Description
- We have 2 types:Normal type and Coated type.They are made of same material ,the difference is the coating.
- Normal type:It is easy to get get oxidation fungus .
- Coated type:We do the AR coating and Protection coating on both sides.The coating can stop the oxidation efficiently,so the filter can be used for longer time.
- Besides,the AR coating can increase the transmission rate and decrease the reflective light.Protection coating can prevent the scractches and corroding.