We are pleased to share that our latest study, “Refocusing performance of multi-spectral light field camera through spectrally and depth-resolved flame imaging,” has been published in Optics and Laser Technology, a leading journal of the Optics and Laser Publishing Group. This EPSRC-funded research explores how different spectral filter designs and multi-spectral light field camera (MS-LFC) configurations affect the quality of refocused flame images.
Through detailed simulations, it has been found that both spec
tral distribution and angular sampling are essential for image quality. Filters with centrally distributed wavelengths and adequate angular coverage consistently produce sharper images. In contrast, carefully designed angular sparsity can preserve clarity at certain depths, reducing the need for extensive data collection. Based on these findings, practical design guidelines have been proposed for MS-LFC systems, including optimized spectral filter designs and angular sampling strategies.
These guidelines will aid the development of advanced optical diagnostic tools capable of capturing flames in three dimensions and across multiple spectral bands, offering insights into complex flame behavior and enabling more efficient combustion monitoring and diagnostic technologies.
Read our paper here: https://doi.org/10.1016/j.optlastec.2026.115127