Diffractive moiré features for optically variable devices

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 6075, Issue , 2006, Pages

  Schilling, Andreas ^a   Tompkin, Wayne R ^a   Staub, René ^a   Hersch, Roger D ^b   Chosson, Sylvain ^b   Amidror, Isaac ^b  

^a OVD Kinegram Corporation   (Switzerland)

^b EPFL   (Switzerland)

Author keywords

Band moir images; Diffractive moir ; Moir intensity profiles; Optically Variable Devices (OVDs)

Indexed keywords

ANIMATION; DIFFRACTIVE OPTICS; IMAGE PROCESSING; INTEGRATION; MICROSTRUCTURE; OPTICAL PROPERTIES; OPTICAL RESOLVING POWER; SECURITY SYSTEMS;

BAND MOIRÉ IMAGES; DIFFRACTIVE MOIRÉ; MOIRÉ INTENSITY PROFILES; OPTICALLY VARIABLE DEVICES (OVDS);

OPTICAL DEVICES;

EID: 33645975799     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.642910     Document Type: Conference Paper

References (20)

1. R.T. Wielandt, "The Evaluation of Document Fraud Resistance", in Optical Document Security; R. van Renesse (Ed.), Artech House, Boston, 1998 (second edition), Chapter 3.
2. "Improvements in printed matter for the purpose of rendering counterfeiting more difficult", United Kingdom Patent No. 1,138,011 (Canadian Bank Note Company), 12/1968.
3. R. L. van Renesse (Ed.), Optical Document Security. Artech House, Boston, 1998 (second edition); pp. 144-145.
4. http://www.syndtech.com/gssc/indicia.html
5. S. P. McGrew, "Anticounterfeiting method and device utilizing holograms and pseudorandom dot patterns," U.S. Patent No. 5,396,559, March 7, 1995.
6. I. Amidror and R. D. Hersch, "Authentication of documents and valuable articles by using moiré intensity profiles," U.S. Patent No. 6,819,775, issued November 16, 2004.
7. I. Amidror, "A new print-based security strategy for the protection of valuable documents and products using moiré intensity profiles," in Optical Security and Counterfeit Deterrence Techniques IV, R. L. Van Renesse (Ed.), Proceedings of SPIE Vol. 4677, SPIE, Bellingham, 2002, pp. 89-100.
8. I. Amidror and R. D. Hersch, "Methods and apparatus for authentication of documents by using the intensity profile of moiré patterns," U.S. Patent No. 5,995,638, issued November 30, 1999.
9. I. Amidror, "A generalized Fourier-based method for the analysis of 2D moiré envelope forms in screen superpositions," Journal of Modern Optics, Vol. 41, No. 9, September 1994, pp. 1837-1862.
10. I. Amidror, The Theory of the Moiré Phenomenon. Kluwer Academic Publishers, Dordrecht, 2000.
11. R. D. Hersch and S. Chosson, "Authentication of documents and articles by moiré patterns," U.S. Patent Application No. 10/270546, filed 16th of October 2002.
12. R. D. Hersch and S. Chosson, "Band moiré images," Proceedings of SIGGRAPH 04, ACM Computer Graphics, Annual Conference Series, 2004, pp. 239-247.
13. R. D. Hersch and S. Chosson, "Model-based synthesis of band moiré images for authenticating security documents and valuable products," U.S. Patent Application No. 10/879,218, filed June 30, 2004.
14. A. Schilling, W.R. Tompkin, R. Staub; "Diffractive second-line security features for optically variable devices", in Optical Security and Counterfeit Deterrence Techniques IV, R. L. Van Renesse (Ed.), Proceedings of SPIE Vol. 5310, SPIE, Bellingham, 2004, pp. 289-298.
15. H. Kamal, R. Völkel, J. Alda, "Properties of moiré magnifiers", 1998, Opt.Eng., 37, pp. 3007-3014.
16. W.R. Tompkin, R. Staub; "Optical information carrier"; US patent 6,060,143; November 14, 1996.
17. M. C. Hutley, R. Hunt, R. F. Stevens and P. Savander, "The moiré magnifier", 1994, Pure Appl. Opt., 3, pp. 133-142.
18. K. Drinkwater, P.M.G. Hudson, "Security device for security documents such as bank notes and credit cards"; US Patent 5,712,731; May 11, 1993.
19. Mikami, "New image rotation using moiré lenses", Japan Journal of Applied Physics, 1975, 14, 417-418 and 1065-1066.
20. R.A. Steenblik, M.J. Hurt; "UnisonTM Micro-optic Security Film" in Optical Security and Counterfeit Deterrence Techniques IV, R. L. Van Renesse (Ed.), Proceedings of SPIE Vol. 5310, SPIE, Bellingham, 2004, pp. 321-327.