Ring-Shaped Analyte Illumination for Ambient-Light-Resistant Spectral Testing
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Solution Overview
Problem
Existing non-invasive glucose testing methods are susceptible to environmental light interference, affecting accuracy and making miniaturization challenging.
Innovation Solution
A system with a ring-shaped light source providing both infrared and ultraviolet light ranges, combined with bandpass filters, to illuminate and capture spectral data from the skin, enabling accurate analyte concentration measurement without invasive methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ambient light is used for illumination in non-invasive glucose testing, then the testing can be performed without invasive methods, but environmental light interference affects measurement accuracy
Solution Approach 1:
The illumination system is segmented into multiple independent LED modules with different wavelength ranges (blue, green, red, infrared) that can be selectively activated. This allows the system to use specific wavelength ranges for illumination while using other wavelength ranges for detection, thereby eliminating environmental light interference and maintaining non-invasive operation.
Solution Approach 2:
A wavelength-selective filter is introduced as an intermediary component between the illumination source and the detector. The filter transmits only specific wavelength ranges corresponding to the illumination source's wavelength range, blocking environmental light at other wavelengths. This mediator enables accurate measurement while maintaining non-invasive testing capability.
2Device complexity
If a single light source covers both analyte distribution and spectral data wavelength ranges, then device complexity is reduced, but measurement precision may be compromised
Solution Approach 1:
The single light source is segmented into multiple LED modules, each emitting light within a specific wavelength range. This segmentation allows the system to illuminate the skin with light of a certain wavelength range while detecting at a different wavelength range, ensuring that the detection process is not interfered with by the illumination process and maintaining measurement precision.
Solution Approach 2:
The patent employs a multi-functional illumination system where a single light source unit contains multiple LED modules that can be selectively activated for different illumination purposes. The system can switch between different wavelength ranges for illumination based on the detection requirements, achieving both device simplicity and measurement precision through multi-functionality.
3Measurement precision
If the shell fits the tested part to form an imaging area, then measurement precision is improved by isolating the testing area, but device complexity increases
Solution Approach 1:
The patent employs a flexible shell or thin film structure that can conform to the curvature of the tested body part (such as the wrist or finger). This flexible structure creates a well-defined imaging area by wrapping around the body part, providing precise spatial confinement for the light source and detector while maintaining simplicity and ease of application without complex rigid mechanisms.
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 system provides stable, uniform illumination and accurate analyte concentration measurement by excluding non-analyte influences, facilitating miniaturization and real-time testing with low costs.
Implementation Method 1
The light source is capable of providing light within a preset wavelength range
Implementation Method 2
the first bandpass filter allows the light within the preset wavelength range to pass through and light outside the preset wavelength range to be cut off
Implementation Method 3
obtain spectral data that indicate uneven distribution in the imaging area of a reflection signal or an excitation signal generated by the analyte
Data Source
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AI summary
The present invention provides a system for illuminating an analyte and a system for testing an analyte which relate to the field of optical analysis. The system for illuminating the analyte includes a shell and a light source. The light source is capable of providing light within a preset wavelength range; and the shell is capable of fitting a tested part of a tested object and forming an imaging area at a fitting position, and the light source illuminates the imaging area. According to this application, a wavelength range of light provided by the light source covers both a wavelength range within which analyte distribution data can be obtained and a wavelength range within which analyte spectral data can be obtained, and the light source is set as a ring-shaped light source, to provide stable and uniform illumination for the imaging area.