30x20cm 0/90 Adhesive Linear Polarized Film Sheet Light Transmission Polarizer Filters Polarizing Film for LCD 3DVR Lens Optical Polarization Film for Educational Physics Photography LightingFeatures:contrast linear polarizer transmittance of unpolarized light from 380 to 700nm.Make the study of light and color fun and memorable.for Ideal for a variety of imaging applications, experiments involving birefringence, light scattering, and more.Widely used in photography settings, science projects, and studying physics.Specifications:TAC+PVASize: Approx. 30x20cm/11.81x7.87 inchOptical Type: contrast transmissiveTransmittance: single(42%) ; crossed(≦0.005%)Color: neutral grayPolarizing Efficiency: 99.99%Film Thickness: 150mPolarization