In a very recent exhibition of new technologies and inventions that I visited, I was able to see a similar type of this heads up display, and it is amazing to see how it works. It is amazing to see such an ordinary looking object, the spectacles or eyeglasses that could have high quality display. I believe that this has revolutionized the way we consume information and deliver information and if I am not mistaken, that this is currently used in the military or security operations. In fact, it is even featured in some movies, like Mission Impossible, and the like, if I am not mistaken. It was rather unfortunate that the exhibitors have kept the preview short, as I would have liked to try it on.
Eyeglass trade companies are providing wide diversity of, designs that are inspired by fashion tendencies of current times. But they need use latest technology like HMD, MicroOptical Corp etc to manufacture quality lances.