Advancing AR Glasses

Key Takeaways

with over 60 percent of the population wearing glasses incorporating prescription lenses into ar displays is vital to increasing adoption today commercial prototypes offer additional prescription lenses or a glasses compatible design but this increases size and weight of the devices our work takes the opposite approach incorporating a functional ar display into a prescription lens to match 2020 acuity across the field of view an ar display would need to provide 400 megapixel resolution but driving a display at this resolution requires too much bandwidth power and computation to be feasible by combining a low resolution image in the user's periphery with high resolution inset in the fovea we can better match the display's output to the human visual system's performance in this installation we demonstrate two novel wearable augmented reality prototypes inspired by the human visual system foveated ar and prescription ar we demonstrate prescription ar a set of five millimeter thick corrective lenses with an embedded ar display this design promises to increase accessibility and integration for users with prescription lenses for myopia astigmatism and hyperopia the prescription ar display uses a beam shaping lens and an in-coupling prism to relay an oled image to the eye via total internal reflection and a half mirror-coated free-form combiner surface our prototype corrects the viewer's vision while delivering an augmented image located at a fixed focal depth the display provides a resolution of 26 cycles per degree over a 32 degree field of view we demonstrate a dynamically foveated near-eye ar display that closely matches human visual acuity our foveated ar display optically combines light from two sources a high resolution small field of view foveal display and a low resolution large field of view peripheral display our display provides a resolution of up to 60 cycles per degree in the fovea with a 12 millimeter dynamic eye box the design covers a diagonal field of view of over 100 degrees this is a rendering of our wearable prototype in green we visualize the optical path of the peripheral display the hoe is moved to keep this viewpoint aligned with the user's pupil center in orange we visualize the optical path of the foveal display an image of the micro oled which is also moved along with the eye is reflected by a half mirror and delivered to the user's eye via an image combiner a motor drives a double threaded screw that moves the oled and hoe at a specific travel ratio of three to one we aim to forward human visual system inspired displays that integrate system level solutions to technical challenges and address the needs of the broadest possible user base through improving display experiences and expanding the availability and integration of prescription augmented reality we hope to one day make ar a reality for everyone you