Apparatus for eye tracking
US9804389B2 · kind B2 · utility
71Cited by
10References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 23, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/193
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the waveguide, and a detector optically coupled to the waveguide. Disposed in the waveguide is at least one grating lamina for deflecting the illumination light towards the eye along a first waveguide path and deflecting the image light towards the detector along a second waveguide path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.