Polarized 3d glasses include linear polarized 3d glasses, and circular polarized 3d glasses.
Linear polarized 3d glasses always be used in 3D cinema, like Imax 3D cinema system.
Angle(or degree): 45/135, 0/90, 135/45, total 3 angle(or degree)
Linear polarized lens: 0.23mm thin lens, 0.72mm thicken lens.
0.23mm thin lens always match ABS plastic frame, or paper frame.
0.72mm thicken lens always match PC plastic frame.
0.72mm with hard coat both side, anti scratch, Anti UV.