Fresnel Lens Magnifier, Diameter 200mm (7.9''), Focal Length 200mm, Acrylic Lens (not Glass), for Physics Classroom, Solar Heating, Magnifiying, Fire Starter. (Focal Length 200mm)

Features

• 1-Pack Round Fresnel Lens Magnifier
• Size:Φ200mm, Thickness:2mm, Material: PMMA (Acrylic)
• High Light Transmittance, High Efficiency in Focusing, High Precision.
• Great for Physics Classroom Education, Solar Heating Experiment, DIY Solar Project, Magnifying, Scientific Research
• Optical education: The special structure of the Fresnel lens can adjust the parallel light or the focused light, so that the light is effectively directed to a specific narrow area to achieve the focusing effect of light. The children were curious about it.This is not only a base, but also a knowledge point that children need to learn.
• Six Seasons is a Professional Manufacturer of Fresnel Lens and Optical Lens, If you have size customization needs, welcome to leave a message to us
• Tips: Wear sunglasses when using, so that the light is not too strong to damage the eyes