In this study, a dual-band band-pass filter (BPF) is designed to separate the dual-wavelength emissions of 5-aminolevulinic acid (5-ALA) and fluorescence sodium (yellow dye). The dual-band BPF was investigated experimentally to improve its accuracy, speed, and energy efficiency in clinical settings. The possibility of dual fluorescence emissions with a single irradiation is proposed, which saves energy by producing 2 fluorescence diagnostic effects using a single piece of equipment.
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