초록 ▼

A laser rangefinder including a reflector carried by a rotatable support and arranged to repetitively nod in elevation for deflecting the beam from a laser generator at an instant elevational angle dependent on the instant elevational position of the reflector so that the elevational nod of the refl

A laser rangefinder including a reflector carried by a rotatable support and arranged to repetitively nod in elevation for deflecting the beam from a laser generator at an instant elevational angle dependent on the instant elevational position of the reflector so that the elevational nod of the reflector and rotation of the support produce a helical scan pattern. A deflector positioned between the beam generator and reflector additionally deflects the beam before it impinges on the reflector to direct the beam toward a target regardless of the instantaneous elevational position of the nodding reflector. A beam receiver receives via the reflector any beam reflected back from a target hit by an outgoing beam. The rangefinder is combined with a surveillance scanner to form a surveillance system.

대표청구항 ▼

A laser rangefinder arrangement for determining range to a target comprising, in combination: (a) a nodding reflector, (b) a laser beam generator arranged to direct its beam onto the nodding reflector, the nodding reflector being arranged automatically to rotate and to nod repetitively in elevation

A laser rangefinder arrangement for determining range to a target comprising, in combination: (a) a nodding reflector, (b) a laser beam generator arranged to direct its beam onto the nodding reflector, the nodding reflector being arranged automatically to rotate and to nod repetitively in elevation whereby to produce an azimuth-elevational beam scan pattern, (c) non-mechanical beam elevation deflection means positioned in the path of the beam between the beam generator and the nodding reflector for additionally and instantly deflecting the beam in elevation relative to the instantaneous elevational position of the nodding reflector, (d) a beam receiver so positioned as to receive via the nodding reflector any beam reflected back from a target picked up by the outgoing beam the received beam indicating the range to the target, and (e) infra-red target detection means arranged automatically to trigger the laser beam generator when a target is detected and to apply a signal to the beam elevation deflecting means whereby to change the instant elevational angle of the beam so as to direct the beam on to the target regardless of the instant elevational position of the nodding reflector.