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/2010/073229
Kind Code:
A3
Abstract:
A 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 said image on its face opposite the polarizing layer (3) when said face is seen through the polarizing filter; the optically active layer comprises a plurality of areas (4) arranged side by side in said face to form corresponding portions of the image, each area (4) being mechanically stressed to a predetermined intensity so that the corresponding portion of the image has a predetermined colour when seen through the polarizing filter. Also described is an apparatus (6) for making the film (1).
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JPH07156579 | EASY LETTER PAPER |
JPS58180068 | 【考案の名称】画面設計用紙 |
Inventors:
BROEN MARTIN EDUARDO (IT)
TEOBALDO EMANUELE (IT)
GIROTTI ENRICO (IT)
MELANI GIACOMO (IT)
TEOBALDO EMANUELE (IT)
GIROTTI ENRICO (IT)
MELANI GIACOMO (IT)
Application Number:
PCT/IB2009/055938
Publication Date:
September 30, 2010
Filing Date:
December 23, 2009
Export Citation:
Assignee:
LUXOTTICA SRL (IT)
BROEN MARTIN EDUARDO (IT)
TEOBALDO EMANUELE (IT)
GIROTTI ENRICO (IT)
MELANI GIACOMO (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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