Claims
- 1. An optical system for tracking or verification of an item comprising:(a) a first material receptive to a first wavelength, the first material emitting a second wavelength when subjected to the first wavelength; (b) a second receptive to the second wavelength, the second material emitting a third wavelength when subjected to the second wavelength; (c) an energy source capable of emitting energy in the first wavelength; and (d) a detector capable of detecting the energy emitted in the third wavelength.
- 2. An object comprising the wavelength-specific material of claim 1.
- 3. An anti-counterfeit label comprising the wavelength-specific material of claim 1.
- 4. The system of claim 1, where a second detector detects the second wavelength.
- 5. A method of tracking or verifying an item comprising:(a) providing a first material receptive to a first wavelength, wherein said first material emits energy at a second wavelength when subjected to the first wavelength; (b) providing a second material receptive to the second wavelength, wherein said second material emits energy in a third wavelength when subjected to the second wavelength; (c) exposing the first material and second material to an energy source in the first wavelength; and (d) detecting the energy emitted in the third wavelength.
- 6. An object comprising a wavelength specific material of claim 5.
- 7. The method of claim 5, where a second detector detects the second wavelength.
Parent Case Info
This application claims the benefit of U.S. Provisional Application Ser. No. 60/082,632, filed Apr. 22, 1998.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3946203 |
Hecht et al. |
Mar 1976 |
A |
4485308 |
Rabatin |
Nov 1984 |
A |
4605849 |
Klien et al. |
Aug 1986 |
A |
5525748 |
Berson et al. |
Jun 1996 |
A |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/082632 |
Apr 1998 |
US |