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International Journal of Optics
Volume 2017 (2017), Article ID 8730890, 5 pages
Research Article

Effect of Discrete Levels Width Error on the Optical Performance of the Diffractive Binary Lens

Higher Institute for Applied Sciences and Technology, Damascus, Syria

Correspondence should be addressed to Manal Alshami

Received 8 December 2016; Accepted 27 December 2016; Published 17 January 2017

Academic Editor: Chenggen Quan

Copyright © 2017 Manal Alshami et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The effects of discrete levels width error developed by thin film deposition on the optical performance of diffractive binary germanium lens with four discrete levels are investigated using nonsequential mode in the optical design code ZEMAX. The thin film deposition technique errors considered are metallic mask fabrication errors. The peak value of the Point Spread Function (PSF) was used as criterion to show the effect of discrete levels width error on the optical performance of the four-level binary germanium lens.