Optical detection device

Details Optical detection device Optical detection device

1990-06-04

1992-09-01

Johnson, Stephen

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

F42C 1302

Patent

active

051429853

ABSTRACT:
An advanced optical sensor for determining the stand-off distance from a trajecting container to a target utilizes various checks and filters to eliminate false detonations caused by glint and counter-measures. The sensor is comprised of a transmitter, a receiver, and a wave generator. The wave generator generates a unique wave form which is relayed to both the receiver and the transmitter. The light emitted from the transmitted follows a pattern defined by the wave generator. When light is received by the receiver, a synchronous detector coupled to the wave form generator determines if the return light has a pattern correlating with the unique wave form from the wave generator. If so, the associated electric signal in the receiver must pass a predetermined threshold for a predetermined period of time before the sensor will generate a detonate signal.

REFERENCES:
patent: 3554129 (1971-01-01), Alpers
patent: 4309946 (1982-01-01), Block
patent: 4991509 (1991-02-01), Smith

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