This paper propose a 100-inch lenticular autostereoscopic display system. In this system, multiple viewers can simultaneously observe their own images on the same screen at the same time with motion parallax according to their eye positions. Viewable areas of this system are extended by introducing eye position tracking that uses an infrared illuminated stereo measurement method. In this paper, principle of the proposed system are explained and design procedure of the lenticular screen for multiple viewers considering the spatial resolution, the side robe width, thickness of the substrate of the screen which is concerning to the focal length, are discussed. Then experimental prototype of the proposed system were shown. Finally, the width of the viewable area and the cross talk between images for the left eye and the right eye are evaluated and the head position tracking performance are estimated.