence of adverse diffraction orders on the quality of image formed by the refractive - diffractive optical system
G.I. Greisukh, E.G. Ezhov, S.V. Kazin, Z.A. Sidyakina, S.A. Stepanov

Penza State University of Architecture and Construction

PDF, 2308 kB

Full text of article: Russian language.

DOI: 10.18287/0134-2452-2014-38-3-418-424

Pages: 418-424.

Abstract:
Adverse impact of the diffraction orders on visually assess the quality of the image formed by refractive-diffractive optical system is investigated. It is shown that if the microstructure of diffractive lenses used in the optical system has a saw-tooth profile and brightness variations in the photographed scenes that are not extreme, the adverse diffraction orders practically not reduce of the system's frequency-contrast characteristic, and the halo does not have any significant negative impact for visual perception of the image.

Key words:
diffractive lens, relief-phase microstructure, adverse diffraction orders, image quality.

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