Scleral coil eye tracking system
US10426338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wearable eye tracking system includes a pair of looping coils in a Helmholtz configuration and an additional looping coil. In one configuration, areas enclosed by the pair of looping coils in the Helmholtz configuration are in parallel with each other, while an area enclosed by the additional looping coil is offset from (i.e., not parallel with) the areas enclosed by the pair of looping coils. In this configuration, the pair of looping coils generates uniform magnetic fields between the two areas of the pair of looping coils in a first direction orthogonal to the areas of the pair of looping coils, and the additional looping coil generates additional non-uniform (or divergent) magnetic fields in a second direction transversal to the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.