on 10 september 2012, ttp announced that it developed an eyewear that looks like conventional glasses and uses transparent, curved lenses that do not obstruct the wearer's field of view. the technology works by using an embedded low-power, miniature projector optics to project a light at an angle of approximately 45° towards the lens that contains an embedded grating structure to redirect the light into the eye, as well as performing a number of other optical functions such as astigmatic compensation. it also invented a very high speed switchable fast focus lens technology that can be used to create a true 3d experience. the september 2012 prototype can only show a monochrome, 640 x 480 image, not a moving video, but the hardware to do that is expected to be ready for the next model. an electrode mounted at the temple of the eyewear can measure an electronic signal in the muscles to figure out which way the eyes are looking and that is translated into ui. the company is not planning to manufacture its display or eye-tracking technology, but instead hopes to license it to third parties. it is currently in negotiation with a california-based company.