Fluorescence hyperspectral imaging system for analysis and visualization of oil sample composition and thickness

Area of Science:

• Optics and Photonics
• Spectroscopy
• Environmental Science

Background:

• Hyperspectral imaging offers valuable data for environmental monitoring and resource exploration.
• Existing systems can be bulky and complex, limiting field applicability.
• A need exists for compact, high-resolution, and user-friendly hyperspectral imaging solutions.

Purpose of the Study:

• To design and validate a compact fluorescence hyperspectral imaging system.
• To demonstrate the system's capability in identifying different oil products.
• To assess the system's potential for recognizing oil film thickness.

Main Methods:

• A novel prism-grating-prism (PGP) structure was designed for the imaging spectrometer.
• The system features a spectral range of 400-1000 nm with 2.5 nm resolution and weighs under 1.7 kg.
• Data acquisition utilized the push-broom method, followed by advanced processing including normalization, minimum noise separation, visualization, and support vector machine classification.

Main Results:

• The developed PGP fluorescence hyperspectral imaging system successfully identified various oil products.
• The system demonstrated the ability to accurately recognize oil film thickness.
• The compact and stable "straight cylinder" design simplified installation and adjustment.

Conclusions:

• The PGP fluorescence hyperspectral imaging system is a viable tool for oil detection and characterization.
• The system's portability and performance support applications in oil spill response and environmental assessment.
• This technology holds promise for diverse fields including resource exploration and disaster monitoring.