... /Masterimage systemsLens material: Imported 0.22-0.275mm thickness circular polarized lensOptical parameter: Polarized efficiency above 99.99%, single ... 3D cinema, showroom, science museum, entertainment center with circular polarized video display system.2. Used in 3D TV, displayer, game machine, ... 6 years.Also,we have this model for kids size.Our other type 3D glasses you may interest in: ...