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Posted: June 13, 2007
Large-scale production technology of anti-reflective lens using nanoparticles
(Nanowerk News) Researchers at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan have successfully developed a mass production technology of nanostructure embossed anti-reflective lens by using metallic nanoparticles in collaboration with Ito Optical Industrial Co., Ltd. and Tokai Seimitsu Kogyo Co.,Ltd.
This new manufacturing technique of the anti-reflective lenses uses nanostructured dies which are made by an etching method using the nanoparticles as a mask, formed by a vacuum process. The new process also makes possible nanostructure whith anti-reflective property even if the die surface is complex-shaped. The die which is made with this technology can be used in injection molding, allowing mass-production of high-performance lenses.
As the conventional multilayered membrane coating process, necessary for providing anti-reflective properties to the lens, can be avoided, further reduction of unit price per lens is expected by this process. This new technology could lead to higher lens performance with small radius of curvature etc, which was not possible with current processes. Most likely applications are in cnosumer gadgets such as compact cameras or camera phones.