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Proceedings Paper

16-k infrared micromirror arrays with large-beam deflection and .10-mm pixel size
Author(s): Klaus Reimer; R. Engelke; Martin Witt; Bernd Wagner
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Paper Abstract

Infrared micromirror arrays with large pixel size and large deflection angle have been fabricated and characterized. The paper presents the technology for the realization of micromirror arrays up to 1282 elements, which have both, a pixel size of 100 micrometer X 100 micrometer and a mirror tilting angle of plus or minus 15 degrees. This specification requires an approx. 13 micrometer gap for electrostatic actuation. A metal surface micromachining process has been developed using thick resist UV-lithography, multiple electroplating, a copper sacrificial layer and a CMP process step. Using nonplanar electrodes the driving voltage of electrostatic actuators can be reduced by factors. Using an electrical biasing concept the address voltage could be reduced further. A double layer metalization makes single mirror addressing within the array possible. Applicable switching times and the motion behavior will be discussed using measurement data of a vibrometer.

Paper Details

Date Published: 2 September 1999
PDF: 9 pages
Proc. SPIE 3878, Miniaturized Systems with Micro-Optics and MEMS, (2 September 1999); doi: 10.1117/12.361270
Show Author Affiliations
Klaus Reimer, Fraunhofer-Institute for Silicon Technology (Germany)
R. Engelke, Fraunhofer-Institute for Silicon Technology (Germany)
Martin Witt, Fraunhofer-Institute for Silicon Technology (Germany)
Bernd Wagner, Fraunhofer-Institute for Silicon Technology (Germany)

Published in SPIE Proceedings Vol. 3878:
Miniaturized Systems with Micro-Optics and MEMS
M. Edward Motamedi; Rolf Goering, Editor(s)

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