Eye-tracking system using a scanning laser assembly
US10848753B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jul 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0187
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head-mounted display includes an eye tracking system, implemented to determine the location of the user's gaze, which is configured using a scanning laser assembly, photodetector, and a controller. Light with wavelengths within the infrared range is emitted toward the user's eye from the scanning laser and is reflected off at various emission angles. The reflected light is detected by a photodetector or plurality of photodetectors located along a periphery of the optics block. The photodetector records a signal intensity, determined by the emission angle of the reflected infrared light. The controller, having been previously calibrated to indicate eye movements based on these varying signal intensities, provides information pertaining to the location of the user's eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.