Dispersive eye-box extension in micro-OLED augmented reality glasses with a dual-holographic dispersion-compensating reflective combiner

초록

We propose an eye-box extension method for augmented reality (AR) glasses utilizing a dual-holographic optical element (dual-HOE) and a micro-OLED (mu OLED) light source with a broadband spectrum. This scheme leverages the strong chromatic dispersion of HOE to significantly extend the eye-box without compromising AR quality. The proportional relationship between mu OLED spectral bandwidth and eye-box size is analyzed theoretically, indicating that a broader spectrum mu OLED provides a wider eye-box. Experimental results using a prototype demonstrate eye-box expansion up to 8 mm for mu OLED with a 60 nm spectral bandwidth. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.