An system and method for reading upconversion responses from nanoparticle inks, providing enhanced security measures for product authentication, document verification, and anti-counterfeiting applications.
Patent Overview
The Challenge
The Challenge
The problem this patent addresses comes from limits in how earlier systems handled the underlying signal. Several specific gaps motivated the new approach.
- The Problem — Counterfeiting of goods poses a major concern for corporate, federal, and state organizations. Counterfeit products compromise security, identity, and value across multiple sectors, exerting strong negative impacts on societal, financial, and social wellbeing. Document...
- Integrated Circuit Authentication — Counterfeit integrated circuits compromise critical infrastructure from healthcare devices to military equipment. A device that can read and decode printed features through opaque polymer or epoxy coatings is crucial for preventing fraud.
- Upconversion Phosphor Technology — Upconversion phosphors emit light at wavelengths shorter than the excitation light. The concentration and combination of lanthanide dopants influence both the wavelength and intensity of upconversion emission.
Innovation
How The System Works
The patent introduces a multi-step mechanism that turns the input signal into a usable ranking output. Each step builds on the previous one.
- Innovation in Security Technology — The reader apparatus for upconverting nanoparticle ink printed images represents a significant advancement in security and authentication technology. By leveraging the unique properties of NIR-to-NIR upconversion, this system provides robust...
- Critical Vulnerabilities — Savvy counterfeiters can become privy to the location and properties of genuine product identifiers and forge those as well, necessitating more sophisticated authentication technologies.
- Document Security — A need exists for invisible taggants that can be read by devices to verify document authenticity and information integrity. Artwork would benefit from concealed taggants imperceptible to the naked eye but readable by specialized devices.
- Supply Chain Protection — Screening and validating cargo contents involves scanning barcodes, two-dimensional codes, and RFID tags. A scanning device capable of verifying critical product information encoded on covert taggants is essential for authentication.
Technical Foundation
Technical Foundation
The implementation rests on a specific set of components and data structures. These are the parts the patent claims and the engineering that ties them together.
- Camera Module — Raspberry Pi NOIR camera or Microsoft VX-6000 webcam with infrared filter removed. Camera mount secures device to housing, positioned to receive emission wavelength through short pass filter.
- Ink Formulation — Upconversion nanoparticles (UCNPs) dispersed in a polymer base create specialized inks invisible to the eye under ambient conditions or ultraviolet excitation.
- NIR Activation — When printed on paper, the upconversion ink becomes visible upon excitation with near-infrared (NIR) light at approximately 980 nanometers wavelength.
The Process
The Process
In production, the system executes a sequence of stages from query reception to result delivery. Each stage applies one transformation to the data.
- Presentation Layer — Consists of layout XML files dictating application appearance and defining interface objects such as buttons and images. Controls visual presentation of various fragments and user interaction elements throughout the application.
- Optimal Performance — Lanthanide ion-doped β-NaYF4 is recognized for exceptionally efficient visible upconversion upon NIR light excitation.
- Unique Emission Characteristics — β-NaYF4 UCNPs doped with Yb³⁺ and Tm³⁺ are known for NIR-to-blue upconversion emission between wavelengths of 440 and 500 nm. However, these blue UCNP inks also emit NIR light at 800 nm wavelength, which is invisible to the naked eye but much more intense...
Quality Control
Quality Control
The system includes checks that defend against edge cases, manipulation, and degraded signal. Without these, the core mechanism would be exploitable.
- Short Pass Filter — 800 nm center wavelength optical filter ensures reflected wavelength doesn't blind the camera from detecting emission wavelength. Hard coated OD4 50 nm bandpass filter provides optimal performance.
- Optical Filter System — 800 nm CWL, 25 millimeter diameter, Hard Coated OD4 50 nm Bandpass Filter from Edmund Optics. Filter housing and front ring ensure proper alignment with camera optical path.
- Verification & Display — Decoded signal compared against databases for product verification and authenticity. Results displayed on smartphone with options to save, share, or perform additional analysis.
- Artwork Verification — Art pieces benefit from concealed taggants that establish provenance and authenticity. Hidden markers deter forgery while preserving aesthetic integrity of original works without visible security features.
- Database Verification — Decoded signals compared against authentication databases. Instant verification of product authenticity and information integrity across supply chains and distribution networks.
Real-World Application
The patent shapes how the search engine behaves in production. These are the visible outcomes for users and content publishers.
- Reader Application Architecture — Software developed using Eclipse IDE with Android Software Development Kit (SDK) for application development written in Java. Similar software can be developed for iOS platform using appropriate...
- 800 Coating Advantages — These coatings can be completely opaque as long as the coating transmits both 800 nm and 980 nm wavelengths. This property enables capture of NIR images of UCNP inks coated with NIR transparent...
- 980 NIR Laser Source — Class IV laser producing 980 nm near-infrared excitation wavelength directed at readable indicia. Variable power supply prevents damage to substrate or ink while maintaining optimal detection...
What This Means for SEO
What This Means for SEO
A reading-apparatus patent looks like pure hardware, but its content-identity mechanic, recognizing tagged physical objects, parallels the entity-recognition primitives the web uses.
- Entities Are Tagged In Both Worlds — In the physical world, a nanoparticle tag identifies an object. On the web, schema markup identifies an entity. Tagging your content with entity markup is the equivalent step.
- Recognition Confidence Compounds — Both readers and search engines use confidence thresholds. The more consistent your tagging, the higher the confidence the system has, and the more often it relies on you as a source.
- Off-Topic Patents Still Yield Primitives — Even a patent outside the search domain can reveal a primitive (tag, read, score) that search uses in its own form. Reading widely beyond pure-search patents broadens the pattern library.