It looks like its designed to work with any type of lens, some of the pics at http://www.google.com/glass/start/what-it-does/ http://www.google.com/glass/start/

It looks like its designed to work with any type of lens, some of the pics at http://www.google.com/glass/start/what-it-does/ http://www.google.com/glass/start/what-it-does/ show it without any lenses at all. Its kind of like a projector that beams onto whatever lens is used, I think.