Authentication device

Details Authentication device Authentication device

1984-02-21

1986-01-28

Howell, Janice A.

Radiant energy

Luminophor irradiation

With ultraviolet source

G01N 2164

Patent

active

045673705

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.

REFERENCES:
patent: 3663813 (1972-05-01), Shaw
patent: 4127773 (1978-11-01), West
patent: 4146792 (1979-03-01), Stenzel et al.
patent: 4451521 (1984-05-01), Kaule et al.
patent: 4451530 (1984-05-01), Kaule et al.

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