Portable product authentication device

• US 6,490,030 B1
• Filed: 01/18/1999
• Issued: 12/03/2002
• Est. Priority Date: 01/18/1999
• Status: Expired due to Term

• Current Assignee: Verification Technologies, Inc. (Sun Chemical, Inc.)
• Original Assignee: Verification Technologies, Inc. (Sun Chemical, Inc.)
• Inventors: Behringer, Friedrich, Vig, Rakesh, Gill, Richard P., Philips, J. Christopher
• Primary Examiner(s): Pham, Hoa Q.
• Application Number:
  US09/232,324
• Time in Patent Office: 1,415 Days
• Field of Search: 356/71, 356/317, 356/394, 356/318, 356/417, 382/115, 382/116, 382/117, 382/124-127, 340/825.34, 283/68, 283/69, 283/70, 250/227.26, 250/227.28, 455/411, 436/20, 436/24, 436/172
• US Class Current: 356/71
• CPC Class Codes: G01J 3/42 Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry beam switching arrangements G01J3/08
• CPC Class Codes: G01N 21/645 Specially adapted constructive features of fluorimeters
• CPC Class Codes: G01N 21/8507 Probe photometers, i.e. with optical measuring part dipped into fluid sample
• CPC Class Codes: G01N 2201/0221 Portable; cableless; compact; hand-held

Abstract

A portable product authentication device and method for analyzing key ingredients and the relative amounts of key ingredients in products which in turn enables authentication and monitoring products for authenticity, fraud and quality control is disclosed. Particular light-emissive compounds can be used to identify and quantitate the relative levels of key ingredients in the products. The invention includes a probe assembly for providing a source of light to irradiate a sample product, an optical detector to detect emitted light from the irradiated product and a controller to determine the authenticity or quality of the sample product by comparing the emitted light to a standard. A small sample of the product to be authenticated is tested on site (e.g., at the point of manufacture or at the point of distribution) thereby giving immediate feedback as to its authenticity or quality. The sample, together with the light-emissive compound may be placed on a chip. The chip, together with the small amount of sample is placed in the probe assembly.

Claims

1. A portable system for determining the authenticity of a sample, the system comprising:

a portable product authentication device comprising;

a base unit;

a probe assembly coupled to said base unit, with said probe assembly having a light source for irradiating the sample product to be authenticated with a predetermined wavelength of light;

an optical detector for detecting at least one emitted wavelength of light generated by the sample product in response to the irradiating wavelength of light to provide a sample characteristic; and

,

a controller disposed within said base unit and communicating with said probe assembly, said controller comparing said sample characteristic to a fingerprint, wherein said fingerprint comprises at least light emission intensity or intensity decay from at least one light-emissive compound in combination with a standard product; and

a chip adapted to receive the sample product and carry the sample product to said portable product authentication device for subsequent authentication, wherein said chip comprises;

a substrate, and

a plurality of different isolated light-emissive compounds attached to a surface of said substrate in a manner whereby the light-emissive compounds will interact with interaction partners, such interaction altering light emission from said light-emissive compounds versus light emission from said light-emissive compounds absent said interaction,

wherein the isolated light-emissive compounds are present in the absence of admixture with other substances,

wherein each of said different light-emissive compounds is attached at a location discrete from attachment of all other of said different light-emissive compounds, and

wherein said substrate is free of interference with light emission from said light-emissive compound in the presence of said interaction and in the absence of said interaction.

2. The system according to claim 1 wherein said light source is a fiber optic cable operatively connected to a light-emitting diode.

3. The system according to claim 1 wherein said light source is a light-emitting diode.

4. The system according to claim 1 wherein said optical detector is disposed within said probe assembly.

5. The system according to claim 1 wherein a fiber optic cable is disposed within said probe assembly and is operatively connected to said optical detector for receiving emitted light generated by the sample product and transmitting to said optical detector.

6. The system according to claim 1 further comprising a receptacle for interchangeably receiving one of a plurality of light sources, with each said light source being selected to emit a desired wavelength of light based on a desired sample product to be authenticated.

7. The system according to claim 1 wherein said probe assembly comprises an emission filter for filtering undesired wavelengths of light from said at least one emitted wavelength of light generated by the sample product in response to the irradiating wavelength of light.

8. The system according to claim 7 wherein said probe assembly is adapted to interchangeably receive one of a plurality of emission filters, with each said emission filter being selected to filter undesired wavelengths of light based on a desired sample product to be authenticated.

