70mm Optical PMMA Fresnel Lens, 30-80mm Focal Length, Solar Concentrator & Magnifier(50mm)

High-efficiency optical PMMA material delivers 92% light transmittance, ensuring bright and clear focusing for solar concentration or magnification tasks. Versatile focal length options (30mm to 80mm) let you adjust the distance to suit different setups, from solar collectors to flashlight or stage lamp applications. Ultra-thin 2mm profile with a 70mm diameter makes it lightweight and easy to integrate into DIY frames, holders, or optical assemblies without added bulk. Provides 3x magnification for reading, inspection, or small-object viewing, while maintaining a smooth, durable surface resistant to scratches and yellowing. Compatible with standard flashlight lenses, solar cooker panels, and stage lighting fixtures—ideal for hobbyists, educators, and makers building custom optical systems.