Focusing optical explosive initiator and initiator window
US4934804A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1989 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Jan 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The novel optical explosive initiator employs a window of a new type. The window hermetically seals the initiator explosive and is a transparent preferably monolithic block or cylinder of glass or the like solid material having a mirrored convex entrance end in the configuration of a segment of a spheroid, paraboloid, ellipsoid or hyperboloid and having an unmirrored opening therethrough along the longitudinal axis of the cylinder. The opposite exit end of the cylinder is mirrored and is perpendicular to the cylinder longitudinal axis and is at least nearly flat, preferably entirely flat. It includes an unmirrored opening along the longitudinal axis of the cylinder. An optical fiber transmitting light, such a laser light, can be positioned adjacent to the entrance opening. Light passing therethrough and into the cylinder is reflected from the flat mirrored end back to the mirrored convex end and is focused to a concentrated beam of high intensity which focused beam then passes out the exit opening to an explosive initiator. Therefore, much less power is needed to initiate the desired explosive reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.