High transmission light control film comprising alternating transmissive and absorptive regions
US12313864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light control film comprises a light input surface and a light output surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface; and TIR cladding layers. The TIR cladding layer having a refractive index, nTIR. The transmissive regions alternate between high refractive index transmissive regions having a refractive index, n2, and low refractive index transmissive regions having a refractive index, n1. The absorptive regions comprise a core having a refractive index, ncore, adjacent an AR cladding layer; wherein n1<n2 and nTIR<n2. The TIR cladding layers are adjacent the high refractive index transmissive regions. The cores have an aspect ratio of at least 20. The high refractive index transmissive regions have a wall angle of 6 degrees or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.