Invention Application
- Patent Title: MULTI-LAYER FILM DEPICTING A COLOUR TWO-DIMENSIONAL IMAGE WHICH IS ONLY VISIBLE THROUGH A POLARIZING FILTER AND PROCESS FOR MAKING THE FILM
- Patent Title (中): 多层膜通过偏光过滤器和仅用于制作薄膜的过程可见的彩色二维图像
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Application No.: US13139381Application Date: 2009-12-23
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Publication No.: US20110262717A1Publication Date: 2011-10-27
- Inventor: Martin Eduardo Broen , Emanuele Teobaldo , Enrico Girotti , Giacomo Melani
- Applicant: Martin Eduardo Broen , Emanuele Teobaldo , Enrico Girotti , Giacomo Melani
- Applicant Address: IT 32021 Agordo
- Assignee: LUXOTTICA S.R.L.
- Current Assignee: LUXOTTICA S.R.L.
- Current Assignee Address: IT 32021 Agordo
- Priority: ITBO2008A000771 20081223
- International Application: PCT/IB09/55938 WO 20091223
- Main IPC: B32B3/10
- IPC: B32B3/10 ; B29C65/02 ; C09J5/02
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).
Information query
