2-Pack Round Fresnel Lens Diameter 400MM Focal Length 220mm acrylic lenses for solar collecting,cooking outside,solar energy fresnel lens Magnifier solar projector fire starter

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Feature

118USD for 2PCS/Unit big fresnel lenses
Size:400mm, Focal length:220mm, Thickness:3mm, Material:PMMA(acrylic)
Visual Aid for education - Great for reading small text, DIY Solar Cooking, DIY Solar Heater, and DIY PROJECTION TV, For Scientific Research
High light transmittance, High efficiency in focusing
Lightweight, Flexible, Durable

Description

Size: 400mm Focal length: 220mm Thickness: 3mm 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)

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