| 摘要 |
A holographic image identification system includes an image reconstruction device having a laser beam source movable along an arc path to selectively project a laser beam onto a hologram located on the center of the arc path at a preselected incidental angle so as to form an image on a screen to be received by a charge coupling device which converts the image into an electrical signal and transmits the electrical signal to a computer to compare with a reference image stored in the storage memory of the computer. The incidental angle of the laser beam is also fed to the computer to compare with a pre-stored value associated with the reference image for double-check of the correctness of the holographic image.
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