Fiber optic security system including a fiber optic seal and an electronic verifier
US4447123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8243
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention includes a fiber optic seal (2) including a transparent seal body (4) having two spaced apart cavities (12,14,52,54) formed therein. Both ends (36,38) of a fiber optic cable (28) are respectively secured within the spaced apart cavities (12,14,52,54). A microprocessor-based electronic verifier (60) injects light into one of the cable ends (38) via a plurality of illumination light guides (20) fixed within the seal body (4) between an external surface (6) thereof and the illumination cavity (12). Light emitted from the remaining end (36) of the fiber optic cable (28) is transmitted from the detection cavity (14) to the exterior surface (6) of the sealed body (4) via a plurality of detection light guides (24) fixed within the seal body (4). Thereafter, the light is measured and converted by the electronic verifier (60) to provide a seal signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.