Method of legitimate product identification and seals and identification apparatus
AssigneesShoei Printing Co., Ltd., Amc
InventorsHayao Kakae, Isao Isaka
Life of this patent
Estimating the term…
Abstract
A Fourier transform hologram image is created on a sheet on the seal. The image is made, by making a die from the Fourier transform hologram image master plate and by molding resin on the die. The image formed on the sheet is reconstructed by an identification apparatus. The identification apparatus contains the laser emitting device and the screen for receiving the reflecting laser beam. The laser beam is illuminated vertically against the sheet from the laser emitting device. The laser beam reflected from the sheet surface is received by the screen, and the image of the sheet is reconstructed on the screen. At this time, it is possible to check whether the laser beam is reaching the sheet from an opening in the casing.
Claims3
An identification apparatus including:
- a casing including a laser beam reflection area for receiving a seal having a holographic image formed thereon and an opening near said laser beam reflection area;
- laser emitting means, attached to said casing, for illuminating vertically a laser beam on a hologram surface of said seal having the holographic image formed thereon;
- screen means, attached to said casing, for receiving the laser beam reflected from the hologram surface and displaying the holographic image thereon;
- and
- lens means in said casing for adjusting divergency of said laser beam.
Dependencies are inferred from the claim text.