AN OPTICAL SENSOR AND METHOD FOR DETECTING PROJECTILE IMPACT LOCATION AND VELOCITY VECTOR

An optical sensor (P) and method for detecting a projectile velocity vector includes optically detecting the arrival of a projectile. The sensor (P) includes a sandwich of a transparent layer (20) within two reflective layers (15), which in turn are within two opaque layers. An optical sensor structure includes a set of sensors positioned in respective planes, wherein at least two non-parallel optical sensors (P) are used for each trajectory dimension of interest that differs from the primary direction of motion of the projectile and one additional optical sensor (P) may be used for independent measurement of velocity attenuation. An optical sensor structure includes a set of sensors positioned in respective planes, wherein at least two of the optical sensors (P) are oriented in respective planes that tare parallel and potentially offset from each other. A tiling of the optical sensors or optical structures is also possible. An optical sensor and method for detecting a projectile velocity vector includes optically detecting the arrival of a projectile. The sensor includes a sandwich of a transparent layer within two reflective layers, which in turn are within two opaque layers. An optical sensor structure includes a set of sensors positioned in respective planes, wherein at least two non-parallel optical sensors are used for each trajectory dimension of interest that differs from the primary direction of motion of the projectile and one additional optical sensor may be used for independent measurement of velocity attenuation. An optical sensor structure includes a set of sensors positioned in respective planes, wherein at least two of the optical sensors are oriented in respective planes that are parallel and potentially offset from each other. A tiling of the optical sensors or optical structures is also possible. L'invention concerne un capteur optique et un procédé permettant de détecter un vecteur de vitesse de projectile qui consiste à détecter optiquement l'arrivée dudit projectile. Ce capteur comprend une couche transparente prise en sandwich entre deux couches réfléchissantes, qui à leur tour sont prises en sandwich entre deux couches opaques. Une structure de capteurs optiques comprend un ensemble de capteurs positionnés dans des plans respectifs, au moins deux capteurs optiques non parallèles étant utilisés pour chaque dimension de trajectoire d'intérêt différant du premier sens de déplacement du projectile et un capteur optique pouvant être util