Array of light-diffusing sub-grating
US8111461B2 · kind B2 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2008 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | May 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1871
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a transparent substrate comprising, on its surface, a light-diffusing array comprising at least 10 juxtaposed sub-gratings of parallel lines of features, said features being separated by domains with a refractive index differing from that of the features, each sub-grating comprising at least 20 repeated successive identical features equally spaced apart with a period p, said period varying non-monotonically from one edge of the sub-grating array to the other. This substrate redirects the light without iridescence in a daylighting application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.