Optical Coating Spectral Keying for Low-Cost Product Authentication
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Solution Overview
Problem
There is a need for a cost-effective solution to prevent the use of unauthorized consumable products with primary products by differentiating the spectral response of optical coatings, as existing technologies like bar code and RFID systems are expensive and not widely implemented.
Innovation Solution
A system using LED transmitters and receivers to differentiate the spectral response of optical coatings by transmitting light signals and interpreting reflected light to determine if the coating is authorized, allowing for the creation of complex coded information to authenticate product pairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bar code or RFID systems are used to authenticate products, then product authentication capability is improved, but system cost increases
Solution Approach 1:
The patent replaces expensive RFID tags and bar code systems with inexpensive optical coatings that can be applied directly to consumable products. The optical coating acts as a disposable authentication element that is cheap to manufacture and apply, eliminating the need for costly electronic authentication components while maintaining security against counterfeiting.
Solution Approach 2:
The patent substitutes electronic authentication systems (RFID, bar codes) with an optical-based authentication mechanism. Instead of using electronic fields or mechanical scanning, the system uses light interaction with optical coatings to authenticate products, simplifying the overall system architecture and reducing costs.
2Device complexity
If simple authentication methods are used, then system cost is reduced, but authentication security deteriorates
Solution Approach 1:
The patent uses spectral response parameters of optical coatings to create secure authentication codes. By measuring the specific wavelengths of light reflected or absorbed by the optical coating, the system creates a unique spectral fingerprint that is difficult to replicate. This transforms a simple optical interaction into a secure authentication mechanism through parameter differentiation.
Solution Approach 2:
The patent employs composite optical coatings with specific material compositions that produce unique spectral responses. These composite materials combine different pigments, dyes, or optical layers that interact with light in characteristic ways, creating authentication codes that are inherent to the material composition and difficult to counterfeit without precise material replication.
3Reliability
If multiple transmitters and receivers are used to create complex codes, then authentication security is improved, but device complexity increases
Solution Approach 1:
The patent uses sequential activation of multiple LED transmitters at different wavelengths to probe the optical coating. By activating LEDs in a periodic sequence and measuring the spectral response at each wavelength, the system creates a complex authentication code without requiring all transmitters and receivers to operate simultaneously, thereby reducing device complexity while maintaining security.
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 provides a low-cost method to authenticate products by using reflectance properties of optical coatings, allowing for the creation of complex codes that are difficult to replicate, thereby protecting brand names and revenue streams.
Implementation Method 1
a transmitter operatively located adjacent the optical coating for transmitting a first light signal against an optical coating; a receiver operatively located adjacent the optical coating for receiving reflected light off the optical coating
Data Source
AI summary
Systems and methods for differentiating the spectral response of various optical coatings between a transmitter and receiver. The system is effective in determining if an optical coating produces an authorized spectral response for determining if a product having that optical coating is authorized to be used with another product.