The difference between resin sheet and glass sheet
Anti Dent: generally hot, small volume of material easy to cause dents and spots in the glass, but if it touches the resin lens, it will automatically open, and will not cause any traces on the surface of the lens.7. resin mirror surface reflection than ordinary glass piece is low, also less dazzling.8. resin double lens does not have chromatic aberration, this is because the resin double optical lens is the whole structure, therefore, the fused glass double lens has less chromatic aberration.9. resin lens transmittance is as high as 92%, more than 2% higher than ordinary glass.10. resin lenses resist a wide range of chemicals and solvents, and almost all household solvents and chemicals do not affect or impair it.
Shortcoming:1., easy to scratch: resin lens resistance to scratch than glass lenses, but can be improved by surface hardening, but the effect is limited.2. thickness than the glass lenses: beauty is human nature, thick lenses are very unsightly, depth myopia is more regarded as a dangerous road. Although it has improved greatly recently, it is still much thicker than glass lenses.The 3. frame is easy to produce deformation: This is due to the plastic lenses because of their low density than the glass lenses.4., not high temperature: Although the resin is thermosetting material, but once coated with multilayer film, then the surface of multilayer film may be caused by high temperature cracks.
Advantage：1. light weight.2. is not easy to break: if the lens is broken, not only fragments less, and less sharp, can make the eye and facial injuries to a minimum, this is the market marked "safe lenses" the main reason.3., it can be dyed: the resin lens is easy to dye, and can be appropriately matched with the clothes and fashion.4. can block ultraviolet rays: almost completely block ultraviolet wavelengths below 350mm, the effect is far better than glass lenses.5., strong anti fogging: because of the thermal conductivity of resin lens is lower than glass, it is difficult to produce vague and unknown phenomena due to steam and hot water, even if it is blurred, it will soon fade.
