A new naked eyes stereoscopic display optical system for multi-users was proposed in this paper, different from the
conventional naked eyes stereoscopic display monitors with sophistication technology and bad uniformity of
illumination. According to the binocular parallax technology, Fresnel lens and polaroid sheet were chosen to focus the
rays on the observers' eyes. Freeform lens were used in this system to enhance illumination uniformity of pictures and
efficiency of the system. The results of simulation showed that the users can obtain stereoscopic effect at their each
places, uniformity of illumination on LCD was above 0.6. Therefore, this system had a simple and compact structure,
and the quality of pictures users obtain was better than system without freeform lenses.