We developed a volumetric display that uses a rotating prism sheet as an optical scanner. A cross-sectional image of a three-dimensional (3D) object was moved laterally by the rotating prism sheet. A stack of the cross-sectional images constructed a 3D volume image that satisfies all requirements of stereoscopic vision. Since the mechanical load of the proposed scanning method was small, it is easy to enlarge the effective area of the scanner and its scanning area. We used a concave mirror to collimate rays emitted from each point to reduce the aberration caused at the prism sheet. A displayed 3D image had a size of $7\hspace{0.17em}\hspace{0.17em}\mathrm{cm}\times 5\hspace{0.17em}\hspace{0.17em}\mathrm{cm}\times 7\hspace{0.17em}\hspace{0.17em}\mathrm{cm}$ and a resolution of $1024\times 768\times 200$ voxels.