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Proceedings Paper

Synthetic diamond lenses for multi-spectral imaging
Author(s): F. R. Faulkner; A. M. Bennett; D. J. Twitchen
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Paper Abstract

Traditionally the extreme hardness of diamond materials has made the machining of diamond optical components exceptionally difficult and limited applications to mostly flat components. Recent advances in diamond processing technology have made it possible to fabricate curved optical components or lenses in single crystal and polycrystalline diamond. This paper analyses a multi-spectral infrared imaging system incorporating a diamond lens and compares performance to equivalent systems that use other common infrared optical materials. Due to the broad transmission spectrum of diamond, which ranges all the way from the UV to microwave, these curved optics could find use in many different imaging applications throughout the electro-magnetic spectrum. Consideration is given to other advantages that diamond brings to the multi-spectral imaging application including small variations in refractive index as a function of both wavelength and temperature, a large Abbe number and material resilience under harsh conditions. As the development of large-area single crystal (SC) chemical vapour deposition (CVD) diamond advances, SC diamond lenses for multispectral imaging become a real possibility, with a number of advantages that we present in this paper.

Paper Details

Date Published: 3 March 2020
PDF: 11 pages
Proc. SPIE 11276, Optical Components and Materials XVII, 1127612 (3 March 2020); doi: 10.1117/12.2547356
Show Author Affiliations
F. R. Faulkner, Element Six (UK) Ltd. (United Kingdom)
A. M. Bennett, Element Six (UK) Ltd. (United Kingdom)
D. J. Twitchen, Element Six (UK) Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 11276:
Optical Components and Materials XVII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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