Feature●1PCS-Pack 300x300mm Fresnel Lens●Focal Length:300mm, Thickness:2mm, Material: PMMA (Acrylic)●High Light Transmittance, High Efficiency in Focusing, High Precision.●Great for Physics Classroom Education, Solar Heating Experiment, DIY Solar Project, Magnifying, Scientific Research●Six Seasons is a Professional Manufacturer of Fresnel Lens and Optical LensDescription
Size: 300x300mm, Focal Length: 300mm, Thickness: 2mm Material: PMMA (acrylic), Transmission (%): 92 (from 400-1100nm), Index of Refraction nd : 1.491 Operating Temperature (°C): 80 (Maximum)