| 摘要 |
FIELD: measurement equipment.SUBSTANCE: invention may be used in measurement equipment, systems of prevention of vehicles collision, navigation devices and systems of security alarm. The device comprises a control unit 3, a transmitting optical system 7, 8 with a radiation field 13, a receiving optical system 9 with a field of vision 14, made in the form of a cylindrical lens, in the focal plane of which there is a photodetector 6. The sensitivity area is formed by crossing of the field of radiation 13 and the field of vision 14. The device is equipped with a convex conical mirror 11, placed upstream the transmitting and receiving optical systems. The transmitting optical system is made of n identical pairs of perpendicularly crossed cylindrical lenses with matching main optical axes and focal planes, and also from n pulse laser sources of light installed in focal planes of appropriate pairs of cylindrical lenses arranged evenly along the circumference, in the centre of which there is a receiving optical system with the main optical axis, matching with the axis of symmetry of the mirror and parallel to the main optical axes of pairs of cylindrical lenses.EFFECT: increased quantity of sources of light serviced by one photodetector, compact arrangement of light sources, giving the shape of cone to the sensitivity zone.2 cl, 3 dwg |
