Holographic waveguide eye tracker
US10209517B2 · kind B2 · utility
80Cited by
483References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 19, 2014 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | May 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/311
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eye tracker having a first waveguide for propagating illumination light along a first waveguide path and propagating image light reflected from at least one surface of an eye along a second waveguide path. At least one grating lamina for deflecting the illumination light out of the first waveguide path towards the eye and deflecting the image light into the second waveguide path towards a detector is disposed adjacent an optical surface of the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.