9. The system according to claim 1 wherein said probe assembly comprises a source filter for filtering undesired wavelengths of light generated from said light source.

10. The system according to claim 9 further comprising a receptacle for interchangeably receiving one of a plurality of source filters, with each said source filter being selected to filter undesired wavelengths of light based on a selected light source.

11. The system according to claim 1 wherein said optical detector detects a quantity of said at least one emitted wavelength of light generated by the sample product.

12. The system according to claim 1 wherein said optical detector detects a change in quantity over time of said at least one emitted wavelength of light generated by the sample product.

13. The system according to claim 1 wherein said controller is located at a site remote from said probe assembly.

14. The system according to claim 1 wherein said controller comprises a database of stored fingerprints.

15. The system according to claim 1 wherein said optical detector detects a characteristic of a sample known to be authentic to provide said fingerprint.

16. The system according to claim 1 wherein said optical detector performs a plurality of detections on a single sample product to be authenticated.

17. The system according to claim 1 wherein the sample product is one of a liquid sample product and a dry powder sample product.

18. The system according to claim 17 wherein said probe assembly further includes a receptacle adapted to receive said chip.

19. The system according to claim 1 wherein said probe assembly comprises a reflector to reflect light emitted from said light source toward said sample product.

20. The system according to claim 1 wherein said fingerprint includes a range of acceptable fingerprints.

21. The system according to claim 1 wherein said plurality is selected from the group consisting of three different light-emissive compounds, four different light-emissive compounds, five different light-emissive compounds, six different light-emissive compounds, seven different light-emissive compounds, eight different light-emissive compounds and nine different light-emissive compounds.

22. The system according to claim 21 wherein said light-emissive compounds are dyes.

23. The system according to claim 21 wherein said chip defines a plurality of microwells, and wherein said discrete location of attachment of each of said different light-emissive compounds is within a microwell.

24. The system according to claim 23 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds of the chip.

25. The system according to claim 21 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds on said chip.

26. The system according to claim 21 further comprising one or more markings on said chip to identify what different light-emissive compounds are on said chip.

27. The system according to claim 21 wherein said light-emissive compounds are covalently attached to said substrate.

28. The system according to claim 1 wherein said different light-emissive compounds on said chip are preselected and are at a preselected concentration to create a preselected pattern of light emission when said surface is contacted with a sample product that is authentic.

29. The system according to claim 28 further comprising a marking on said chip identifying said chip as specific for the standard product.

30. A portable system for determining the authenticity of a sample product, the system comprising:

a hand-held probe assembly for detecting a characteristic of the sample product to be authenticated, with said probe assembly comprising;

a probe body;

a light source disposed in said probe body for irradiating the sample product with a predetermined wavelength of light; and

,

an optical detector disposed in said probe body for detecting at least one emitted wavelength of light generated by the sample product in response to the irradiating wavelength of light to provide a sample characteristic, wherein said sample characteristic comprises at least light emission intensity or intensity decay from at least one light-emissive compound in combination with the sample product; and

a chip adapted to receive the sample product and carry the sample product to said probe assembly for subsequent authentication, wherein said chip comprises;

a substrate, and

a plurality of isolated different light-emissive compounds attached to a surface of said substrate in a manner whereby the light-emissive compounds will interact with interaction partners, such interaction altering light emission from said light-emissive compounds versus light emission from said light-emissive compounds absent said interaction,

wherein the isolated light-emissive compounds are present in the absence of admixture with other substances,

wherein each of said different light-emissive compounds is attached at a location discrete from attachment of all other of said different light-emissive compounds, and

wherein said substrate is free of interference with light emission from said light-emissive compound in the presence of said interaction and in the absence of said interaction.

31. The system according to claim 30 wherein said light source is a light-emitting diode.

32. The system according to claim 30 further comprising a light-emitting diode receptacle formed in said body for interchangeably receiving one of a plurality of light-emitting diodes, with each said light-emitting diode being selected to emit a desired wavelength of light based on a desired sample product to be authenticated.

33. The system according to claim 30 further comprising an emission filter disposed in said body for filtering undesired wavelengths of light from said at least one emitted wavelength of light generated by the sample product in response to the irradiating wavelength of light.

34. The system according to claim 33 further comprising an emission filter receptacle formed in said body for interchangeably receiving one of a plurality of emission filters, with each said emission filter being selected to filter undesired wavelengths of light based on a desired sample product to be authenticated.

