Identification Document Dual Laser Visual Identifiers
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Solution Overview
Problem
Identification documents face challenges in balancing mass production with security against forgery, as existing methods can be complex and require technical devices for authenticity verification, and are vulnerable to manipulation through laser engraving.
Innovation Solution
The implementation of an identification document with two visual identifiers, one area darkening and the other area brightening under laser irradiation, creating a copy-like impression that is difficult to manipulate, allowing authenticity verification without specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laser engraving is used to create visual identifiers, then manufacturing simplicity and cost-effectiveness are improved, but the document becomes vulnerable to manipulation and forgery
Solution Approach 1:
The patent applies inverse laser irradiation patterns to create complementary visual identifiers. The first visual identifier uses standard laser engraving (darkening), while the second visual identifier uses inverted laser irradiation (brightening). This inversion makes manipulation difficult because any attempt to alter one identifier would create inconsistent changes in the other, thereby maintaining security while keeping manufacturing simple
Solution Approach 2:
Different areas of the identification document are given different laser response properties. The first area is configured for darkening upon laser irradiation, while the second area is configured for brightening. This local differentiation creates a system where manipulation attempts become evident through inconsistent local responses, resolving the contradiction between ease of manufacture and security
2Reliability
If complex security measures like holograms and micro-letters are added, then security against forgery is improved, but device complexity and verification difficulty increase
Solution Approach 1:
The patent creates a copy of the visual identifier in a second area with complementary laser response properties. This copy allows for simple visual verification by comparing the two identifiers, eliminating the need for complex technical devices while maintaining security against forgery through the complementary response characteristic
3Ease of operation
If single visual identifier is used, then ease of verification is improved, but vulnerability to manipulation increases
Solution Approach 1:
The patent merges two visual identifiers with complementary laser response properties into a single identification document. This combination maintains verification ease through simple visual comparison while enhancing security against manipulation, as any alteration to one identifier creates an evident inconsistency with its complementary counterpart
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances security by making it difficult for counterfeiters to manipulate the document and allows easy authenticity checks with a simple visual comparison, reducing the need for technical devices.
Implementation Method 1
The first area is configured in such a way that when it is laser irradiated, local darkening of the optical impression of the identification document resulting from material conversions is generated
Implementation Method 2
The second area is configured in such a way that when it is irradiated with a laser, local brightening of the optical impression of the identification document resulting from material conversions is produced
Data Source
Figure 1~2
AI summary
The invention relates to an identification document (10) comprising a personalized first visual identifier (14) that is arranged in a first region (12) of the identification document (10), wherein the first region (12) is configured such that upon laser irradiation thereof, localized instances of darkening of the visual appearance of the identification document (10) are created, resulting from material transformations. The identification document (10) furthermore has a second visual identifier (26) that creates the visual appearance of a copy of the first visual identifier (14) and that is arranged in a second region (22) of the identification document (10), wherein the second region (22) is configured such that upon laser irradiation thereof, localized instances of darkening of the visual appearance of the identification document (10) are created, resulting from material transformations.