Optical film
US12339441B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2021 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | May 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0081
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optical film includes a main body and an optical structure. The optical structure protrudes from a surface of the main body. The optical structure includes a first side surface and a second side surface. A first connecting line and a first angle less than 90 degrees are formed between the first side surface and the surface of the main body. A second connecting line and a second angle less than 90 degrees are formed between the second side surface and the surface of the main body. When viewed from a normal vector of the surface of the main body, a third angle is formed between an extension line of the first connecting line and an extension line of the second connecting line, and the third angle is greater than 0 degree and less than 90 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.