Invention Grant
- Patent Title: Optical element
- Patent Title (中): 光学元件
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Application No.: US11931937Application Date: 2007-10-31
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Publication No.: US07679701B2Publication Date: 2010-03-16
- Inventor: Martin Schadt , Hubert Seiberle
- Applicant: Martin Schadt , Hubert Seiberle
- Applicant Address: CH Zug
- Assignee: Rolic Ltd c/o Rolic Technologies Ltd
- Current Assignee: Rolic Ltd c/o Rolic Technologies Ltd
- Current Assignee Address: CH Zug
- Agency: Sughrue Mion, PLLC
- Priority: CH1082/97 19970509
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
A component has a substrate (1) made of a transparent material, for example glass. On this layer (1), there is a linear polarizer (2) on which there is a layer (3) of a photo-oriented polymer network (PPN)(-LPP) which is oriented in locally varying fashion via its surface which covers the substrate. The layer (3) is adjoined by an anisotropic layer (4) of cross-linked liquid-crystal monomers. This layer (4) then has a molecular arrangement whose orientation is defined by the underlying orientation layer (3). The layer (4) will have been photocross-linked by exposure to a suitable wavelength of light, with the result that the molecular orientation defined by the PPN layer (3) is fixed. The element, denoted as a whole by 7, can then be used as an optical component which is protected against forgery, it being possible for the orientation pattern of the liquid-crystal layer or the optical information stored therein to be made visible by means of an external polarizer (5), for example.
Public/Granted literature
- US20080098488A1 OPTICAL ELEMENT Public/Granted day:2008-04-24
Information query
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