Study on improvement of CRI using RGB LED lights for underwater environments

This study presents a novel LED (light-emitting diode) light source. The device was simulated in both air and underwater environments by using TracePro. This device can adjust the current to change the power of different colors (M-E-L-R, M-E-L-G and M-E-L-B) to improve its color rendering index (CRI) in different scattering environments. The simulated results were analyzed and used to build a design module for use in underwater LED devices. In underwater experiments, the ordered sequence of light efficiency values was M-E-L-G > M-E-L-B > M-E-L-R. Underwater measurements of the performance of the device confirmed the simulated results.