Wholesale Optical Glass Transparent Coating Customize Optical Glass Fresnel Lens
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DG Optoelectronics Co., Limited
Zhenjiang, Jiangsu, China
Business Type: Manufacturer/Factory
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Fresnel lenses are lenses composed of a series of concentric rings. The Fresnel lens construction design allows for large aperture and short focal length with less mass and volume compared with a conventional lens design. Fresnel lens were invented by French physicist Augustin Jean Fresnel (1788-1827) and used in lighthouses all around the world. Since then it has been used in applications for light collection, light collimation and magnification. Today a common application that you will find a Fresnel lens in is a magnifying glass. You will likely find Fresnel lenses in detector operations, condenser systems and emitter operations. However, you can also find Fresnel lenses in devices used for illumination. While originally made of glass, the Fresnel lens can be found in a large variety of substrates and sizes. Nowadays, Fresnel lenses are made of plastic because of the lightweight traits of plastic compared to glass.
With a Fresnel lens, the conventional optical lens is replaced. This is because the Fresnel lens's contour can refractive surfaces more efficiently than a conventional optical lens.
In other words, the Fresnel lenses are designed to manipulate parallel light rays and focus them in a common area.
The three main ways that a Fresnel lens can be used are for:
• Magnification
• Light collection
• Light collimation
Even though the Fresnel lens is a lot more narrow than other types of lenses available, they can focus light a lot more efficiently than conventional optical lenses. Also, Fresnel lenses don't scatter light across surfaces. This means that most of the material used in a Fresnel lens can increase the absorption of light upon the object that's being looked at.
Due to the design of the Fresnel lens, this lens can produce individual light patterns. Fresnel lenses can have an unlimited combinations of light patterns in it's design. In today's world, Fresnel lenses are commonly used in solar applications. This is because of the lens' ability to concentrate light onto a heated surface. If you have a solar panel unit to heat your home or your pool, your solar panel system likely uses a Fresnel lens.
Fresnel lenses were initially produced by hand grinding and polishing glass. The manufacturing process was tedious and later evolved into molten glass poured into molds. In the 20th century, optics quality plastic and injection-molding were used to produce commercial applications. Fresnel lenses can be manufactured from a variety of substrate such as acrylic, polycarbonate or vinyl.
Fresnel lenses have many uses. Customers with special needs may need to order customised Fresnel lenses to get the desired results. At DG Optics, we design and manufacture high-quality precision Fresnel lenses according to unique specifications. Check out our options to build your own lenses, or request a quotation to learn how DG provides customised lenses, Fresnel lenses or other optical solutions at competitive prices. Are you looking to order a Fresnel lens for your custom optical needs? We're here to provide you with the perfect solution you need. contact us today to learn more!
Fresnel lenses have many applications. Customers with specialized needs may need to order custom fresnel lenses to get the results they require. At DG Optics, we design and manufacture high-quality precision frecnel lenses to unique specifications. See our options for building your own lens, or request a quote to see how DG could provide a custom lens, precision fresnel lens or other optical solution at a competitive price.
Any other types:
The first: milling is to remove uneven bubbles and impurities on the surface of the lens, which plays a moulding role (about 0.05-0.08).The second: fine grinding is to eliminate the damaged layer of the milled lens and fix the R value.
The third way: polishing is to polish the polished lenses again. This process is mainly to make the appearance better.
The Fourth: Cleaning is to clean the polished lens clean the polishing powder on its surface to prevent compression.
The fifth: grinding edges is to grind the original lens outer diameter to the specified outer diameter.
The Sixth: Coating is a coloured film or other film that will be coated with one or more layers of lenses that need to be coated.
The Seventh: Ink coating is a layer of black ink that will require lenses to prevent reflection from being reflected on its outer edge map.
The Eighth: Gluing is to glue two lenses with opposite R values of the same size as the outer diameter.
