Design of Close Scleral Vascular Imaging System Used for Gazing Tracking

Scleral blood vessels are very stable biological features. Lightweight head-mounted scleral vascular imaging system can be widely used in personal identification, gaze tracking and many other fields. However, it is difficult to acquire clear images of scleral blood vessels at a small distance with traditional optical imaging systems. We proposed a new scleral vascular imaging system based on micro-lens array, which can capture the light field of scleral blood vessels near eyes with sub-image array. The system has a simple and integrative structure. And it can easily reconstruct the 3D position and structure of scleral blood vessels from multiple sub-aperture images.