System for acquiring image during conditions e.g. fog, with low level of light, for helmet display system used by pilot of aircraft, has merging unit for merging images from visible and short wave infrared sensors to generate final image

摘要

The system has a single focusing optics (2) focusing electromagnetic radiation (100) obtained from a scene to be displayed and having a wavelength included in a spectral detection band extending between 400 nanometer and 1.7 millimeter on a visible sensor (3) and a short wave infrared (SWIR) sensor (4). A separation unit (5) directs a radiation (102) toward the visible sensor and another radiation (103) toward the SWIR sensor. A processing unit (6) comprises a merging unit for merging images (11, 12) from the sensors to generate a final image (If) transmitted to a display unit (7).