Optical diffuser with UV blocking coating using inorganic materials for blocking UV
US7446939B2 · kind B2 · utility
6Cited by
39References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2006 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Nov 14, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2218/365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffuser is provided in an illumination system, where the diffuser is capable of blocking significant amounts of ultraviolet (UV) radiation. In certain example embodiments, the diffuser includes a glass substrate which supports a UV coating(s) that blocks significant amounts of UV radiation thereby reducing the amount of UV radiation which can make its way through the diffuser. In certain example embodiments, the coating may include inorganic particulate in a fit matrix so that the coating may both diffuse visible light and perform UV blocking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.