초록 ▼

A proximity fuze system includes an optical ranging apparatus, a detonation circuit controlled by the optical ranging apparatus, and an explosive charge detonated by the detonation cirtcuit. The optical ranging apparatus includes a pulsed laser light source for generating target ranging light pulses

A proximity fuze system includes an optical ranging apparatus, a detonation circuit controlled by the optical ranging apparatus, and an explosive charge detonated by the detonation cirtcuit. The optical ranging apparatus includes a pulsed laser light source for generating target ranging light pulses and optical reference light pulses. A single lens directs ranging pulses to a target and collects reflected light from the target. An optical fiber bundle is used for delaying the optical reference pulses to correspond to a predetermined distance from the target. The optical ranging apparatus includes circuitry for providing a first signal depending upon the light pulses reflected from the target, a second signal depending upon the light pulses from the optical delay fiber bundle, and an output signal when the first and second signals coincide with each other. The output signal occurs when the distance from the target is equal to the predetermined distance form the target. Additional circuitry distinguishes pulses reflected from the target from background solar radiation.

대표청구항 ▼

Optical ranging apparatus comprising: laser light pulse means for generating a series of target ranging light pulses and optical reference light pulses; means for directing the target ranging light pulses toward a target; means for collecting light pulses reflected from the target; optical delay mea

Optical ranging apparatus comprising: laser light pulse means for generating a series of target ranging light pulses and optical reference light pulses; means for directing the target ranging light pulses toward a target; means for collecting light pulses reflected from the target; optical delay means for delaying the optical reference pulses a time corresponding to a predetermined distance of the apparatus from the target; converter means for providing electrical signals corresponding to the light pulses reflected from the target, and signals corresponding to the light pulses from the optical delay means; and circuitry means for providing an output signal only when the signals corresponding to light pulses reflected from the target coincide with the signals corresponding to light pulses from the optical delay means, said output signal occurring only when the distance from the target is equal to the predetermined distance from the target.