Patent ID: 6153878
Filing Date: 2000-11-28
Classification: G01S

Abstract:
Device for locating objects penetrating into a region of space to be monitored, comprisinga housing provided with a window,said housing containing a transmitter and a receiver for optical radiation as well as a rotatable optical deflecting device with a transmitting deflecting mirror as well as a receiving deflecting mirror,said transmitting deflecting mirror being rotatable and having a mirror surface and a rotation axis inclined with respect to said mirror surface,a beam of optical radiation emerging through said window in the housing being directed by the transmitting deflecting mirror into the region of space to be monitored, andradiation reflected from the region of space and incident through said window being directed by the receiving deflecting mirror onto said receiver,wherein said window has the shape of a section of a sphere, said sphere having as centre the point of intersection of said rotation axis with the optical axes of the incident and emerging beams,said receiving deflecting mirror being arranged perpendicular to said transmitting deflecting mirror, andsaid transmitting and receiving deflecting mirrors being arranged at an angle of 45.degree. to the rotation axis.