Optical glass, press-molding glass material, and optical element and method of the same

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United States of America Patent

PATENT NO 8883664
SERIAL NO

13449848

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Abstract

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An aspect of the present invention relates to optical glass, which is oxide glass comprising various cationic components in prescribed amounts without Pb, with a refractive index nd of 1.750 to 1.850, an Abbé number νd of 29.0 to 40.0, and a glass transition temperature of less than 630° C.

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Patent Owner(s)

  • HOYA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Negishi, Tomoaki Shinjuku-ku, JP 21 166

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