5-Pack Fresnel Lens Φ40mm(1.57") Focal Length 40mm Acrylic Lens (not Glass) for Classroom Visual Education, Equipment Lens, Solar Project (Focal Length 40mm)
5-Pack Fresnel Lens Φ40mm(1.57") Focal Length 40mm Acrylic Lens (not Glass) for Classroom Visual Education, Equipment Lens, Solar Project (Focal Length 40mm)
Fresnel lenses are most used in solar concentration, solar heating and light gathering applications. Or cooking outside as a fire starter. Fresnel lenses can also be used as projection lenses or magnifiers. They are great for magnifying print in books, magazines, maps, telephone numbers, recipes, etc. They are great as a gift or toy to childrens who need visual aid.
Product Features
- Diameter 40mm(1.57") with different focal length
- Thickness: 2mm, Material: PMMA(acrylic)
- Great for Visual Aid education, Solar heating experiment, DIY Solar concentrator, Scientific Research, Magnifying.
- High light transmittance, High efficiency in focusing, High precision.
- We are professional maker for high-precision fresnel lenses