At an event in Tel Avic, Bruce Harris from Microsoft spoke about Hololens. He spoke about its capabilities, battery life, narrow field of view and more.
Regarding the field of view, he said that you should think it is as 15-inch monitor few feet away from your body in air. He said there is a reason why it is limited. Manufacturing the glass on which the Holograms are projected is a complex process. If you want manufacture a larger glass for better field of view, the failure rate goes up high and so the cost will go up significantly. For now HoloLens costs $3000, it may cost several thousand dollars more if larger glass needs to be included. Another reason Microsoft didn’t opt for larger field of view is battery life. When you want to project more, battery goes down exponentially. Microsoft even tried it and with the current battery capability, HoloLens can run only for 20 mins. But in future, when manufacturing cost comes down and battery life gets improved, we may get Field of View in HoloLens.
Video via WalkingCat