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Proceedings Paper

Diffractive lenses for dual-waveband IR
Author(s): Michael Owen Lidwell
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Paper Abstract

Plots of the spectral shift of focus over the middle, 3 - 5 micrometers (MWIR), and far, 8 - 12 micrometers (LWIR), infrared wavelengths are presented for thin lenses using various combinations of optical material and employing a diffractive surface cut as a kinoform. Lens examples are given for small field of view aplanats, resolving a tenth of a milliradian and employing a minimal number of lens elements. Particular advantages of the use of the hologram are considered together with some potential problems.

Paper Details

Date Published: 23 August 1996
PDF: 11 pages
Proc. SPIE 2774, Design and Engineering of Optical Systems, (23 August 1996); doi: 10.1117/12.246678
Show Author Affiliations
Michael Owen Lidwell, Pilkington Optronics (United Kingdom)

Published in SPIE Proceedings Vol. 2774:
Design and Engineering of Optical Systems
Joseph J. M. Braat, Editor(s)

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