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Eye tracking with a diffractive AR waveguide
Optics Letters
|May 15, 2026
Summary
This study introduces a novel eye-tracking system using computational imaging and standard augmented reality waveguides. This method enhances detection capabilities for wearable devices, improving human-computer interaction.
Area of Science:
- Computer Vision
- Human-Computer Interaction
- Optical Engineering
Background:
- Wearable eye-tracking devices face limitations due to side-view camera configurations.
- Existing front-view systems often require customized optical structures for clear eye imaging.
Purpose of the Study:
- To develop an eye-tracking system that overcomes limitations of current wearable devices.
- To enable the use of non-customized diffractive augmented reality waveguides for eye tracking.
Main Methods:
- Utilized a computational imaging approach with a non-customized diffractive augmented reality waveguide.
- Employed computational reconstruction to correct optical distortions, removing the need for hardware-based optical mapping.
- Validated imaging quality using quantitative metrics and gaze estimation tasks.
Main Results:
- Achieved an experimental gaze angular resolution of 0.776 degrees with a fixed-distance eyeball model.
- Demonstrated the effectiveness of computational reconstruction in addressing optical distortions.
- Validated the system's performance in downstream gaze estimation tasks.
Conclusions:
- The proposed system enables the reuse of commercial display waveguides for sensing applications.
- Offers a compact and cost-effective solution for advanced augmented reality system integration.
- Advances the field of human-computer interaction through improved wearable eye-tracking technology.
