Security document with transparent windows

Details Security document with transparent windows Security document with transparent windows

G - Physics

07

D

G07D 7/12 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2580288

The invention relates to a security document (1) with a transparent window (12), inside of which a first optical element (15) is placed, and with a second transparent window (13), inside of which a second optical element is placed. The first transparent window (12) and the second transparent window (13) are, while being interspaced, placed on a support (11) of the security document (1) whereby enabling the first and second optical elements (15, 16) to be superimposed. The first optical element (15) has a first transmissive microlens field and the second optical element (16) has a second transmissive microlens field, a first optical effect being produced when the second microlens field is overlapped by the first microlens field.

L'invention concerne un document de sécurité (1) comportant une première fenêtre transparente (12), dans laquelle est disposé un premier élément optique (15) et une seconde fenêtre transparente (13), dans laquelle est disposé un second élément optique. La première fenêtre transparente (12) et la seconde fenêtre transparente (13) sont disposées à distance l'une de l'autre sur le support (11) du document de sécurité (1), de sorte que le premier et le second élément optique (15, 16) puissent être placés en recouvrement mutuel. Le premier élément optique (15) présente un premier champ transmissif de microlentilles et le second élément optique (16) présente un second champ transmissif de microlentilles. En cas de recouvrement du second élément optique par le premier champ de microlentilles, il se produit un premier effet optique.

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