A Novel Camera-Free Eye Tracking Sensor for Augmented Reality Based on Laser Scanning

Johannes Meyer, Thomas Schlebusch, Wolfgang Fuhl, Enkelejda Kasneci

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Next generation AR glasses require a highly integrated, high-resolution near-eye display technique such as focus-free retinal projection to enhance usability. Combined with low-power eye-tracking, such glasses enable better user experience and performance. We propose a novel and robust low-power eye-tracking sensor for integration into retinal projection systems. In our approach, a MEMS micro mirror scans an IR laser beam over the eye region and the scattered light is received by a photodiode. The advantages of our approach over typical VOG systems are its high integration capability and low-power consumption, which qualify our approach for next generation AR glasses. Here, we present a mathematical framework to estimate the achievable gaze angle resolution of our approach. We further show the viability of the proposed eye-tracking sensor based on a laboratory setup and discuss power consumption and gaze angle resolution compared to typical eye-tracking techniques.

Original languageEnglish
Article number9149591
Pages (from-to)15204-15212
Number of pages9
JournalIEEE Sensors Journal
Volume20
Issue number24
DOIs
StatePublished - 15 Dec 2020
Externally publishedYes

Keywords

  • AR glasses
  • MEMS scanned laser eye tracking
  • eye tracking sensor
  • retinal projection

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