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What is the difference between traditional optical lens and Fresnel lens
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What is the difference between traditional optical lens and Fresnel lens

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[Abstract]:
The traditional lens is thicker and smaller, while the Fresnel lens is thin and large.
 
Fresnel lens principle is invented by French physicist Augustin Fresnel. It transforms spherical and aspheric lens into thin plane shape lens, and achieves the same optical effect. Through ultra precision processing, a large number of optical grade annular belts are processed on the plane surface, and each ring plays an independent lens role. Fresnel lens is the best way to realize large-scale, flat and thin lens.
The manufacture of Fresnel lens, especially large size lens, involves optical design simulation, ultra precision manufacturing technology, polymer materials and precision molding technology. Fresnel lens can be widely used in lighting, navigation, scientific research and so on.
 
 
 
Fresnel lens is a flat plate shape, which can reflect and gather rays. Using this principle and splicing technology, we can convert any aperture parabolic, ellipsoid, high-order curved optical lens into plane shape, so as to realize any size splicing Fresnel lens, and explore the application in space solar energy, giant reflector (such as Guizhou Tianyan 500m aperture radio telescope).
 
The infinite splicing technology of Fresnel lens can be used from several meters, to hundreds of meters, to any large size. The parabolic reflector in Guizhou Tianyan with a diameter of 500 meters can use this splicing technology to simulate the paraboloid with a planar Fresnel lens, which can reduce the processing difficulty and is easier to install and adjust.