Apparatus for eye tracking
US9456744B2 · kind B2 · utility
125Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jun 21, 2033 |
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.