The hottest 3D printing glass lens is comparable t

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3D printed glass lenses are comparable to commercial products

according to a short cut organized by physicists, researchers at Lawrence Livermore National Laboratory in the United States have successfully manufactured glass lenses with excellent optical performance for the first time with the help of 3D printing technology and self-developed "ink", which can be comparable to existing commercial products on the market. The research was published in the latest issue of advanced materials technology

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the researchers explained that since the refractive index of glass is quite sensitive to its thermal history, it is difficult to ensure that the glass printed from the molten state has the desired optical properties. In the new research, they change the independently developed material into a paste form, and then heat the entire print to form glass, so that the obtained product has a uniform refractive index, while eliminating the optical distortion that will reduce the function of the lens

the chief researcher of the project is realized through this kind of real use feedback researcher, Lawrence Livermore National Laboratory h) process: the experimental process, measurement, display and analysis are all completed by microcomputer; "The new method enables us to obtain the homogeneity of the optical index required by the lens. In addition, using customized inks that can form silica and silica titanium dioxide lenses, researchers can adjust the optical, thermal and mechanical properties of the lenses, such as long service life without protection," said Rebecca dais Pierce, a scientific engineer

in the new research, they printed out small pieces of lenses with simple shape for concept verification. However, dais Pierce said that this technology can eventually be used to manufacture glass lenses for any equipment. These optical elements also have geometric structures and compositions that cannot be made by traditional methods. For example, the GRIN lens can be polished into a plane, replacing the more expensive polishing technology used in the traditional curved lens

dais Pierce said: "3D printing enables us to combine optical materials in an unprecedented way. It opens up a new design space that did not exist in the past, making materials have new optical shapes and optical properties."

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