3D Security Label With Microlens Array For Dynamic Pattern Display
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Solution Overview
Problem
Existing methods for preventing forgery of products, such as bank bills and identification cards, are inadequate due to advancements in printing technology, as they either rely on complex and costly manufacturing processes or fail to provide dynamic visual effects that can be easily imitated.
Innovation Solution
A 3-D label featuring a lens layer with microlenses arranged at specific intervals and a secret unit that displays hidden patterns to the naked eye when the focal length is matched, allowing for moving patterns, shape changes, and optical illusions, thereby enhancing forgery prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional printing methods are used for forgery prevention, then manufacturing cost and complexity are reduced, but the ability to prevent forgery is insufficient due to advanced copying technology
Solution Approach 1:
The patent applies dynamics by creating moving patterns that change appearance based on viewing angle. The pattern layer contains pattern cells that move relative to microlenses when the label is tilted, creating dynamic visual effects that are difficult to forge. This resolves the contradiction by providing strong forgery prevention through dynamic behavior rather than static complex patterns.
Solution Approach 2:
The patent introduces a new dimension by adding the viewing angle parameter. Patterns are not static in the 2D plane but move and change based on the 3D viewing angle. The pattern cells are arranged and sized to create specific movement effects when viewed from different angles, providing forgery prevention through spatial-dtemporal dynamics rather than just complex 2D patterns.
2Reliability
If complex special printing technologies are used, then forgery prevention capability is improved, but manufacturing cost and process complexity increase
Solution Approach 1:
The patent segments the label into distinct functional layers: a lens layer with microlenses, a pattern layer with pattern cells, and optionally a base layer. Each layer has a specific function - microlenses provide optical magnification and angle-dependent visibility, pattern cells provide the visual information that moves when tilted. This segmentation allows each component to be manufactured separately using relatively simple processes, then assembled, reducing overall manufacturing complexity while maintaining strong forgery prevention.
Solution Approach 2:
The microlenses act as an intermediary between the pattern layer and the viewer. They mediate the visual information by magnifying and angle-dependently displaying the pattern cells. This intermediary component enables the simple pattern cells to produce complex dynamic visual effects, providing strong forgery prevention without requiring complex printing processes for the patterns themselves.
3Ease of manufacture
If static patterns are used for authentication, then manufacturing is simple, but visual effects are limited and容易被 imitated
Solution Approach 1:
The patent transforms static patterns into dynamic moving patterns that change appearance based on viewing angle. Pattern cells of different sizes and positions create different movement speeds and trajectories when the label is tilted, producing diverse visual effects including apparent movement, disappearance, and reappearance of patterns. This provides versatile visual effects while maintaining manufacturing simplicity through the layered structure.
Solution Approach 2:
The patent utilizes parameter changes by varying the size, position, and arrangement of pattern cells relative to microlenses. By changing these parameters, different visual effects are achieved - some patterns move faster, some slower, some appear to disappear completely at certain angles. This parameter variation provides diverse visual effects without requiring fundamentally different manufacturing processes.
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
The solution provides a more secure and efficient means to verify the authenticity of products by creating dynamic visual effects that are difficult to imitate, improving productivity and workability while being easily fabricable and applicable to various products.
Implementation Method 1
a lens layer configured to have a plurality of microlenses arranged therein at specific intervals
Implementation Method 2
when a focal length is not the same when some of the patterns are seen at the front of the lens layer
Implementation Method 3
a visual effect that a moving image appears due to an optical illusion in which patterns move
Data Source
AI summary
A 3-D label is disclosed including moving patterns using fine patterns and microlenses, including a lens layer in which a pattern display unit having microlenses that are convex in a semicircumferential form arranged at specific intervals and to represent patterns formed in a pattern layer regardless of a visual field focal length and a secret unit placed on one side of the pattern display unit and displaying intended patterns formed in the pattern layer when a predetermined visual field focal length is reached are integrated and formed; and the pattern layer disposed under the lens layer and having patterns formed thereon so that the distance between the central point of each of the microlenses and the central point of an adjacent microlens is matched with the distance between the central point of each of pattern cells and the central point of an adjacent pattern cell in the state.