Raman Spectroscopy Focus Positioning for Reliable Sample Analysis
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Solution Overview
Problem
Existing optical measurement equipment methodologies face challenges in minimizing distortion of information carried by light, particularly in non-destructive analysis of sample characteristics, such as stress, structure, and phase, which affects the reliability of Raman spectroscopy results.
Innovation Solution
A sample analysis method using Raman spectroscopy that involves adjusting the position of the sample along an adjustment direction to optimize the focus of light, calculating peak intensities, and determining a measurement reference position to enhance the reliability of Raman scattered light analysis, thereby reducing distortion and improving the accuracy of sample characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light is applied to the sample without optimizing the focus position, then the analysis process is simpler and faster, but the measurement precision and reliability of Raman spectroscopy results deteriorate due to information distortion
Solution Approach 1:
The patent applies preliminary action by performing a focus optimization process before the actual Raman measurement. The system automatically adjusts the objective lens position to find the optimal focal point where the Raman signal intensity is maximized, ensuring that subsequent measurements are performed at the correct focus position. This preliminary focusing step eliminates information distortion caused by improper focus while maintaining measurement precision.
Solution Approach 2:
The system implements self-service through automatic focus optimization that does not require manual intervention. The control unit automatically adjusts the objective lens position based on real-time monitoring of Raman signal intensity, allowing the system to self-correct focus issues and maintain optimal measurement conditions without operator involvement.
2Reliability
If the objective lens position is automatically adjusted to optimize focus, then the reliability of Raman spectroscopy results is improved, but the analysis time and process complexity increase
Solution Approach 1:
The patent maintains continuity of useful action by implementing an automatic, continuous focus optimization process that seamlessly integrates with the measurement workflow. The system continuously monitors Raman signal intensity and adjusts the objective lens position in real-time during the measurement process, ensuring that focus optimization does not interrupt the analytical workflow but rather enhances it continuously.
Solution Approach 2:
The system employs feedback control by monitoring the intensity of Raman scattered light in real-time and using this information to automatically adjust the objective lens position. The control unit receives feedback signal from the detector and modifies the lens position to maximize signal intensity, creating a closed-loop system that automatically maintains optimal focus conditions throughout the measurement.
3Measurement precision
If multiple positions are analyzed to find the optimal focus, then the accuracy of sample characterization is improved, but the number of measurements and data processing complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the focus optimization process into discrete positional steps. The system evaluates Raman signal intensity at multiple predetermined objective lens positions along the optical axis and identifies the position yielding maximum signal. This segmented approach to focus optimization allows systematic comparison of different focal positions while maintaining a structured and manageable measurement process.
Data Source
AI summary
A sample analysis method using Raman spectroscopy and an electronic device are provided. The sample analysis method includes a plurality of unit analysis steps (e.g., acts or tasks) including changing a plurality of positions of the sample along an adjustment direction, calculating a plurality of peak intensities, each from a Raman spectrum at one of the different plurality of positions along the adjustment direction of the sample, in which a Raman spectrum having the greatest peak intensity is obtained when the sample is arranged at a first position, determining the first position as a measurement reference position of the sample, applying a light to the sample when the sample is arranged at the measurement reference position, and analyzing the characteristic of the sample based on Raman scattered light generated as the light is provided to the sample.