Optical film
US11442204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Dec 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2003/0093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film is disclosed. The optical film may include a first base film, and a diffusion lens layer disposed on one surface of the first base film and including a plurality of square pyramid-shaped lenses. Edges meeting at vertices of the plurality of square pyramid-shaped lenses may be curved lines. Among the plurality of square pyramid-shaped lenses, one surface of a first square pyramid-shaped lens may meet one surface of a second square pyramid-shaped lens to form a boundary line, and the one surface of the first square pyramid-shaped lens and the one surface of the second square pyramid-shaped lens may be symmetrical with respect to the boundary line as an axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.