Infrared microled based invisible illumination for eye tracking
US11579444B1 · kind B1 · utility
2Cited by
2References
20Claims
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Key dates
| Filing date | Jun 2, 2022 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Jun 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/84
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Eye-tracking systems and methods utilize transparent illumination structures having a plurality of IR μLEDs distributed within the transparent viewing area of illumination structures. The μLEDs are small enough (<100 μm) that they are not visible by a user during use of an HMD or other mixed-reality device, for example, such that they can be positioned within the line-of-sight of the user through the illumination structure and without visibly obscuring or interfering with the user's view of the mixed-reality environment by the mixed-reality device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.