Free-form prism-lens group and near-eye display apparatus
US11327308B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2019 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Aug 5, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A freeform prism-lens group includes: a primary prism; a first auxiliary lens; and a beamsplitter film between the primary prism and the first auxiliary lens and having a predetermined beamsplitting ratio; wherein: the first auxiliary lens has a first optical surface substantially conforming to a neighboring freeform surface of the primary prism; and the first auxiliary lens has a second opposing optical surface distal from the primary prism that is planar, aspheric, or spherical with a curvature radius greater than 100 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.