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
Original Manuscript: August 16, 1994
Revised Manuscript: January 4, 1995
Published: August 1, 1995
Shou Liu, Xiangsu Zhang, and Hongkai Lai, "Artistic effect and application of moiré patterns in security holograms," Appl. Opt. 34, 4700-4702 (1995)