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Proceedings Paper

DMD-based infrared scene projection: comparison of MWIR and LWIR modulation transfer function
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Paper Abstract

We compare modulation-transfer-function (MTF) measurements for both mid-wave (MWIR) and long-wave IR (LWIR) bands for an IR-laser scene projector based on the digital micro-mirror device (DMD). We evaluate MTF for both IR-CO2 (10.6 micron) and IR-HeNe (3.39 micron) laser systems. This gives a quantitative image-quality criterion for verifying system performance using identical configurations of the DMD, lens, and screen. Different angles of illumination for the MWIR and LWIR were used, to give an output beam always perpendicular to the DMD. For this experiment a set of bar-target images was used to measure the residual modulation depth at the fundamental spatial frequency of the bars. As expected, the MWIR projector system has better MTF than the LWIR system because of diffraction effects occurring at the 17-micron pixels of the DMD.

Paper Details

Date Published: 4 August 2004
PDF: 4 pages
Proc. SPIE 5408, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing IX, (4 August 2004); doi: 10.1117/12.542749
Show Author Affiliations
William R. Folks, Univ. of Central Florida (United States)
Daniel Mullally, Univ. of Central Florida (United States)
Guy Zummo, Univ. of Central Florida (United States)
Arthur Robert Weeks, Univ. of Central Florida (United States)
Glenn D. Boreman, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 5408:
Technologies for Synthetic Environments: Hardware-in-the-Loop Testing IX
Robert Lee Murrer, Editor(s)

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