PVC Magnifier Fresnel lens , magnification 2

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$1.69
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Features:

Model No.: MFL90-70
Size(mm): 70*70
Magnification: 2
Material: PVC
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The Fresnel magnifying glass is an ultra-thin magnifying glass. Fresnel magnifying made of PVC,the minimum thickness can be between 0.45~0.90mm.Unlike ordinary magnifiers,its surface is covered with tiny stripes,and it contains many convex lenes in its spiral stripes.Referring to the ring shape, the light passing through it is curved to produce a diffraction phenomenon,there by forming an enlarged image.
Finel magnifying glass achieves the effect effect that ordinary lenses do not achieve.so it is widely used for reading and reading newspapers for the elderly.

 

 





 

 

Model No.:
MFL90-70
Size(mm):
70*70
Magnification:
2
Material:
PVC