PMMA Round Fresnel Lens 40-100mm, Focal Length 60-80mm, Solar Concentrator Capacitor for DIY Optics, 1 Piece (50mmx80mm)

The precision-molded PMMA acrylic lens provides 92% light transmission for efficient sun concentration and bright, clear image for optical projects. Available in diameters from 40mm to 100mm with a focal length range of 60-80mm and offers flexible options for custom setups, prototyping or educational use. The lightweight and durable 2mm thick device can withstand temperatures from -40°C to +80°C, making it suitable for both indoor experiments and outdoor solar applications. The fine thread pitch of 0.3 mm (0.5 mm for the 100 mm/120 mm focal length version) ensures even, even light refraction, ideal for condenser systems, magnifiers or projection devices. Each package includes a lens that can be used immediately for DIY solar stoves, machine collimators or demonstrations at science fairs - no additional mounting hardware is required.