Compact eye tracking using folded display optics
US10545347B2 · kind B2 · utility
1Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2018 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical assemblies for use in virtual and augmented reality environments are described. The optical assemblies may include lenses, filter stacks, cameras, and image projecting devices. For example, the optical assemblies may include at least one lens, a first filter stack between the at least one lens and an image projecting device, a second filter stack between the first filter stack and the image projecting device, and a camera configured to capture images of an infrared reflection of light through the at least one lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.