PMMA Magnifier

Fresnel magnifying glass, this is an ultra-thin magnifying glass. Made of clear Plexiglas (of course more materials can be used). The minimum thickness of a Fresnel magnifying glass made of PVC can be between 0.45mm~0.90mm. Unlike ordinary magnifying glasses, its surface is covered with tiny stripes, and its swirling stripes contain many convex lenses ( Referred to as a donut), the light passing through it bends to produce a diffraction phenomenon, thereby forming a magnified image.