40‐2: Invited Paper: Near‐Eye Augmented Reality Display with Enlarged Field of View Using Holographic Lens Array (Invited Paper)

In this paper, we propose a new optical design for see‐through displays by incorporating a discrete holographic lens array behind the transparent display panel. This approach enables retinal projection display (RPD) while achieving a one‐dimensional expansion of the field of view. RPD is one of the most promising near‐eye display techniques. It can directly converge light onto the center of the pupil and project the image directly onto the retina, effectively reducing the VAC problem. However, this design also has the drawback of a small eye box, which can lead to a loss of the viewport when the eye rotates significantly. To address this issue, this paper proposes a novel holographic lens array structure, where three holographic lenses are horizontally aligned behind the transparent display panel to focus the light. Thereby, the screen light can be focused onto the center of the pupil, forming three compact focal points within the pupil's range. This creates a continuous and complete image on the retina while mitigating the issue of viewpoint loss due to wide‐angle eye rotation. The simulation results show that optical structure with a holographic lens array enables a horizontal eye rotation limit of ±30° within a 28mm × 8mm display area and a focal length of 20mm while a traditional single holographic lens only allows for a horizontal eye rotation limit of ±20°.