Research on a domestic 3D visualization diffractive waveguide simulation module based on ray-field tracing

To our knowledge, this work introduces the first domestically developed 3D visualization module for optical waveguide design and simulation based on ray-field tracing. Using this module, we engineered a two-dimensional exit-pupil-expansion diffractive waveguide, demonstrating a systematic design workflow. The workflow integrates k-domain analysis, automated layout generation of grating regions within the optical waveguide, waveguide optimization, and ray-field tracing simulations, establishing a cohesive methodology for device development. The module extends beyond single-waveguide simulations to system-level analyses of near-eye displays, incorporating micro-dislplays, micro-projectors, and human eye models. By bridging microscopic and macroscopic scales, it enables holistic performance evaluation of AR optical systems, highlighting its capabilities and technical advantages. This module provides a robust and efficient platform for domestic optical engineers to advance optical waveguide design and simulation, thereby accelerating the industrialization and technological progression of AR optics in our country.