| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 10, 2015
|
|
|---|---|---|
| Article Number | 15055 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.2971/jeos.2015.15055 | |
| Published online | 29 November 2015 | |
Regular paper
Design and development of Binary Diffractive Germanium Lens by thin film deposition
Higher Institute for Applied Sciences and Technology Damascus, Syria
Received:
20
August
2015
Revised:
28
October
2015
Higher Institute for Applied Sciences and Technology Damascus, Syria The design and development of infrared (λ: [8]–[12] μm) binary diffractive germanium lens (BDGL) by two - steps thin film deposition (Physical vapor deposition (PVD) technique) is presented. The optical design of the required elements using the optical design code Zemax, the design of the 4 steps binary surface and its required metallic masks using the programming language Delphi, the procedures of fabrication, and the measurement of the resulting profile, were presented. The comparison between the refractive/diffractive lenses by measuring the minimum resolvable temperature difference (MRTD) shows the advantages of binary diffractive surface.
Key words: Diffractive / binary surface / thin film
© The Author(s) 2015. All rights reserved.
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