Identity card with grid images
AssigneeHoechst Aktiengesellschaft
InventorsRoland Moraw, Gotz von dem Bussche
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Abstract
Disclosed is an identity card having grid images thereon comprised of a linear grid structure. In various embodiments, the grid depths of the individual grid images differ and can produce several different image colors. The card in a further embodiment can comprise a number of layers which are laminated together around a card core which has a window located therein. A number of variations of grid images can be included and/or superposed in the window in order to provide a security identification system which is extremely difficult to forge. Also disclosed are numerous combinations of grid structures some of which include grid images which may be absorption images and/or phase images.
Claims16
An identity card comprising:
- at least one layer, said layer including a window therein:
- a grid carrier located in said window, said grid image carrier comprising means for defining at least one grid image, said grid image having a linear grid structure of different depths, said grid image comprising means for producing during readout by light transmission during reconstruction at least one colored information;
- and
- means for carrying information identifying a cardholder, said grid images comprising at least one linear grid structure as protection against forgery.
Dependencies are inferred from the claim text.