1 x brand new Fresnel lense

More available to the wining bidder at the winning bid price.

Details of the specially imported lense you will receive are:

180mm x 260mm (7"x10")
Thickness: 0.4mm
Weight: 26 grams
Material: optical PVC
Groove pitch: 0.3mm
Focal length: 300mm
Magnification: 3x

Fresnel lenses were first used in lighthouses as it was the most efficient way to capture and direct light.
Tests showed that while an open flame lost nearly 97% of its light, and a flame with reflectors behind it still lost 83% of its light, the fresnel lens was able to capture all but 17% of its light. Because of its amazing efficiency with just a 1000 watt bulb, a first-order Fresnel lens can generate a 680,000 candlepower beam visible up to 21 miles out to sea if set high enough

The applications for Fresnel lenses include lighting, fresnel lamp, lighthouse, overhead projector, Fresnel magnifier, Fresnel TV projection, condenser system, camera fresnel spotlight, automobile headlight, fresnel lens solar energy, rear projection Fresnel screen, passive motion detector, traffic sign, fresnel solar concentrator, collimator, fresnel flight simulator, optical landing system and LED magnifier Solar energy collector system, start a fire under sunlight, hot water heater, solar furnace, LCD projector, computer screen magnifier, virtual reality game flight simulator, computer simulation game, TV magnifier