Startup Idea : Virtual Reality Headset via mobile device

There is not enough 3D movie viewing technology. Google Cardboard is a makeshift solution and uses a mobile phone instead of having a full-fledged screen of it's own. So I would like to suggest building a headset like Oculus Rift and have it receive video and sound input from a mobile device via a microUSB cable. The mobile device supplies the power and video, while the headset simply works as a visual version of headphones. As a result you can watch movies in 3D from anywhere as the setup is completely portable.