OPTICAL GLASS AND OPTICAL ELEMENT

Title:

OPTICAL GLASS AND OPTICAL ELEMENT

Document Type and Number:

WIPO Patent Application WO/2015/109969

Kind Code:

A1

Abstract:

An optical glass having a low transition temperature, high transmissivity, and good chemical stability and devitrification resistance, the refractive index of the optical glass being 1.60-1.65, and the Abbe number thereof being 62-66; the optical glass comprises the following components by weight percentage: P2O5: 30%-50%, BaO: 35%-50%, B2O3: 2%-6%, La2O3: 0%-5%, Gd2O3: 0%-5%, Al2O3: 0.1%-5%, Li2O: 0.1%-5%, MgO: 2%-10%, and CaO: 2%-10%. The present invention utilizes P2O5 as the network former of the glass, increasing the transmissivity of the glass; in addition, a large amount of BaO is an important ingredient for improving the transmissivity of the glass, while also increasing the refractive index of the glass, and improving the weathering stability of the glass.

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Inventors:

KUANG BO (CN)

Application Number:

PCT/CN2015/070844

Publication Date:

July 30, 2015

Filing Date:

January 16, 2015

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Assignee:

CDGM GLASS CO LTD (CN)

International Classes:

C03C3/19

Foreign References:

CN1974453A	2007-06-06
CN1754851A	2006-04-05
JP2004168593A	2004-06-17

Attorney, Agent or Firm:

SISUN INTELLECTUAL PROPERTY AGENT CO., LTD. (CN)
成都希盛知识产权代理有限公司 (CN)

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