Near-eye display apparatus including lens with aspheric surfaces
US11592671B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A near-eye display apparatus is disclosed. The near-eye display apparatus includes a lens and an optical path folding assembly. The lens is configured to receive incident light of a first image, which is projected by a micro-display, and shape the first image; the lens includes a primary optical axis and a first lens face and a second lens face which are opposed in a first direction where the primary optical axis of the lens is positioned, and both the first lens face and the second lens face are aspheric surfaces; and the optical path folding assembly is configured to receive light of the first image shaped by the lens and fold an optical path from the lens to an exit pupil of the near-eye display apparatus. By adopting the bi-aspherical lens, image quality of the near-eye display apparatus can be improved and the volume can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.