Multi-Wavelength Optical Sensor for Blood Flow Detection
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Solution Overview
Problem
Conventional optical measurement apparatuses for living bodies lack the accuracy in measuring information due to limitations in light emission and detection systems, particularly in detecting blood flow positions within the body.
Innovation Solution
An optical sensor system with a light source module that emits multiple light beams of different wavelengths onto the same position of the object, using a combination of surface emitting laser arrays and optical elements to ensure precise light propagation and detection, allowing for high-resolution diffuse optical tomography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical measurement apparatuses are used, then the device complexity is low, but the measurement precision of blood flow positions is insufficient
Solution Approach 1:
The light source is divided into multiple independent laser emitting units, each capable of emitting light at different wavelengths. This segmentation allows precise control of light propagation paths for different wavelengths, enabling high-resolution detection of blood flow positions by measuring optical characteristics at multiple wavelengths simultaneously
Solution Approach 2:
The patent combines multiple laser emitting units with different wavelengths into a single integrated light source module, and merges the detection of multiple wavelengths into a unified detection system. This merging maintains high measurement precision while reducing overall system complexity compared to using separate systems for each wavelength
2Measurement precision
If multiple light beams with different wavelengths are emitted onto the same position, then the measurement precision improves, but the device complexity increases due to multiple optical elements
Solution Approach 1:
Each laser emitting unit is designed to emit light at a specific wavelength, making the optical elements wavelength-specific rather than requiring separate optical paths for each wavelength. This multi-functionality approach allows the system to handle multiple wavelengths through a unified optical structure, improving measurement precision without proportionally increasing device complexity
Solution Approach 2:
The patent applies different optical characteristics to different parts of the light source, with each laser emitting unit having optimized optical properties for its specific wavelength. This local quality optimization allows precise control of light propagation for each wavelength while maintaining an integrated system structure
3Measurement precision
If conventional single-wavelength light sources are used, then the device complexity is low, but the detection precision of optical characteristics is insufficient
Solution Approach 1:
The light source is segmented into multiple laser emitting units, each responsible for a specific wavelength range. This segmentation enables the system to capture optical characteristics at multiple wavelengths, significantly improving blood flow position detection precision while maintaining manageable system complexity through modular design
Solution Approach 2:
The system changes the wavelength parameter of emitted light by selecting different laser emitting units, allowing measurement of optical characteristics under different wavelength conditions. This parameter variation enables precise detection of blood flow positions by analyzing how optical properties change with wavelength
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 measurement of optical characteristics and blood flow positions within the body, improving detection resolution and reducing noise, thereby enhancing the precision of brain function analysis and blood flow monitoring.
Implementation Method 1
each light source is a surface emitting laser array
Implementation Method 2
a plurality of individual optical elements arranged on optical paths of the light beams with different wavelengths
Implementation Method 3
a detecting system detecting the light which is emitted by the emitting system and which has propagated through the object under test
Data Source
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Figure 3
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AI summary
An optical sensor is provided. The optical sensor has an emitting system including at least one light emitting device which emits light onto an object; and a detecting system detecting the light which has been emitted by the emitting system and which has propagated through the object. The light emitting device is capable of emitting a plurality of light beams with different wavelengths onto substantially the same position of the object.