Optical glass, precision press molding preform, and optical element and method of manufacturing the same

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United States of America Patent

PATENT NO 9255028
APP PUB NO 20150119228A1
SERIAL NO

14397326

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Abstract

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The optical glass is described that may be an oxide glass including, denoted as cation %, a total of 5 to 60% of B3+ and Si4+ (with 5 to 50% of B3+), a total of equal to or higher than 5% of Zn2+ and Mg2+, a total of 10 to 50% of La3+, Gd3+, Y3+, and Yb3+, and a total of 6 to 45% of Ti4+, Nb5+, Ta5+, W6+, and Bi3+ (a total content of Ti4+ and Ta5+ being higher than 0% and a content of W6+ being higher than 5%).

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Patent Owner(s)

  • HOYA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiwara, Yasuhiro Mitaka, JP 99 683
Negishi, Tomoaki Hino, JP 21 177

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