5-Pack Round Fresnel Lens Diameter 50mm(1.97") Focal Length 40mm(1.57") Acrylic Lens (not Glass) for Physics Classroom, Visual Education,Solar Concentrator
5-Pack Round Fresnel Lens Diameter 50mm(1.97") Focal Length 40mm(1.57") Acrylic Lens (not Glass) for Physics Classroom, Visual Education,Solar Concentrator
Size: Φ50mm Focal length: 40mm Thickness: 2mm Material: PMMA Groove pitch: 0.5mm Transmission (%): 92 (from 400-1100nm) Index of Refraction nd : 1.491 Operating Temperature (°C): 80 (Maximum)
Product Features
- 5PCS/Pack fresnel lenses
- Size:50mm, Focal length:40mm, Thickness:2mm, Material:PMMA(acrylic)
- Great for Visual Aid for education, solar heating experiment, Solar Cooking, DIY Solar Heater, For Scientific Research
- High light transmittance, High efficiency in focusing, High precision.
- We are professional maker for high-precision fresnel lens