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Fresnel Lens are Closely Related to Our Lives

Fresnel Lens are Closely Related to Our Lives

The main application areas of Fresnel lens at the present stage include projection and solar photovoltaic fields. Because the edge of the light emitted by the Fresnel lens is softer, it is often used in dyeing lamps. Place a colored plastic film on the bracket in front of the lens to dye the light, or place a metal gauze or frosted plastic to diffuse the light.


Many devices containing Fresnel lens allow the lamp to move forward and backward to the focal point to achieve the effect of magnifying or reducing the size of the beam. It is very suitable for use on lens projectors, rear projection TVs, slide projectors and collimators, not only because the brightness of the light through it is higher than that of the ordinary lens, but also because the brightness of the whole beam of light through it is relatively consistent in all parts.


In the field of solar photovoltaic, Fresnel lens, as a concentrating component in the concentrating photovoltaic system, converts light from a large area into a small one.


Inexpensive Fresnel lenses are generally made of transparent plastic with die-casting or molded methods, and their sizes can be made larger, lighter and more economical than glass. Therefore, large-scale Fresnel lenses are also widely used in solar cookers or solar water heater. In addition, Fresnel lenses are also widely used in car headlights, car taillights and reversing lights. It can make the parallel light reflected by the concave mirror of the headlight tilt downward. Therefore, Fresnel lens are also used to correct some visual obstacles, such as squint.

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