Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane
US11099314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2018 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jan 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Optical system including a lightguide; a turning film, including a first smooth surface perpendicular to a display axis and a first structured surface including a plurality of first microstructures defining a first plurality of parallel grooves, where the turning film is optically coupled to the lightguide, where the turning film outputs light collimated in a first plane parallel to the display axis; and a lenticular diffuser, including a second smooth surface perpendicular to the display axis and a second structured surface comprising a plurality of second microstructures defining a second plurality of parallel grooves extending along a plane perpendicular to the display axis, where the lenticular diffuser is optically coupled to the turning film, where the lenticular diffuser reflects or refracts collimated light toward a second plane perpendicular to the first plane; where the first plurality of parallel grooves is perpendicular to the second plurality of parallel grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.