You need Blindsaver Blackout Shades. Here's a link:
http://www.blindsaver.com/Blackout-Shades/f.dol

Block that Light

Some experts suggest that sleeping in total darkness not only helps you to feel more refreshed and energetic during the day, but that it might even help to boost your immune system. In addition, blackout blinds and shades are an excellent addition to a home theater room.

Block as much light as possible.
Perfect for bedrooms and media rooms
Maximum privacy from the outside