This study presents a research of a revolutionary 3D light-field technology, bringing distinguishing features of real 3D visual effect to public. The technical route of the research is carried out in four aspects: the establishment of 3D models, the capture of light-field information from 3D models, the reconstruction of light-field information, and the integration technique of microlens and micro graphics. Firstly, the establishment of 3D models ensures accurate acquisition of light-field information. Then, a series of arrayed images from different viewing angles are fractured from established 3D models with parallax information. And these arrayed images are transformed and compressed into micro graphics. Finally, a full parallax effect of strong movement and depth can be observed by means of microlens technique, with adaptability to variable light sources.

Based on this technology, the main achievements are listed as followed:

1. Strong dynamic and stereotype features. By overlaying dynamic key frames on 3D models, five unique series of dynamic and floating features are designed which are ‘Switch’, ‘Strong Dynamics’, ‘Variable Depth’, ‘Dance’ and ‘Animation’. All these designs demonstrate that this technology can provide highly flexible and customized features.
2. High integration. This technology can serve as a wide platform which enables the integration of various optical security features effectively. Not only a variety of traditional surface micro-structures can be combined such as hologram and plasmonics, but also thin film stacks such as color shifting can be integrated to enhance the optical security features.
3.  Coloration in precise register. The precise coloration of each design element is achieved by the in-house proprietary process developed fromsemiconductor industry, which guarantees the register error in nanometer scale. It provides the 3D depth and floating features with different color, which acts much closer to the reality.

 In general, the 3D light-field technology brings the striking and vivid visual effects, which makes the features ‘easy to identify’ to public. Meanwhile, the algorithm complexity, the integration of multiple optical features and very unique process further ensure the security of the technology, making it “difficult to forge”. Therefore, this technology shows a promising future and great potential in the field of valued optical document security.