Multilayer anti-reflection coating using zinc oxide to provide ultraviolet blocking
US5147125A · kind A · utility
78Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Aug 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/115
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A multilayer, thin-film, broad-band, anti-reflection structure applicable to transparent substrates. The present invention makes use of the UV absorption properties of zinc oxide to provide UV rejection for wavelengths shorter than 380 nm, while providing anti-reflection properties in the visible region of the spectrum. The structure provides a reflection value less than 0.25% in the visible region of the spectrum, and blocks 99 percent of UV radiation below 380 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.