A polycarbonate lens, often identified as PC, is a lightweight, impact-resistant plastic lens used to protect the light and help form its light pattern. Coatings may improve scratch, chemical, and UV resistance. Lens material and coating are product-specific and should be checked in the technical data. Polycarbonate can tolerate impacts that might break glass, making it useful in forestry, construction, mining, and material handling. However, untreated surfaces can scratch or weather, so protective coatings and cleaning methods matter. A lens also affects optical efficiency and distribution; replacement parts should preserve the specified material, geometry, and surface treatment.