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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 10 — Apr. 1, 2008
  • pp: 1585–1593

Metameric interference security image structures

Bill Baloukas and Ludvik Martinu  »View Author Affiliations


Applied Optics, Vol. 47, Issue 10, pp. 1585-1593 (2008)
http://dx.doi.org/10.1364/AO.47.001585


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Abstract

We study innovative interference security image structures based on metamerism. We have designed, fabricated, and evaluated different structures that can be used in transmission or in reflection. These metameric structures are either a combination of two different interference filters or of an interference filter and a noniridescent colored material. In the latter case, by closely matching the spectra, the sensitivity of the device to changes in light sources and observers is minimized. Because of the intrinsic color shift of interference filters, one can create a hidden image that appears at a specific observation angle. The presence of the hidden image, as well as in some cases of the noniridescent material, which serves as a color reference, increases the complexity of such devices while facilitating the user’s authentication process as well as automatized detection by using a laser at a specific angle. We present the design approach, analyze the filters’ sensitivity to deposition errors, and evaluate the performance of prototype devices prepared by dual ion beam sputtering.

© 2008 Optical Society of America

OCIS Codes
(310.1620) Thin films : Interference coatings
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Thin Films

History
Original Manuscript: November 29, 2007
Revised Manuscript: February 20, 2008
Manuscript Accepted: February 26, 2008
Published: March 31, 2008

Citation
Bill Baloukas and Ludvik Martinu, "Metameric interference security image structures," Appl. Opt. 47, 1585-1593 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-10-1585


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References

  1. 2007 Annual Report: Organized Crime in Canada (Criminal Intelligence Service Canada, 2007).
  2. “Counterfeit Medicines: Some Frequently Asked Questions,” (World Health Organization Regional Office for the Western Pacific, 2005), http://www.wpro.who.int/media_centre/fact_sheets/fs_20050506.htm (consulted 20 March 2007).
  3. R. van Renesse, Optical Document Security, 2nd ed. (Artech House, 1998),
  4. J. A. Dobrowolski, “Optical thin-film security devices” in [3], pp. 289-328.
  5. H. A. Macleod, Thin-Film Optical Filters, 3rd ed. (Institute of Physics, 2001). [CrossRef]
  6. L. Setlakwe and L. A. DiNunzio, “Comparative analysis of public opinion research in the U.S. and Canada,” Proc. SPIE 5310, 13-24 (2004). [CrossRef]
  7. J. A. Dobrowolski, F. C. Ho, and A. Waldorf, “Research on thin film anticounterfeiting coatings at the National Research Council of Canada,” Appl. Opt. 28, 2702-2717 (1989). [CrossRef] [PubMed]
  8. R. W. Phillips and A. F. Bleikolm, “Optical coatings for document security,” Appl. Opt. 35, 5529-5534 (1996). [CrossRef] [PubMed]
  9. R. W. Phillips and M. Nofi, “Colors by chemistry or by physics?” in Proceedings of the 42nd Annual Technical Conference of the Society of Vacuum Coaters (Society of Vacuum Coaters, 1999), pp. 494-499.
  10. P. G. Coombs, A. Argoitia, V. P. Raksha, and R. W. Phillips, “Integration of contrasting technologies into advanced optical security devices,” in Proc. SPIE 5310, 299-311 (2004). [CrossRef]
  11. G. Wyszecki and W. Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd ed. (Wiley, 2000).
  12. J. C. Taylor, B. A. Hardwick, W. K. Jackson, P. Zientek, and C. R. Hibbert, “Self-verifying security documents,” U.S. Patent 7,040,664 (9 May 2006).
  13. H. Hauser, W. H. Gerber, A. Iqbal, and P. Maurer, “Method of producing forgery-proof colored printed articles,” U.S. Patent 6,013,307 (11 January 2000).
  14. J. A. Dobrowolski, K. M. Baird, P. D. Carman, and A. Waldorf, “Optical interference coatings for inhibiting of counterfeiting,” Opt. Acta 20, 925-937 (1973). [CrossRef]
  15. B. Baloukas, S. Larouche, and L. Martinu, “Playing with light--the quest for new optically variable devices,” in Proceedings of the 48th Annual Technical Conference of the Society of Vacuum Coaters, (Society of Vacuum Coaters, 2005), pp. 381-386.
  16. B. Baloukas, S. Larouche, and L. Martinu, “Use of metameric filters for future interference security image structures,” in Proc. SPIE 6075, 60750T (2006). [CrossRef]
  17. R. W. Phillips and A. Argoitia, “Using vacuum roll coaters to produce anti-counterfeiting devices,” in Proceedings of the 48th Annual Technical Conference of the Society of Vacuum Coaters, (Society of Vacuum Coaters, 2005), pp. 145-152.
  18. B. Baloukas and L. Martinu, “Interference Security Image Structure”, U.S. Provisional Patent Application--60/745,404; Canadian Patent Application--VAL-475 (both 22 April 2006).
  19. Colorimetry, 3rd ed. (International Commission on Illumination (CIE), 2004),
  20. R. S. Berns, Billmeyer and Saltzman's Principles of Color Technology, 3rd ed. (Wiley , 2000).
  21. B. Hill, T. Roger, and F. W. Vorhagen, “Comparative analysis of quantization of color spaces on the basis of the CIELAB color-difference formula,” ACM (Assoc. Comput. Mach.) Trans. Graphics 16, 109-154 (1997). [CrossRef]
  22. M. R. Luo, G. Cui, and B. Rigg, “The development of the CIE 2000 colour-difference formula: CIEDE2000,” Color Res. Appl. 26, 340-350 (2001). [CrossRef]
  23. D. M. Mattox, “Particle bombardment effects on thin-film deposition: a review,” J. Vac. Sci. Technol. A 7, 1105-1114(1989). [CrossRef]
  24. Guide to Using WVASE32 (J. A. Woollam, 2001).
  25. S. Larouche and L. Martinu, “Openfilters: open-source software for the design, optimization, and synthesis of optical filters” Appl. Opt. 47, C219-C230 (2008). [CrossRef] [PubMed]
  26. E. D. Palik, Handbook of Optical Constants of Solids (Academic, 1985).

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