roller blind 
noun
A window blind fitted on a roller.To keep the room looking modern, she suggests fuss-free window treatments with a blackout lining or neat options such as a roller blind, Roman blind or wooden shutters....
- Whether you use Roman, wooden Venetian style or even a voile roller blind to defuse the light off your computer screen, there will always be a perfect solution to allow as much or as little light into your room as you require.
- Another dashboard button unfurls and retracts a black roller blind across the roof glass.