An image display adapted to provide a 3D image is provided. The image display includes an image displaying module, an image dividing unit, and a plurality of micro-optical structures. The image displaying module is adapted to emit a light beam including a left eye beam and a right eye beam, and the image displaying module has a displaying area. The image dividing unit is disposed on the transmission path of the light beam for dividing the left eye beam and the right eye beam from each other. The micro-optical structures are dispersed and disposed on part of the transmission path of the light beam, wherein a ratio calculated by dividing a projection area of the micro-optical structures orthogonally projected on the displaying area by the displaying area ranges from 5% to 85%.