Multi-spectral MEMS projector for testing imaging seekers

The goal is to develop a dual-waveband (visible and mid-wave infrared) flickerless scene projector based on membrane-mirror-on-VLSI spatial light modulator technology. Two modulators are combined in a novel zero-order block spatial filtering system to achieve true simultaneous dual-band scene projection. The modulators employ a spatially continuous deformable mirror surface that does not produce the diffraction and scattering artifacts of discrete pixels. They also offer continuous analog gray-scale light modulation that gives a more realistic rendition of the scene than the pulse-width-modulation scheme offered by others. The Phase II program: (1) develops modifications to our existing high-voltage VLSI circuit substrates, (2) re-engineers the modified membrane-mirror-on-VLSI modulator for low-voltage (~ 40V) operation at visible and mid-infrared wavelengths, (3) develops the scene-generation software and hardware interfaces needed to project simultaneous dual-band scenes, (4) analyzes and optimizes the trade-space parameters for various scene projection needs, and (5) begins exploratory work on commercial product development based on the technology. Phase II projector performance goals include: 2,000:1 contrast ratio, 1000x1000 pixels, 120 Hz framing rate and flickerless operation with at least a 6° field of view.