Authentication device
US4567370A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1984 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Feb 21, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6484
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An authentication device for various items is disclosed. The authentication device includes a sample treated with at least two luminophors, each luminophor being ultra-violet energy excitable but one emitting in the visible and the other in the infrared spectral range, an excitation lamp to excite the treated sample, a pair of detectors one each for detecting radiation in the visible and in the infrared spectral range, a source of power, and a display coupled to the pair of detectors. Preferably, the authentication device is provided with an optional multi-channel fiber optic cable. Preferably, the authentication device is light and portable. Preferably, the source of power is a battery. Preferably, the battery is rechargeable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.