5-Pack Fresnel Lens Φ80mm(3.15) Focal Length 60mm Optical Fresnel Magnifying for Solar Projects,Equipment Lens,Visual Education (Focal Length 60mm)

Diameter 80mm(3.15) with focal length 60mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

5-Pack Fresnel Lens Φ20mm(0.79) Focal Length 10mm(0.39) Acrylic

Fresnel Solar Concentrator Optical Acrylic Lens With 4 Array For

Quality optical pmma with free worldwide shipping. The lens is made of high quality optical pmma glass, which is resistant to high temperature.

Large Optical PMMA Plastic Solar Fresnel Lens Focal Length Big Solar Concentrator Magnifying Glass Lenses Make Fire Tools

Fresnel Solar Concentrator Optical Acrylic Lens With 4 Array For

545mm x 325mm Crystal Clear Spot Fresnel Lens for Solar Projects

5PCS/Pack fresnel lenses Size:Φ50mm, Focal length:40mm, Thickness:2mm, Material:PMMA(acrylic) Great for Visual Aid for education, solar heating

5-Pack Round Fresnel Lens Diameter 50mm(1.97) Focal Length 40mm(1.57) Acrylic Lens (not Glass) for Physics Classroom, Visual Education,Solar

Fresnel Lenses, Handheld Magnification: Educational Innovations, Inc.

Fresnel Lenses, Handheld Magnification: Educational Innovations, Inc.

Fresnel Solar Concentrator Optical Acrylic Lens With 4 Array For

800mm Round / Square Optical PMMA Fresnel Lens Solar Condensor

8.3 x 11.75 LARGE 3X Fresnel Lens FULL PAGE