apodization

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apodization

(ap-ŏ-di-zay -shŏn) Any process suppressing the secondary maxima of a diffraction pattern, such as the faint rings around the Airy disk of an optical image; this allows finer detail to be resolved. It may be achieved, for example, by progressively reducing the transmission of the telescope from the center of the aperture to its periphery.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

apodization

[‚a·pə·də′zā·shən]
(electronics)
A technique for modifying the response of a surface acoustic wave filter by varying the overlap between adjacent electrodes of the interdigital transducer.
(optics)
The modification of the amplitude transmittance of the aperture of an optical system so as to reduce or suppress the energy of the diffraction rings relative to that of the central Airy disk.
(spectroscopy)
A mathematical transformation carried out on data received from an interferometer to alter the instrument's response function before the Fourier transformation is calculated to obtain the spectrum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
It also focuses on the benefits of AcrySof diffractive IOL which has adopted apodisation technology.
These impressive defocus capabilities are made possible by the lens' advanced optical structure, as it features a newly designed 11-bladed aperture and a unique optical apodisation lens element.
This is despite the fact that these lenses use apodisation phenomenon, which involves gradual transition of diffractive steps from the centre to periphery of IOL.
But in actual analysis, we can have the optimum effects only using the proper Apodisation functions, which are determined by different signals.
In practice, one also needs a time window, given by ad hoc apodisation functions.
The reflectance was measured and analysed using OMNIC v7.1 with Happ-Genzel apodisation and Mertz phase correction.
The reflectance was measured and analysed by using of OMNIC v7.1 software, with Happ-Genzel apodisation and Mertz phase correction.