*Please note time and location changed on 8/14/24

“Full-color 3D holographic augmented-reality displays with metasurface waveguides”

Speaker: Manu Gopakumar, Ph.D. Student, Electrical Engineering, Stanford University and Gun-Yeal Lee, Postdoctoral Scholar, Electrical Engineering, Stanford University

Abstract: Emerging spatial computing systems seamlessly superimpose digital information on the physical environment observed by a user, enabling transformative experiences across various domains, such as entertainment, education, communication and training. However, the widespread adoption of augmented-reality (AR) displays has been limited due to the bulky projection optics of their light engines and their inability to accurately portray three-dimensional (3D) depth cues for virtual content, among other factors. We will discuss a holographic AR system that overcomes these challenges using a unique combination of inverse-designed full-color metasurface gratings, a compact dispersion-compensating waveguide geometry, and artificial-intelligence-driven holography algorithms. These elements are co-designed to eliminate the need for bulky collimation optics between the spatial light modulator and the waveguide and to present vibrant, full-color, 3D AR content in a compact device form factor. To deliver unprecedented visual quality with our prototype, we developed an innovative image formation model that combines a physically accurate waveguide model with learned components that are automatically calibrated using camera feedback. Our unique co-design of a nanophotonic metasurface waveguide and artificial-intelligence-driven holographic algorithms represents a significant advancement in creating visually compelling 3D AR experiences in a compact wearable device.

“Laser beam scanning for augmented reality and near-to-eye display applications”

Speaker: Bharath Rajagopalan, Ph.D., Director, Strategic Marketing, STMicroelectronics, Inc.

Abstract: One of the key challenges for augmented reality is the development of ultra-compact, lightweight, low-power near-to-eye display solutions with good image quality. Laser Beam Scanning (LBS) technologies can meet these key requirements and deliver form-factors that enable light weight, fashionable, all-day wearable AR smart glasses with the ability to scale resolution and field-of-view (FoV) with low power consumption.

In this talk, we will briefly highlight the key technologies and solutions behind LBS that enable AR smart glasses, as well as more complex mixed reality HMD devices, including MEMS Micromirror scanners systems, laser diode modules, waveguides and LBS systems design considerations. Finally, we will briefly touch upon the ecosystem that supports end product manufacturers with key technologies and devices.