US Patent 10274730 Display with an embedded eye tracker

A display device includes a two-dimensional array of tiles. Each tile includes a two-dimensional array of pixels and a lens of a two-dimensional array of lenses. Each pixel is configured to output light so that the two-dimensional array of pixels outputs a respective pattern of light. Each lens is configured to direct at least a portion of the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user. The display device also includes an array of sensors for determining a location of the pupil of the eye of the user.