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Proceedings Paper

Combination gratings
Author(s): Rene Staub; Wayne Robert Tompkin; Jean-Frederic Moser
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Paper Abstract

A combination grating is the diffractive relief structure resulting from the superposition of at least two gratings. For the case of two combined gratings, whose individual profiles are described by function f1 and f2, the resultant surface relief profile is described by f1 + f2. Typical examples are crossed gratings. Experimental and theoretical results for different combination gratings are presented, including examples which cannot be produced using standard holographic or ruling techniques. The applications include diffractive optical variable devices, which are applied to documents as visual high-security features.

Paper Details

Date Published: 7 May 1996
PDF: 8 pages
Proc. SPIE 2689, Diffractive and Holographic Optics Technology III, (7 May 1996); doi: 10.1117/12.239633
Show Author Affiliations
Rene Staub, Landis & Gyr Communications Corp. (Switzerland)
Wayne Robert Tompkin, Landis & Gyr Communications Corp. (Switzerland)
Jean-Frederic Moser, Landis & Gyr Communications Corp. (Switzerland)

Published in SPIE Proceedings Vol. 2689:
Diffractive and Holographic Optics Technology III
Ivan Cindrich; Sing H. Lee, Editor(s)

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