Optical glass

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United States of America Patent

PATENT NO 9346704
APP PUB NO 20150251946A1
SERIAL NO

14433989

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Abstract

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The invention provides a kind of high-precision molding optical glass, comprising 0.1-10 wt % of SiO2, 9-20 wt % of B2O3, 20-35 wt % of La2O3, 1-8 wt % of ZrO2, 5-20 wt % of ZnO, 1-10 wt % of Ta2O5, 5-15 wt % of Gd2O3, 0-2 wt % of TiO2, 1-10 wt % of Y2O3, 1-12 wt % of WO3, 0-3 wt % of Li2O and 0-1 wt % of Sb2O3. The optical glass provided in the invention features density less than 5.0 g/cm3, refractive index between 1.80 and 1.85, Abbe number between 40 and 45, transition temperature lower than 600° C., wavelength λ80 corresponding to the transmissivity of 80% below 415 nm, and upper limit of devitrification temperature below 1110° C., and is applicable to high-precision molding.

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Patent Owner(s)

Patent OwnerAddress
CDGM GLASS CO LTD610100 CHENGDU LONGQUANYI DISTRICT SICHUAN PROVINCE NO 359 SECTION 3 OF CHENGLONG AVENUE CHENGDU CITY SICHUAN PROVINCE 610100

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuang, Bo Sichuan, CN 25 34

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