High security spectral code strip

Details High security spectral code strip High security spectral code strip

G - Physics

02

B

G02B 5/32 (2006.01) B42D 15/10 (2006.01) G03H 1/02 (2006.01) G06K 7/12 (2006.01) G06K 19/16 (2006.01)

Patent

CA 2112179

HIGH SECURITY SPECTRAL CODE STRIP ABSTRACT OF THE DISCLOSURE An encoded hologram strip including a plurality of hologram digits linearly arranged along a longitudinal direction, each hologram digit including at least 0 paral- lel fringe reflection holograms wherein each parallel fringe hologram is constructed to diffract playback light having a predetermined wavelength and incidence angle at a diffraction angle that is substantially equal to the playback incidence angle.

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