Polycarbonate is usually used when impact strength or fire retardance is required. These filters are made from proprietary sheet material and normally coated with a hard coat to give abrasion and solvent resistance.
There are only a few standard tints available for polycarbonate, but others can be produced when necessary, in relatively small volumes. We have several techniques available to enable the production of polycarbonate contrast enhancement filters.
Properties of the polycarbonate will depend on the selected grade.
Glass Filters.
Glass filters can be produced plane, matt etched or with multilayer AR coating. These filters can also be toughened when required. Laminations can be built to include all fi ltering characteristics already mentioned.
Available Coatings For Acrylic and Polycarbonate
A range of optical coatings are available for the surfaces of acrylic and polycarbonate filters. Coatings can offer a selection of the following characteristics ;
- Abrasion resistance
- Solvent resistance
- Anti – glare ( matt coating )
- Anti – mist
- Anti – Newton ring
- Multi – layer anti – refl ective ( limited to a small range of product )
