Polarized Light Sensor for Small Color Tag Detection
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Solution Overview
Problem
Current color-coded information systems face challenges in accurately identifying small color tags with precise polarization characteristics from a distance, as they often require larger surface areas and more ink/pigments, and struggle with filtering out unwanted light spectra.
Innovation Solution
A system that uses polarized light to detect and map the characteristics of a color code from a small target area, employing a polarizing filter to isolate the desired light spectrum and a computer program to cross-reference with a database, integrated into a portable device like a pen, for efficient and accurate color code detection across the RGB spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional color-coded information systems are used, then color tags can be detected, but they require larger surface areas and more ink/pigments
Solution Approach 1:
The patent changes the parameter of light polarization state to encode information. Instead of relying solely on color and size, the system uses polarized light reflections with specific orientation characteristics to represent data, allowing information to be stored in the polarization state rather than requiring larger physical tags with more ink
Solution Approach 2:
The patent adds the dimension of polarization orientation to the traditional color-based identification system. By detecting the orientation of polarized light reflections from the target area, the system extracts additional information dimensions that enable accurate identification without increasing tag surface area
2Measurement precision
If conventional light detection is used, then color information can be captured, but unwanted light spectra cannot be filtered out
Solution Approach 1:
The patent introduces a polarizing filter as an intermediary component between the light source and the detector. This filter selectively transmits light with specific polarization orientations while blocking unwanted light spectra, thereby isolating the desired signal and improving detection accuracy by eliminating spectral interference
3Measurement precision
If polarized light detection is implemented, then small tags can be detected accurately, but device complexity increases
Solution Approach 1:
The patent designs the optical detection device to perform multiple functions: it can detect color information, polarization orientation, and filter unwanted spectra using integrated components. The same optical system handles both the emission of polarized light and the detection of reflected light characteristics, reducing overall system complexity while maintaining high detection accuracy for small tags
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
Enables accurate and efficient color code detection from very small tags, reducing ink/pigment usage, filtering out unwanted light, and supporting identification of smaller objects with a compact, user-friendly device that interacts with smart devices.
Implementation Method 1
The first light emission is a polarized reflection from the target area of a second light emission
Implementation Method 2
Some classes of materials known as birefringent, or optically active, generally modify a wave's polarization
Data Source
AI summary
Polarized light characteristics are detected and mapped to an application, such as product identification. A process of reflecting a directed light emission through a polarizing filter, and sensing the processed light emission having particular characteristics is provided. The characteristics of the sensed light emission is associated with a “color code” that is cross-referenced within a database of color codes.