To display 3-D images stored in computer, cylindrical holographic stereograms with white light illumination (CHS) is useful because of both one step synthesis and wide viewing angle in the horizontal direction. But it has been difficult to make the vertical size of reconstructed images larger than 20 cm, because conventional optical system for synthesizing CHS requires a high-power cylindrical lens larger than the size of the reconstructed images 1 We show a new anamorphic optical system, which enlarges the size of images reconstructed from CHS.