Fresnel Lens w/25 Frames Full Page Magnifying Sheet

 

This lens contains one large magnifier (75 x 175mm) and 25 wide angle lenses. Look or photograph through Multi Image Fresnel Lens for 25 wonderful images. Apply Multi-image Lens on glass anywhere – display windows, shower doors, fish tank and mirrors for spectacular decorative effects. It can be easily cut by scissors.

Fresnel lens is a type of lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses. The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. Compared to conventional bulky lenses, the Fresnel lens is much thinner, larger, and flatter and captures more oblique light from a light source, thus allowing lighthouses to be visible over much greater distances. A Fresnel lens can be made as large as desired without making it thicker due to concentric rings placed on the flat surface. Magnify objects or concentrate solar power to a fine point. This is a great tool for reading small type or magnifying small flora.

• Whole sheet measures approximately 9.75 x 7 inches (175mmx245mm),
• Material: optical PVC,
• 0.4mm thick,
• Focal Length: -40mm (wide angle lens) and 300mm (magnifier),
• Protective Case: No,
• 2X large magnifier measures approximately 3 x 7 inches (75mmx175mm) field,
• The Multi-image fresnel area measures approximately 6.5 x 7 inches (165mmx175mm) area and contains 25 square wide angle lenses each measuring approximately 1.25 inch (33mm).