Imaging and display of human size scenes by long wavelength digital holography

This chapter is devoted to the description of Digital Holography (DH) in the infrared region. As we will see, this portion of the electromagnetic spectrum offers interesting and useful opportunities for imaging purposes under various points of view. Infrared Radiation Digital Holography (IRDH) is an almost unexplored research field. Recently, new breakthrough potentialities of IRDH have been demonstrated, allowing to overcome some of the most binding conditions of DH at visible wavelength. Hence, a completely new class of products can be provided, taking advantage of the longer wavelength employed, thus involving out of lab applications to be exploited in the safety field.