Transparent diffusers for lightguides and luminaires
US9880328B2 · kind B2 · utility
13Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Dec 5, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-transmitting structure comprising a substrate having a plurality of regions where at least two of the plurality of regions have different refractive indices, an optical path length of light transmitted from a first light source through the plurality of regions is substantially constant, and where light transmitted from a second light source into the substrate is scattered by at least one of the plurality of regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.