35. The system according to claim 30 further comprising a source filter disposed in said body for filtering undesired wavelengths of light generated from said light source.

36. The system according to claim 35 further comprising a source filter receptacle formed in said body for interchangeably receiving one of a plurality of source filters, with each said source filter being selected to filter undesired wavelengths of light based on a selected light source.

37. The system according to claim 30 wherein said probe body includes a receptacle adapted to receive said chip.

38. The system according to claim 30 further comprising a reflector disposed in said body for reflecting light emitted from said light source toward said sample product.

39. The system according to claim 30 wherein said plurality is selected from the group consisting of three different light-emissive compounds, four different light-emissive compounds, five different light-emissive compounds, six different light-emissive compounds, seven different light-emissive compounds, eight different light-emissive compounds and nine different light-emissive compounds.

40. The system according to claim 39 wherein said light-emissive compounds are dyes.

41. The system according to claim 39 wherein said chip defines a plurality of microwells, and wherein said discrete location of attachment of each of said different light-emissive compounds is within a microwell.

42. The system according to claim 41 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds of the chip.

43. The system according to claim 39 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds on said chip.

44. The system according to claim 39 further comprising one or more markings on said chip to identify what different light-emissive compounds are on said chip.

45. The system according to claim 39 wherein said light-emissive compounds are covalently attached to said substrate.

46. The system according to claim 30 wherein said different light-emissive compounds on said chip are preselected and are at a preselected concentration to create a preselected pattern of light emission when said surface is contacted with a sample product that is authentic.

47. The system according to claim 46 further comprising a marking on said chip identifying said chip as specific for the standard product.

48. A portable system for determining the authenticity of a sample product, the system comprising:

a portable product authentication device comprising;

a base unit;

a probe assembly for detecting a characteristic of the sample product to be authenticated, said probe assembly contained within said base unit, said probe assembly comprising;

a light source for irradiating the sample product with a predetermined wavelength of light; and

,

an optical detector for detecting at least one emitted wavelength of light generated by the sample product in response to the irradiating wavelength of light to provide a sample characteristic; and

a controller disposed within said base unit and communicating with said probe assembly, said controller comparing said sample characteristic to a fingerprint, wherein said fingerprint comprises at least light emission intensity or intensity decay from at least one light-emissive compound in combination with a standard product; and

a chip adapted to receive the sample product and carry the sample product to said portable product authentication device for subsequent authentication, wherein said chip comprises;

a substrate, and

a plurality of isolated different light-emissive compounds attached to a surface of said substrate in a manner whereby the light-emissive compounds will interact with interaction partners, such interaction altering light emission from said light-emissive compounds versus light emission from said light-emissive compounds absent said interaction,

wherein the isolated light-emissive compounds are present in the absence of admixture with other substances,

wherein each of said different light-emissive compounds is attached at a location discrete from attachment of all other of said different light-emissive compounds, and

wherein said substrate is free of interference with light emission from said light-emissive compound in the presence of said interaction and in the absence of said interaction.

49. The system according to claim 48 wherein said sample is one of a liquid sample product and a dry powder sample product.

50. The system according to claim 48 wherein said probe assembly further includes a receptacle adapted to receive said chip.

51. The system according to claim 48 wherein said device performs a plurality of sample readings on said chip.

52. The system according to claim 48 wherein said plurality is selected from the group consisting of three different light-emissive compounds, four different light-emissive compounds, five different light-emissive compounds, six different light-emissive compounds, seven different light-emissive compounds, eight different light-emissive compounds and nine different light-emissive compounds.

53. The system according to claim 52 wherein said light-emissive compounds are dyes.

54. The system according to claim 52 wherein said chip defines a plurality of microwells, and wherein said discrete location of attachment of each of said different light-emissive compounds is within a microwell.

55. The system according to claim 54 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds of the chip.

56. The system according to claim 52 further comprising one or more markings on said chip for identifying said location of each of said different light-emissive compounds on said chip.

57. The system according to claim 52 further comprising one or more markings on said chip to identify what different light-emissive compounds are on said chip.

58. The system according to claim 52 wherein said light-emissive compounds are covalently attached to said substrate.

59. The system according to claim 48 wherein said different light-emissive compounds on said chip are preselected and are at a preselected concentration to create a preselected pattern of light emission when said surface is contacted with a sample product that is authentic.

60. The system according to claim 59 further comprising a marking on said chip identifying said chip as specific for the standard product.