Pyrotechnic priming device having a microlens set by a shape mem

Details Pyrotechnic priming device having a microlens set by a shape mem Pyrotechnic priming device having a microlens set by a shape mem

1990-04-30

1991-10-01

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Laser or light initiated

F42C 1900

Patent

active

050523007

ABSTRACT:
A miniature photopyrotechnic priming device having a hollow body (18) for receiving a pytotechnic substance (24). A rigid index gradient microlens (30) is mounted in the hollow body for focusing a high energy beam having a given wavelength onto the pyrotechnic substance. A shape memory alloy or metal ferrule (32) is located in the hollow body (18) which has a smaller internal diameter at ambient temperature than the diameter of the microlens. A connector (34) fixed to the body (18) secures the microlens-ferrule assembly and an optical fiber (12) carrying the laser beam.

REFERENCES:
patent: 3362329 (1968-01-01), Epstein
patent: 3528372 (1970-09-01), Lewis et al.
patent: 3618526 (1971-11-01), Baker
patent: 3724383 (1973-04-01), Gallaghan et al.
patent: 3812783 (1974-05-01), Yang et al.
patent: 3911822 (1975-10-01), Boling
patent: 4352542 (1982-10-01), Tydings
patent: 4743084 (1988-05-01), Manning
patent: 4870903 (1989-10-01), Carel et al.
patent: 4920418 (1990-06-01), Folsom

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