Abstract

Using a special holographic technique, moiré patterns can be recorded with a horizontal parallax, thus producing a fascinating artistic effect. With special characteristics, holographic moiré patterns can be used as secret codes in security holograms for different security purposes. A remarkable anticounterfeit effect has been achieved by using this kind of security hologram to protect famous high-quality products. The technique used for recording moiré patterns is described, and sample holograms are shown.

© 1995 Optical Society of America

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References

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  1. G. Mu, Y. Zhan, S. Sheng, Optics (People’s Education Publishing, Beijing, 1978), Chap. 10, p. 359, in Chinese.
  2. M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.
  3. A. W. Longman, Optical Information Processing (translated into Chinese by Z. Yu, G. Jing, Publishing House of Qinghua University, Beijing, 1987), Chap. 4, p. 27.

Ha, L.

M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.

Longman, A. W.

A. W. Longman, Optical Information Processing (translated into Chinese by Z. Yu, G. Jing, Publishing House of Qinghua University, Beijing, 1987), Chap. 4, p. 27.

Mu, G.

G. Mu, Y. Zhan, S. Sheng, Optics (People’s Education Publishing, Beijing, 1978), Chap. 10, p. 359, in Chinese.

Sheng, S.

G. Mu, Y. Zhan, S. Sheng, Optics (People’s Education Publishing, Beijing, 1978), Chap. 10, p. 359, in Chinese.

Wang, C.

M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.

Xie, J.

M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.

Yu, M.

M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.

Zhan, Y.

G. Mu, Y. Zhan, S. Sheng, Optics (People’s Education Publishing, Beijing, 1978), Chap. 10, p. 359, in Chinese.

Other (3)

G. Mu, Y. Zhan, S. Sheng, Optics (People’s Education Publishing, Beijing, 1978), Chap. 10, p. 359, in Chinese.

M. Yu, C. Wang, L. Ha, J. Xie, Optical Holography and Information Processing (National Defence Industry Publishing, Beijing, 1984), Chap. 12, p. 193, in Chinese.

A. W. Longman, Optical Information Processing (translated into Chinese by Z. Yu, G. Jing, Publishing House of Qinghua University, Beijing, 1987), Chap. 4, p. 27.

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Figures (4)

Fig. 1
Fig. 1

Relative displacement between the two original patterns introduced by changing the viewing angles.

Fig. 2
Fig. 2

Optical arrangement for the recording of moiré patterns.

Fig. 3
Fig. 3

Photograph of a holographic image with the artistic effect of a moiré pattern.

Fig. 4
Fig. 4

Photograph of a security hologram with a moiré pattern as the secret code for anticounterfeiting.

Equations (1)

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D = d 1 d 2 ( d 1 2 - d 2 2 - 2 d 1 d 2 cos θ ) 1 / 2 ,

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