Description of Ultrathin Magnifier Experiment Concentrator Education
2PCS/Unit large fresnel lenses. Size:Φ120mm, Focal length:220mm, Thickness:2mm, Material: PMMA (Acrylic). Visual Aid for education - Great for solar heating experiment, DIY Solar Cooking, DIY Solar Heater, For Scientific Research. High light transmittance, High efficiency in focusing, High precision. We are professional factory for high-precision optical lens, fresnel lens, solar lenes.