Embedded radial fired laser igniter
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsStephen Redington, John Hirlinger, Gregory Burke
Life of this patent
Estimating the term…
Abstract
A laser ignition assembly comprises first and second mounting surfaces opposed to each other. A central cavity is formed through the surfaces and sized to receive energetic material therein. A vertical solder bridge is formed between the surfaces and an edge emitting laser diode disposed between the surfaces. The laser diode is oriented such that a light fluence therefrom is directed in a radial direction into the central cavity. The surfaces can be circuit boards, e.g., copper clad, rigid circuit boards, and have an annular shape. The central cavity can be further defined by an interboard gap between the surfaces. The ignition assembly can fit within a primer cup of a munition.
Claims12
A laser ignition assembly comprising:
- a first mounting surface and a second mounting surface, said first and second mounting surface opposed to each other;
- a central cavity formed in the first mounting surface and second mounting surface, said central cavity sized and dimensioned to receive energetic material;
- a vertical solder bridge formed between the first mounting surface and second mounting surface;
- and
- an edge emitting laser diode disposed between the first mounting surface and the second mounting surface and oriented such that a light fluence from said edge emitting laser diode is directed in a radial direction into the central cavity.
A laser ignition assembly comprising:
- a first circuit board having a bottom surface and a second circuit board having a top surface, said top surface and bottom surface being opposed to each other and wherein the first circuit board and the second circuit board are annular-shaped;
- a central cavity defined by a hole in each of the first circuit board and the second circuit board, said central cavity sized and dimensioned to receive energetic material;
- a vertical solder bridge formed between the first circuit board and second circuit board;
- and
- an edge emitting laser diode surface mounted to the bottom surface and the top surface and oriented such that a light fluence from said edge emitting laser diode is directed in a radial direction into the central cavity.
Dependencies are inferred from the claim text.