Abstract
The present invention relates to an optical window for transmission of electromagnetic radiation, the optical window comprising a substrate having a first and a second surface, wherein microstructures cover at least part of one of said surfaces, said microstructures being dimensioned and arranged so as to provide a predetermined transmittance at a predetermined wavelength or wavelength span in the infrared range, and wherein nanostructures cover at least part of the microstructures so as to provide a self-cleaning surface.
| Original language | English |
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| IPC | G02B 27/ 00 A I |
| Patent number | WO2016026983 |
| Filing date | 22/08/2014 |
| Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
| Priority date | 22/08/2014 |
| Priority number | EP20140181980 |
| Publication status | Published - 25 Feb 2016 |