High-precision four-dimensional hyperspectral imager integrating fluorescence spectral detection and 3D surface shape...

Area of Science:

• Optics and Photonics
• Spectroscopy
• 3D Imaging Technologies

Background:

• Accurate 3D surface morphology and spectral data are crucial for analyzing fluorescent objects.
• Existing imaging techniques often lack the integration of both spectral and 3D spatial information.
• High-resolution, multi-dimensional analysis is essential for advanced material science and object characterization.

Purpose of the Study:

• To propose and demonstrate a novel four-dimensional hyperspectral imager (FDHI).
• To integrate fluorescence spectral detection with 3D surface morphology measurement into a single system.
• To provide a solution for high-resolution 4D detection and analysis of fluorescent objects.

Main Methods:

• The FDHI system combines a hyperspectral line-scanner, a structured light stereo vision system, and a shared line laser.
• The line laser serves as both excitation light for fluorescence and scanning light for 3D profiling.
• Fluorescent and 3D spatial data are collected simultaneously and fused into 4D data points.

Main Results:

• The FDHI achieved excellent spatial resolution of 26.0 µm and spectral resolution of 3 nm.
• The system successfully fused spectral and 3D spatial data into a complete 4D dataset.
• High integration was achieved by sharing a single laser source for both imaging modalities.

Conclusions:

• The developed FDHI system offers a powerful tool for 4D detection and analysis of fluorescent objects.
• The system provides a meters measurement range with high spatial and spectral resolution.
• The integrated approach offers advantages in terms of efficiency and performance for complex object analysis.