Low power pulsed laser simulator

Details Low power pulsed laser simulator Low power pulsed laser simulator

1995-12-21

1997-06-10

Donnelly, Jerome

Education and demonstration

Organized armed or unarmed conflict or shooting

Gunnery

434 11, 434 15, 434 16, 434 22, F41G 100

Patent

active

056369921

ABSTRACT:
The seeker of a guided missile may be tested by a simulator. The simulator mimics the reflection of a pulsed laser beam from a target. The simulator has a low power IR emitting LED 18. This IR emitting LED 18 is pulsed by an energy storing capacitor 22. The pulse is controlled by an SCR 16 driven by a pulse repetition oscillator 12. A collimating lens 26 collects light from the IR emitting LED 18 and directs it to the seeker. When being self tested, IR from the IR emitting LED 18 is reflected by a mirror 40 onto a detector 24. The output of the detector 24 is passed through a high pass filter 30. This removes signals from IR noise sources (fluorescent bulbs, the sun, incandescent bulbs), and passes only signals from the IR emitting LED 18. A first buffer 32, preferably an amplifier, provides power between the high pass filter 30 and the gate of a second SCR 34. This second SCR 34 drives a visible light LED 36 through a second buffer 38. The visible light LED 36 acts as a positive self test indication. Additional buffers, preferably of unity gain, are preferably provided to drive the pulse repetition oscillator 12 and the high pass filter 30.

REFERENCES:
patent: 4229103 (1980-10-01), Hipp
patent: 4464115 (1984-08-01), Simpson et al.
patent: 4959016 (1990-09-01), Lawrence

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