Figure 4

Visualization of the depolarization metrics in response to the virtual variable waveplate that was placed at the incident path of the illumination in the numerical simulation. Common raw data of the melanin suspension at \(\times \)1 diluted ratio were used. For each depolarization metric, both the phase retardation \(\delta \) and the rotation angle \(\theta \) were changed from 0 to \(\pi \) rad and from \(-\pi /2\) to \(\pi /2\) with \(\pi /10\) rad steps and shown as horizontal and vertical axes, respectively. As a result, the results of 11 \(\times \) 11 conditions were visualized for each depolarization metric.