Spectrum Analysis Stray Light Correction via Pre-calculated Matrices
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Solution Overview
Problem
Current spectrum analysis apparatuses face challenges in accurately eliminating the effect of stray light from wavelength distributions in a short time, requiring extensive measurement and calibration due to the narrow bandwidth of monochromatic light rays and the difficulty in distinguishing between incident and stray light components.
Innovation Solution
A spectrum analysis apparatus with a controller that selects an adequate correction device based on pre-acquired corrected absorption spectra from samples with varying light absorption characteristics, allowing for the elimination of stray light effects by aligning peak heights and using a stray light correction matrix to correct absorption spectra, thereby reducing measurement time and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If monochromatic light rays are used for calibration, then measurement accuracy is improved, but measurement time increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing stray light correction matrices for multiple hypothetical stray light conditions before actual measurement. During calibration, the system only needs to identify which pre-calculated matrix to use, rather than performing time-consuming measurements for each condition. This allows the system to prepare correction data in advance, reducing actual measurement time while maintaining accuracy.
Solution Approach 2:
The patent applies preliminary anti-action by pre-computing correction matrices that counteract various stray light effects before measurement occurs. These pre-calculated correction matrices are stored and selected based on the actual measurement conditions, allowing the system to eliminate stray light effects without performing lengthy calibration measurements during actual use.
2Measurement precision
If multiple measurements are performed to obtain sufficient light intensity, then measurement accuracy is improved, but productivity decreases
Solution Approach 1:
The system performs preliminary calculations to generate stray light correction matrices for various conditions before actual measurement. During calibration, it only needs to select the appropriate pre-calculated matrix based on measured parameters, reducing the number of repeated measurements needed while maintaining statistical reliability.
Solution Approach 2:
The patent implements a dynamic calibration approach where the system adapts between full measurement mode and rapid selection mode. Based on the specific calibration needs and available time, the system can either perform comprehensive measurements or quickly select from pre-calculated matrices, optimizing the balance between accuracy and speed for different operational scenarios.
3Object-generated harmful factors
If high-cut filter is used to remove short wavelength components, then stray light elimination is improved, but relationship between incident and stray light wavelengths cannot be determined
Solution Approach 1:
The patent introduces an intermediary computational model (stray light correction matrix) that mathematically represents the relationship between incident light and stray light wavelengths. Instead of relying on physical filters that block wavelength information, the system uses pre-calculated correction matrices that encode wavelength relationships, allowing the system to eliminate stray light while preserving wavelength information through mathematical correction rather than physical filtering.
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
This approach enables accurate and efficient elimination of stray light effects from wavelength distributions in a short time, reducing the number of measurements needed and improving the precision of spectral analysis by using pre-acquired correction devices and matrices.
Implementation Method 1
a spectral member (diffraction grating) configured to split light incident thereon by wavelength components
Implementation Method 2
a detector configured to measure intensities of light rays split by the wavelength components by means of the spectral member
Implementation Method 3
correcting a plurality of observed absorption spectra each indicating absorbance of light passing through a plurality of samples
Data Source
AI summary
In a spectrum analysis apparatus, a controller controls selection of an adequate the correction device based on a plurality of corrected absorption spectra corrected by a plurality of correction devices acquired in advance for eliminating an effect of stray light.