Bidirectional Reflectance Spectroscopy for Protected Trace Mineral Samples
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Solution Overview
Problem
Current bidirectional reflectance spectroscopy measurement systems are inadequate for trace mineral samples of extraterrestrial objects, failing to meet the needs of real trace samples and provide sample protection, which is essential for understanding the spectral characteristics and material composition of these precious samples.
Innovation Solution
A bidirectional reflectance spectroscopy measurement device comprising a monochromatic illumination module, microscopic spectroscopy measurement module, and sample carrying module, with adjustable angles and wavelength-selectable illumination, capable of obtaining spectral data in different spectral bands while protecting the sample.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bidirectional reflectance spectroscopy measurement systems are used, then spectral measurement capability is provided, but sample protection is insufficient and sample consumption is high
Solution Approach 1:
The sample is nested within a protective sample holder that is itself nested within the measurement system. The sample holder provides multiple layers of protection (physical containment, environmental control) while allowing the sample to remain accessible for measurement, thus protecting the precious extraterrestrial sample without compromising measurement capability.
Solution Approach 2:
The system creates optical copies of the sample through bidirectional reflectance spectroscopy measurements, capturing spectral information from multiple angles and wavelengths. This allows virtual analysis of the sample without requiring physical manipulation or consumption of the actual sample material, reducing sample loss while maintaining measurement reliability.
2Adaptability or versatility
If conventional measurement systems are used, then spectral data can be obtained, but the system lacks adjustable illumination and detection angles for bidirectional reflectance measurement
Solution Approach 1:
The measurement system incorporates dynamically adjustable illumination and detection angle components that can be rotated and positioned to achieve various bidirectional measurement configurations. These dynamic elements allow the system to adapt to different measurement requirements while maintaining a relatively compact overall structure through coordinated movement of optical components.
Solution Approach 2:
The system employs universal optical components that serve multiple functions: the same illumination system can provide both incident light and reference measurements, the detection system can capture reflectance at multiple angles, and the sample holder can perform both positioning and protection functions. This multi-functionality reduces the number of separate components needed while achieving comprehensive bidirectional reflectance measurement capability.
3Measurement precision
If trace mineral samples of extraterrestrial objects are measured, then valuable geological information can be obtained, but the samples are extremely precious and require minimal handling
Solution Approach 1:
The system introduces an intermediary protective holder that mediates between the measurement system and the precious sample. This holder provides a controlled environment that prevents direct contact between the sample and external contaminants, while still allowing optical measurements to pass through. The intermediary structure thus protects the sample from contamination and mechanical damage while maintaining measurement precision through appropriate optical design.
Solution Approach 2:
The measurement system incorporates an inert environment control mechanism that maintains a protected atmosphere around the sample during measurement. This prevents contamination from external air molecules and environmental factors, ensuring that the spectral characteristics of the extraterrestrial sample remain unchanged and accurate, while minimizing any harmful effects on the precious sample material.
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 device enables accurate spectral data acquisition with high signal-to-noise ratio and sample protection, allowing for precise identification of mineral types and properties, and supports the construction of material composition inversion models.
Implementation Method 1
the monochromatic illumination module is configured to output a total monochromatic light beam of millimeter scale and reflect it to a surface of the sample to be measured through the light outlet
Implementation Method 2
the microscopic spectroscopy measurement module is configured to receive the light beam reflected from the surface of the sample to be measured and obtain spectral data of different spectral bands of the sample to be measured within a visible-mid-wave infrared spectral range
Data Source
AI summary
A bidirectional reflectance spectroscopy measurement device for trace mineral samples of extraterrestrial objects includes a monochromatic illumination module, a microscopic spectroscopy measurement module, a sample carrying module and a control and data analysis module, wherein the monochromatic illumination module is configured with a light outlet, the microscopic spectroscopy measurement module is configured with a light inlet, the sample carrying module is located between the light outlet and the light inlet, and the control and data analysis module is electrically connected to the monochromatic illumination module, the microscopic spectroscopy measurement module and the sample carrying module respectively, the sample carrying module is configured to place and protect a sample to be measured, by synchronously controlling the monochromatic illumination module and the microscopic spectroscopy measurement module, spectral data of different spectral bands of a trace sample to be measured in the sample carrying module is obtained.