Hydrophobic coatings seal lens surfaces with an ultra-smooth polymer, making it easy to clean the eyeglass lenses from dirt, water or oily contamination can simply be wiped off.
加硬防水膜在镜片表面封上一层非常致密平滑的聚合物，使得镜片表面灰尘、水及油污清洁异常方便。
2
The observation lens is the single-tube visual lens, eyeglass is made of a concave lens, and the inner part of a lens tube is provided with a visual distance increasing device.