Method for manufacturing patterned liquid crystal polymer layer, optical component and uses thereof
A technology of liquid crystal polymers and optical components, applied in optical components, optics, polarizing components, etc., can solve the problem of long-term storage of unusable biometric information
Inactive Publication Date: 2012-12-26
ROLIC AG
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, this component cannot be used for long-term storage of biometric information
Method used
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Embodiment 1
[0122] Composition of polymerizable liquid crystal material M1 designed to generate light retardation patterns
[0123]
[0124] The clarification temperature of the composition is T C ≈44°C.
Embodiment 2
[0126] Composition of polymerizable liquid crystal material M2
[0127]
[0128]
[0129] The clarification temperature of the composition is T C ≈55°C.
Embodiment 3
[0131] Composition of polymerizable liquid crystal material M3 containing dichroic dyes
[0132]
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This invention relates to an optical element for the purpose of identification and / or prevention of forgery or copying, including at least one layer with anisotropic optical properties, wherein the anisotropic optical properties are patterned, characterized in that the pattern represents biometric information. In addition, this invention relates to a method for the preparation of an optical element for the purpose of identification and / or prevention of forgery or copying.
Description
technical field [0001] The invention relates to an optical element for identification and / or protection against counterfeiting or copying, comprising at least one layer with anisotropic optical properties, which layer contains biometric information in the form of a pattern. Background technique [0002] Biometric identification systems have been widely developed as a means of providing personal identification. Personal identification is critical in many applications and the high incidence of credit card fraud and identity theft in recent years indicates that this is a major concern in wider society. Personal passwords, PIN identification, keyword personal questions, or even token-based setups all have drawbacks that limit their applicability in the broad networked society. A purported advantage of biometric systems is that they establish an unbreakable one-to-one correspondence between individuals and data segments. [0003] Primarily, the application of biometrics is the ...
Claims
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IPC IPC(8): B42D15/10G02B5/30G06K9/00
CPCG02B5/3016B42D25/00B42D2033/26B42D2035/10B42D25/318B42D15/10B42D2035/34B42D25/313B42D2035/04B42D25/378B42D25/364B42D25/30B42D25/40G02B5/3083B42D25/405
Inventor F·X·德尔巴尔H·塞伯勒P·施图德
Owner ROLIC AG