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ACTIVE PUSHBROOM IMAGING SYSTEM USING A MICRO-ELECTRO-MECHANICAL SYSTEM (MEMS) MICRO-MIRROR ARRAY (MMA)
ACTIVE PUSHBROOM IMAGING SYSTEM USING A MICRO-ELECTRO-MECHANICAL SYSTEM (MEMS) MICRO-MIRROR ARRAY (MMA)
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机译:使用微机电系统(MEMS)微镜阵列(MMA)的主动推扫式成像系统
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摘要
An active imaging system uses a MEMS Micro-Mirror Array to form and scan an optical beam over a first portion of scene within a first edge region of the field-of-view of the optical receiver in the direction of motion of the imaging system. In addition to tip and tilt control of the mirrors, the MMA may have piston control which can be used to minimize diffraction losses when focusing and scanning the beam, provide wavefront correction or to compensate for path length variations. The MMA may be partitioned into segments to independently form and scan a plurality of optical beams, which may be used to scan the first or different portions of the scene. The different segments may be provided with reflective coatings at different wavelengths to provide for multi-spectral imaging. The different segments may be used to combine multiple optical sources to increase power or provide multi-spectral illumination.
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