stylish metal 3d glasses

product name:stylish metal3D glasses1, product structure:metal frame, 0.26mm TAC polarized lens2,the frame style are on customer's choice(but 4 base or less is better)3,our glasses are all meet European, and American standard4,polarizing efficiency:99.9% transmittance:43%5, used for 3d moive, 3d TVproduct name: stylish metal 3d glassesModel /MOQ600pairpriceaccording to the lensdelivery date30-45 dayspayment termT/T,western union,paypal.how does circular polarized work: CIRCULAR POLARIZATIONTo present a stereoscopic motion picture, two images are projected superimposed onto the same screen through circular polarizing filters of opposite direction. The viewer wears low-cost eyeglasses which contain a pair of analyzing filters (circular polarizers mounted in reverse). Light that is left-circularly polarized is extinguished by the right-handed analyzer; while right-circularly polarized light is extinguished by the left-handed analyzer. The result is similar to that of steroscopic viewing using linearly polarized glasses; except the viewer can tilt his head and still maintain left/right separation. Many cinema systems today use electronically driven circular polarizers that alternate between left- and right- rotation directions, and does so in sync with the left or right image being displayed by the (digital) movie projector.