Patent ID: 9210412
Filing Date: 2015-12-08
Classification: G02B,G02F,H04N

Abstract:
1. Active shutter glasses for a stereoscopic image projection system, the active shutter glasses comprising: a shutter section for the right eye and a shutter section for the left eye; the shutter section for the right eye and the shutter section for the left eye each comprising a liquid crystal cell; wherein when the glasses are worn, viewing angles of the shutter section for the right eye and the shutter section for the left eye each are wider on right and left sides than on an upper and a lower side; wherein when light leakage of the shutter section for the right eye and the shutter section for the left eye in a light-shielded state is measured at a predetermined polar angle, the amount of light leakage at a 0° azimuth and a 180° azimuth is smaller than an average amount of light leakage at four or more azimuths, and the four or more azimuths are arranged uniformly among all azimuths.