Kgs. Lyngby, Denmark
- Type
- 25
- Procedure
- neg-wo-call
- Ref. number
- 165095-2025
- Estimated value
- 77,296 EUR
- CPV
- 03212211
DTU intends to order 4 custom optical lenses for an astronomical camera. It is a custom optical design optimized for the use in the 2ES spectrograph. The lenses have a diameter of 210m, 244mm, 186mm and 216mm respectivel…
y. The involved glass types are Fused silica, S-FPL51 and BAL15Y. Two of the lenses are doublets that need to be cemented using Sylgard 184 optical bond. All lenses need an anti-reflection coating with the specifications Rmax <2% between 370nm-440nm, Ravg <0.5 from 440nm-890nm and Rmax <1% from 890-
915nm. Because of the size of the lenses, two lenses have to be glued together and finally the coating is very complex, and therefore DTU consider Optik-plus to be the only company, who are able to fulfil this and therefore DTU intend to pl