Retro-reflectivity array for enabling pupil tracking
US9420950B2 · kind B2 · utility
2Cited by
4References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 17, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/013
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical array system for performing pupil tracking using retro-reflectivity includes: an LED array including at least one on-axis LED and at least one off-axis LED, for illuminating pupils of a user within an active region; a high-speed camera with a gaming motion sensor, for capturing images of the pupils illuminated by the LED array; and a processor, coupled to the high-speed camera, for receiving the captured images and performing processing algorithms on them to isolate pupil information and thereby determine pupil presence and location within the active region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.