Changchun yutai optics Supply optical windows.Windows are optical glass with ground and polished faces that are relatively parallel. And there is almost no effect on visible light,to coat on the surface of windows could increase the transmittance,the commonly used coatings are antireflection coating (AR) and scratch-resistant coating(AS).Windows with coating can enhance the light penetration strength,and own function of waterproof ,dustproof,and scratch-proof. Optical windows are processed by Changchun Yutai Optics with great quality and low price. They are mainly used in mobile phone screen and lens protection,digital camera, digital video recorders, industrial optical windows, touch screen products, GPS products, digital electronic products windows, car rearview mirror, computer screen, laptop screen, watch surface and so on.