Optronic device of the panoramic watching a high speed

摘要

The problem that arises with the panoramic watching devices is the incompatibility between the limitation of the refreshing frequency of the frame and the need for a long integration time to allow the detection of modern threats. & br / the invention proposes an optical combination which the successive spraying, on the same detection matrix, of images of the bands of space, this combination comprising means of nutation of each strip at a speed greater than zero, at each integration of loads, the speed of movement of the scene. & br / a stand-by device according to the invention comprises a scanning head (1), driven in rotation by a rotary plate (2) so that the head (1) which sweeps along a line of sight (los) a field of view, at least one optical module (mo1 and mo2) forming an image by projection of the light flux (fi) on a detector (4) of the matrix type. Each module is defined an optical path comprising elements (51, m1, m '1, 52, m2, m ′ 2) and focusing (l1 to l3) on the detector (4) and a device nutation (20), in rotation around the focusing lens (l3).