Free-form prism-lens group and near-eye display apparatus
US12111471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2022 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Oct 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A free-form prism-lens group includes: a primary prism, a first auxiliary lens and a second auxiliary lens, the primary prism includes three optical surfaces, the first auxiliary lens is arranged adjacent to the primary prism and is not used for imaging the image light entering the first auxiliary lens; the second auxiliary lens is arranged adjacent to the primary prism and a gap with a predetermined thickness is arranged between the second auxiliary lens and the primary prism, the second auxiliary lens extends in a direction perpendicular to an optical axis to cover an effective aperture of the image light entering the second auxiliary lens from the primary prism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.