Methods and apparatus for forming polarized films and glasses
US10675824B2 · kind B2 · utility
0Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2018 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Sep 9, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2709/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods are disclosed for forming polarized films and glasses having polarization efficiency that is varied in a predetermined design. In particular, such designs include monochrome and color polarization density gradients, where the non-polarized areas of films and glasses allow viewing of polarized displays without distortion. The methods include forming films and glasses that have visually uniform density while still incorporating polarization gradients. The disclosed methods also enable creation of polarization filters and glasses with increased optical density and reduced glare from multiple angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.