Eye-box extension in micro-OLED augmented reality near-eye display with a holographic multi-path optical element combiner

초록

We present a holographic multi-path (HMP) approach to extend the eye-box of the off-axis reflective holographic optical element (HOE) combiners for micro-OLED augmented reality (AR) near-eye displays (NEDs). The compact form factor design requirement highly constrains the eye-box and the field of view (FOV) in the off-axis reflection HOE AR combiners. In this Letter, we show that multiplexing multiple independent optical paths into a HOE effectively extends the eye-box. In the proposed multi-path multiplexing approach, separate partial images of a micro-OLED are routed along the multiplexed beam paths and combined to generate a complete AR image. The experiment verifies that the multi-path multiplexing achieves a twofold increase in the eye-box compared to previous results, enhancing the user experience for AR applications. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.