MULTI-LAYER FILM DEPICTING A COLOUR TWO-DIMENSIONAL IMAGE WHICH IS ONLY VISIBLE THROUGH A POLARIZING FILTER AND PROCESS FOR MAKING THE FILM

Title:

MULTI-LAYER FILM DEPICTING A COLOUR TWO-DIMENSIONAL IMAGE WHICH IS ONLY VISIBLE THROUGH A POLARIZING FILTER AND PROCESS FOR MAKING THE FILM

Document Type and Number:

WIPO Patent Application WO/2010/073228

Kind Code:

A3

Abstract:

A multi-layer film (1), depicting a colour two-dimensional image which is only visible through a polarizing filter comprises an optically active layer (2) placed over a polarizing layer (3) and configured to form the image on its face opposite the polarizing layer (3) when said face is seen through the polarizing filter, the optically active layer (2) comprising a plurality of sheets (4) of optically active material placed over each other, at least one of which is shaped to form at least one portion of the outline of the image.

Inventors:

BROEN MARTIN EDUARDO (IT)
TEOBALDO EMANUELE (IT)
GIROTTI ENRICO (IT)
MELANI GIACOMO (IT)

Application Number:

PCT/IB2009/055937

Publication Date:

September 30, 2010

Filing Date:

December 23, 2009

Export Citation:

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Assignee:

LUXOTTICA SRL (IT)
BROEN MARTIN EDUARDO (IT)
TEOBALDO EMANUELE (IT)
GIROTTI ENRICO (IT)
MELANI GIACOMO (IT)

International Classes:

B42D15/00

Domestic Patent References:

WO2007051529A1

2007-05-10

Foreign References:

US20070216518A1	2007-09-20
US20050121287A1	2005-06-09

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