Imaging Infrared System with Extended Depth of Field Focusing

The objective of this project is to commercialize the Dual Band Extended Depth of Field Telescope System that is an innovative optical detection and imaging system that allows battlefield imaging through smoke, dust and fog obscurants in the 10 micron wavelength range. The system employs a dual band, multi-mode, diffraction-limited, infrared and visible telescope that can operate either in a passive mode or in an active mode using 10.6 micron laser illumination. This is the first system of its kind including the following innovative capabilities: 10 times improvement in the depth of field as compared to standard optical systems, uncooled microbolometer array for ease of operation, elimination of cat’s eye reflection, use of narrow band filter in the active mode of operation to improve signal to noise performance, and computer controls for automated operation. The system is small, portable and designed for battlefield environments. The primary mirror is 10 inches in diameter. Low cost is achieved through small size and use of state of the art commercially available components. The system operates in the range from 0.2 km to infinity with a minimum of focus adjustment required because of the extended depth of field capability. A closer range of operation is possible with one focus adjustment.