| 摘要 |
Optical glass constituted by an amorphous matrix and crystal grains dispersed in the amorphous matrix, wherein the amorphous matrix comprises a first oxide of at least one of silicon oxide and phosphor oxide and a second oxide of at least one of titanium oxide and zirconium oxide, and wherein the crystal grains is at least one of titanium oxide, zirconium oxide and silicon, an average grain size of the titanium oxide grain being 3 nm to 20 nm, and the average grain size of the silicon crystal being 3 nm to 8 nm.
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