NON-CONTACT AMMUNITION TARGET SENSOR Russian patent published in 2022 - IPC F42C13/02 F42C19/00 G01S17/04 

FIELD: armaments.

SUBSTANCE: invention relates to the field of armaments, namely to a non-contact sensor target ammunition. The non-contact sensor of the target of the ammunition contains several optical units, each of which monitors the appearance of the target in its sector of space. Each optical block contains a receiving channel with a focusing lens, a light filter and a photodetector and an emitting channel with an optical radiation source, a collimating lens, a beam splitting system and a protective window. The sensor contains an electronic unit, the number of pairs of inputs and outputs of which is equal to the number of optical units. The output of each pair is connected to the source of optical radiation, and the input to the photodetector of the optical unit. Each source of optical radiation contains two laser diodes with emitting pads, which are located symmetrically with respect to the plane of symmetry passing through the axis of the ammunition. The axis of each emitting area, parallel to the plane of the P-N-junction of the laser diode glow body, is parallel to the plane of symmetry. The radiation axes of laser diodes converge with the angle α between the axes, and the axis of the radiative channel coincides with the bisector of this angle. The collimating lens and the beam splitting system are made in the form of a combined optical element, the convex surface far from the laser diodes has the shape of a straight cylinder with a guide in the form of an arc of a circle of radius R. The axis of the straight cylinder is perpendicular to the axis of the radiating channel, lies in the plane passing through the radiation axes of the laser diodes, and is located at such a distance from the emitting areas that the focal plane of the surface in the form of a straight cylinder passes through the centers of the emitting areas, and the convex surface faces the laser diodes. The focal plane has the form of a straight hyperbolic cylinder, the axis of which is perpendicular to the plane passing through the radiation axes of the laser diodes, and the guide lies in this plane symmetrically with respect to the axis of the radiating channel and has the form of a hyperbola described by the equation: Y²=2⋅p⋅X-(1-ε²)⋅X², where the values ​​of p, ε, R and α are chosen so that when the radiation of laser diodes passes through the indicated surface in the plane passing through the radiation axes of the laser diodes, the summation and formation of the radiation of laser diodes into a continuous radiation pattern of optical block with a given angular width is ensured. The axes and planes of symmetry of the diagrams of sensitivity and directivity of the radiation of the optical block are parallel. The sensitive element of the photodetector has a rectangular shape, its long axis is parallel to the plane passing through the radiation axes of the laser diodes. The angular width of the receiving sensitivity diagram of the optical unit in this plane exceeds the corresponding angular width of the radiation pattern of the optical unit in the parallel plane by 5 to 10%, and in the orthogonal direction by 30 to 50%.

EFFECT: increasing the probability and range of detection of small targets, minimizing the size of the target sensor and simplifying its settings.

2 cl, 14 dwg