Mary Lou Jepsen is inventing the future of seeing inside your head. — Mary Lou Jepsen was an executive at Oculus, led “moonshots” at Google, founded the low-power computer display company Pixel Qi, and co-founded One Laptop Per Child. But the company she launched last year, Openwater, is her most ambitious project yet. The plan is to use optoelectronics and LCDs to create…