While some may say that price isn't the main factor that's been holding HMDs back from mass acceptance, France's Optinvent (a spin-off of Thomson S.A.) is apparently of that opinion, and it's now promising to deliver a full-fledged HMD for less than $200 by the end of next year. In addition to their trend-setting good looks (to be further refined in the final version), the company's so-called Clear Vu goggles make use of a reflection system that displays images in the wearer's field of vision rather than completely obstructing it, which the company says opens to the door a whole host of augmented reali