Ultra-thin lens, virtual image display device using same, and near-eye display
US11966058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2022 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Jan 5, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0192
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ultra-thin lens for augmented reality (AR) display includes: a primary lens, an intermediate lens, and a secondary lens. After entering the primary lens, image light undergoes two total reflections, then enters the intermediate lens and is partially reflected, then is directed to a human eye through the intermediate lens and the primary lens. The secondary lens is configured on the other side of the intermediate lens, and environmental light is directed to the human eye through the secondary lens, the intermediate lens, and the primary lens. According to the ultra-thin lens, total reflection and light splitting functions of the image light are realized respectively through the primary lens and the intermediate lens, so that the entire lens has a thin and light profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.