Fresnel Lens 500 * 500mm, Focal Length 600mm, Large Optical Acrylic Lens, Big Solar Fresnel Lens, for Solar Concentrator, DIY Solar Heater, Solar Death Ray, Magnifying, Scientific Research Education
High light transmittance, High efficiency in focusing, Lightweight, Durable
Visual Aid for education - Great for DIY Solar Cooking, DIY Solar Heater, and DIY PROJECTION TV, For Scientific Research
Also be suitable for Solar energy collector system, start a fire under sunlight, hot water heater, solar furnace, LCD projector, Super fire starter
Tips: Wear sunglasses when using, so that the light is not too strong to damage the eyes, In the sun will burn instantly, please pay attention to safety when using
Description
Size: 500*500mm Focal length: 600mm Material: PMMA Groove pitch: 0.5mm Material : acrylic (pmma) Transmission (%): 92 (from 400-1100nm) Index of Refraction nd : 1.491 Operating Temperature (°C): 80 (Maximum)