Optical glass and method for producing the same
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United States of America Patent
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Dec 5, 2017
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Sep 26, 2014
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Sep 30, 2013
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Abstract
An optical glass may be a phosphate based glass containing at least any one of oxides selected from TiO2, Nb2O5, WO3, and Bi2O2. The total content (HR) of the TiO2, Nb2O5, WO3, and Bi2O2 may be 35 mol % or above, the noble metal content may be less than 2.0 ppm, and the βOH value, given by the following general formula, may be 0.1 mm-1 or above: βOH=−[ln(B/A)]/t.
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