Reflective Mirror Segment Layout for High-Yield Optical Anti-Counterfeiting
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Solution Overview
Problem
Existing optical anti-counterfeiting elements with micro-lens and micro-graphic-text arrays face manufacturing difficulties due to high periodicity requirements, complex process flows, alignment issues, and low yield, leading to suboptimal anti-counterfeiting effects.
Innovation Solution
An optical anti-counterfeiting element featuring reflective mirror segments arranged on a substrate with gaps, providing pixels for macroscopic dynamic and stereoscopic images through controlled reflection and gap effects, utilizing structural layers and micro-relief structures to enhance image formation and color features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If micro-lens array and micro-graphic-text array are respectively prepared and copied on both sides of substrate, then anti-counterfeiting element can be manufactured, but manufacturing process becomes complex and yield decreases
Solution Approach 1:
The patent combines the micro-lens array and micro-graphic-text array into a single integrated structure on one side of the substrate. The microlens array serves as both the optical element and the carrier for the graphic-text information, eliminating the need for separate preparation and alignment of two independent arrays. This integration simplifies the manufacturing process and improves yield by reducing the number of sequential processing steps and alignment operations required.
2Manufacturing precision
If micro-lens array and micro-graphic-text array are arranged periodically with submicron precision, then optical anti-counterfeiting effect is achieved, but manufacturing difficulty increases
Solution Approach 1:
The patent segments the graphic-text information into discrete pixel elements that are directly formed within the microlens array structure. Each microlens corresponds to a pixel or group of pixels, and the graphic-text pattern is created by selectively removing or modifying specific microlenses rather than requiring precise alignment of two separate periodic arrays. This approach reduces the manufacturing precision requirement from submicron alignment to a more achievable level of microlens fabrication and selective modification.
3Ease of manufacture
If sequential processing is performed on two surfaces of substrate, then micro-lens array and micro-graphic-text array can be formed, but process flow becomes complex
Solution Approach 1:
The patent merges the formation of both the microlens array and the graphic-text information into a single processing step on one side of the substrate. The graphic-text pattern is directly embedded in the microlens array structure through selective etching, deposition, or other modification techniques applied to the microlens layer itself. This eliminates the need for sequential processing of two separate surfaces and structures, significantly simplifying the overall process flow and reducing the number of manufacturing steps required.
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 improves manufacturing yield and image clarity, enabling clear and recognizable anti-counterfeiting information in high-security products by controlling light reflection and direction, reducing ghost images, and enhancing structural color and diffraction effects.
Implementation Method 1
each of the plurality of reflective mirror segments is arranged on one side surface of the substrate according to a preset rule, the plurality of reflective mirror segments are arranged at intervals and two adjacent reflective mirror segments form a gap, and the plurality of reflective mirror segments and/or the gap provide pixels of macroscopic images, thereby forming macroscopic dynamic images and stereoscopic images
Implementation Method 2
at least a part of the plurality of reflective mirror segments is provided with a structural layer, the structural layer homomorphically covers a side surface, away from the substrate, of each of the at least a part of the plurality of reflective mirror segments, and provides light of a preset color in a direction of reflected light
Implementation Method 3
The gap penetrates at least in a first dimension in a plane, and in a second dimension perpendicular to the first dimension, a width of the gap is greater than 1 micron and less than 100 microns
Data Source
AI summary
The disclosure provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element comprises a substrate and a plurality of reflective mirror segments; wherein each of the plurality of reflective mirror segments is arranged on one side surface of the substrate according to a preset rule, the plurality of reflective mirror segments are arranged at intervals and two adjacent reflective mirror segments form a gap, and the plurality of reflective mirror segments and/or the gap provide pixels of macroscopic images, thereby forming macroscopic dynamic images and stereoscopic images. The disclosure solves the problem in the related art that an optical anti-counterfeiting element has a low yield.