Near-eye optical element with embedded hot mirror
US10880542B1 · kind B1 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Dec 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0187
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A near-eye optical element includes a refractive layer and at least one infrared reflecting layer. The refractive layer has an eyeward side and a scene side. The eyeward side of the refractive layer is disposed opposite of the scene side of the refractive layer. The infrared reflecting layer is embedded in the refractive layer and configured to receive an infrared beam from an infrared illuminator and direct the infrared beam out the eyeward side of the refractive layer to illuminate an eyebox area with infrared light. The infrared reflecting layers are configured to reflect the infrared beam and pass visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.