Counterfeit Detector UV LED Reflective Plate
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Solution Overview
Problem
Conventional counterfeit detectors using UV LEDs suffer from unsatisfactory light condensing, leading to ineffective identification of fluorescent security marks due to light loss and short LED lifetime, with potential environmental pollution from mercury.
Innovation Solution
A counterfeit detector design featuring individual reflective parts arranged in series to minimize light dispersion and enhance UV ray condensation, combined with a wavelength selection switch for targeted UV emission, allowing for high-brightness and efficient identification of security documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV LEDs are used to replace UV lamps, then environmental pollution is reduced and lifetime is extended, but light condensing becomes unsatisfactory leading to light loss
Solution Approach 1:
The reflective plate is divided into multiple individual reflective parts (first, second, third reflective parts) that are arranged in series. Each reflective part independently reflects UV rays from UV LEDs, preventing light dispersion and minimizing light loss while extending LED lifetime through efficient light utilization
Solution Approach 2:
A reflective plate with individual reflective parts is introduced as an intermediary component between UV LEDs and the security document. This intermediary structure independently reflects and directs UV rays, ensuring effective light transmission without direct contact between LEDs and the document, thereby reducing light loss
2Loss of energy
If individual reflective parts are arranged in series, then light dispersion is minimized, but device complexity increases
Solution Approach 1:
Multiple individual reflective parts are merged into a single integrated reflective plate structure. This combination approach maintains the light-dispersion-minimizing benefits of individual reflective parts while reducing device complexity by consolidating them into one unified component rather than separate elements
3Productivity
If UV lamps are used, then identification effectiveness is reduced, but if UV LEDs are used, then identification effectiveness improves
Solution Approach 1:
The light source parameter is changed from traditional UV lamps to UV LEDs, which have longer lifetime and better light condensing properties. This parameter change simultaneously improves both identification effectiveness (productivity) and device reliability, resolving the contradiction between these two features
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 enables clear and reliable identification of fluorescent security marks with reduced power consumption and extended LED lifetime, effectively preventing counterfeiting and related crimes.
Implementation Method 1
UV LEDs are respectively disposed in the individual reflective parts. The UV LEDs irradiate a security document
Implementation Method 2
The reflective plate is exposed to outside through the opening of the casing to independently reflect UV rays
Implementation Method 3
a fluorescent security mark that is formed in a special shape using UV (ultraviolet) fluorescent material
Data Source
Figure 1~2
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AI summary
The present invention provides a counterfeit detector(1) which identifies whether a security document or the like is authentic by irradiating UV rays from UV LEDs (30) onto fluorescent security marks(3) formed on the security document. UV rays emitted from the UV LEDs(30) are independently condensed and reflected, thus enabling a user to more effectively identify the fluorescent security marks(3) that are formed in special shapes using UV fluorescent material.