Spectroscopic Imaging Device Dynamic Wavelength Control
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Solution Overview
Problem
Spectroscopic imaging devices face challenges in balancing high accuracy and speed in measurement processes, as existing methods require longer exposure times for high S/N ratios, which is inefficient for situations needing rapid, low-accuracy measurements.
Innovation Solution
A control method for spectroscopic imaging devices that switches between high accuracy and high speed modes by adjusting the number of wavelengths imaged, allowing for flexible measurement spectra generation based on the mode, using a spectral element with variable wavelength interference filters to change output wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the spectroscopic imaging device captures more images in different wavelength ranges to obtain high accuracy correction data, then the measurement precision is improved, but the time required for imaging increases
Solution Approach 1:
The patent applies dynamics by making the spectral element tunable, allowing the system to dynamically adjust the number of wavelengths captured based on measurement requirements. The spectral element can switch between capturing N1 wavelengths for high accuracy and N2 wavelengths for rapid measurement, enabling the system to adapt its measurement configuration in real-time rather than being fixed.
Solution Approach 2:
The patent changes the parameter of wavelength count from a fixed value to a variable parameter. By controlling the spectral element to output different numbers of wavelengths (N1 or N2), the system can adjust its measurement resolution dynamically. This parameter change allows the same hardware to perform both high-precision and rapid measurements by simply changing how many wavelength channels are activated.
2Measurement precision
If the spectroscopic imaging device ensures a predetermined exposure time to obtain a high S/N ratio in each pixel, then the measurement precision is improved, but the productivity decreases
Solution Approach 1:
The system dynamically adjusts the number of wavelength channels based on measurement needs. When high S/N ratio is required, it uses N1 wavelengths with predetermined exposure time. When productivity is prioritized, it uses N2 wavelengths with shorter exposure time, allowing the system to optimize the balance between signal quality and measurement speed.
Solution Approach 2:
The patent applies partial action by capturing only N2 wavelengths when full spectral resolution is not required. This partial measurement approach reduces the exposure time and increases throughput while still providing sufficient measurement data for applications where high precision is not critical, avoiding the excessive action of capturing all N1 wavelengths in every case.
3Measurement precision
If the spectroscopic imaging device captures images with more wavelength channels, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The spectral element serves multiple functions: it can operate in high-precision mode capturing N1 wavelengths and in rapid measurement mode capturing N2 wavelengths. This multi-functionality allows a single device to meet diverse measurement requirements without needing separate specialized devices, reducing overall system complexity while maintaining high measurement precision when needed.
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 efficient high accuracy measurements in rigorous scenarios while allowing for rapid, low-accuracy measurements when needed, improving user convenience and measurement efficiency by reducing time and maintaining high resolution.
Implementation Method 1
a spectral element 12 that separates incident light into a plurality of wavelengths... a variable wavelength interference filter... capable of changing a spectral wavelength
Data Source
AI summary
A control method of a spectroscopic imaging device including an imaging element and a spectral element, the control method includes causing the spectroscopic imaging device to generate a first measurement spectrum consisting of N1 wavelengths by imaging a target object by making output wavelengths of a spectral element different when the spectroscopic imaging device is in a high accuracy mode and causing the spectroscopic imaging device to generate a second measurement spectrum consisting of N2 wavelengths by imaging the target object by making the output wavelengths of the spectral element different when the spectroscopic imaging device is in a high speed mode, in which N1 is an integer greater than or equal to two, and N2 is an integer less than N1.