Lenses impurity the control of Neutral optical glass

[Zhou Keven]

Not "Neutral optical glass" when lenses, optical lenses to be placed in a soft surface, can not die directly on the glass, metal, desktop, or on dirty paper, this lens is very easy to scratch. Production "Neutral optical glass" raw materials are oxides, hydroxides, nitrates and carbonates, and in accordance with the requirements of the formulation, introducing a phosphate or fluoride. In order to ensure transparency "Neutral optical glass" must strictly control the content of colored impurities, such as iron, chromium, copper, manganese, cobalt, and nickel.
Source:http://www.yxingoptics.com