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Hybrid liquid-lens-based diffractive spectral array computational imaging with a parallel fused spatially calibrated
Optics Express
|February 18, 2026
Summary
We developed a novel hybrid liquid-lens spectral imaging system using a parallel fused spatially calibrated 3D (PFSC3D) network for high-precision reconstruction. This miniaturized technology enhances spectral imaging capabilities with improved signal-to-noise ratios.
Area of Science:
- Optics and Photonics
- Computational Imaging
- Machine Learning for Imaging
Background:
- Spectral imaging technology is advancing towards miniaturization and improved performance.
- Existing systems face challenges in achieving high resolution, tunability, and compactness simultaneously.
Purpose of the Study:
- To propose a hybrid liquid-lens-based diffractive spectral array computational imaging technology.
- To enhance spectral imaging with miniaturization, efficiency, and tunability.
Main Methods:
- A hybrid system combining a tunable liquid zoom lens with spectral array multiplexing.
- Utilizing a parallel fused spatially calibrated 3D (PFSC3D) network for reconstruction.
- The PFSC3D network integrates a spatial calibration module into a 3D U-Net architecture.
Main Results:
- Reconstructed spectral range of 480-780 nm with 20 nm spectral resolution.
- Achieved mean peak signal-to-noise ratio (MPSNR) improvements of at least 1.8 dB over conventional methods.
- Demonstrated high-precision diffractive spectral array reconstruction.
Conclusions:
- The proposed hybrid system offers significant advantages for spectral imaging.
- This approach enables the development of miniaturized and embedded spectral array sensing technologies.
- The PFSC3D network provides superior reconstruction accuracy for spectral array imaging.
