Detailed Product Description 1. Raw material: plastic material2. Processing: by pressing3. Surface quality: optical surface quality and ... bubble and dirts, 5. Function: Guide of the light beams e.g. Fresnel lens, Plano lens, Bi convex lens, Bi ... ,magnifying lens6. Application: Lighting system, Electronics, Electrical apparatus, Industries, e.g. Lamp cover, Lamp shade, Stage lens, LED lens, Reflector ...