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Scratch Resistant Coatings

Scratch resistant coatings provide lenses with durability and increased longevity. Plastic lens materials scratch easily than glass materials, and therefore benefit greatly with application of a durable hardcoat. Two of the more common types of hard coats are:

• Thermally cured dip hard coating

The lens is slowly passed through a liquid bath of a solvent based hardcoat
where the coating solution adheres to both convex and concave sides of the lens. The hardcoat is then allowed to cure in a high temperature chamber until stable.

• U.V. cured hard coating

A liquid hardcoat solution is applied to the concave side of the lens using a spinning process. Lenses are then cured under a UV (Ultra Violet) light for a specific amount of time.