this invention relates to a stereoscopic image display apparatus comprises a display for combining and displaying , in an alternate array in a predetermined direction , plural stripe images divided from each of two parallax image for the left and right eyes ; a polarizing member in which stripe - shaped polarizing parts with mutually different polarizing axes are alternately arranged respectively corresponding to the divided stripe images , wherein the divided stripe images are emitted by the polarizing member with different polarization characteristics for the left and right eyes , and the left and right eyes of an observer observing said display unit are respectively given the corresponding parts of the divided plural stripe images by the difference of the polarization characteristics whereby the observer can recognize a stereoscopic image ; and an optical member provided with stripe - shaped apertures arranged in a predetermined direction , respectively corresponding to the divided stripe images .