Apparatus or method for projecting light internally towards and away from an eye of a user
US11125998B2 · kind B2 · utility
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10References
19Claims
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Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus including an internal optical projection element configured to project light internally towards an eye of a user of the apparatus; an external optical projection element configured to project light externally away from an eye of the user of the apparatus; and one or more optical engines configured to provide light to the internal optical projection element and the external optical projection element. The apparatus preferably further includes a light guide with diffractive in and out-coupling elements and is configured as a head mounted display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.