发明名称 |
Optical glasses |
摘要 |
An optical glass having a high dispersion and a refractive index in the range of from 1.53 to 1.86 and an Abbe number in the range of from 21 to 43 comprises substantially the following components in percent by weight: P2O5: 10-72 RI2O: 0-41 ZnO: 0-46 (provided that RI2O + ZnO: 5-50) Nb2O5: 22-63 wherein RI2O is Li2O, Na2O or K2O or combination of two or more thereof.
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申请公布号 |
US4261751(A) |
申请公布日期 |
1981.04.14 |
申请号 |
US19790013290 |
申请日期 |
1979.02.21 |
申请人 |
NIPPON KOGAKU K. K. |
发明人 |
NAKAMURA, HIROSHI;ICHIMURA, TAKEO |
分类号 |
C03C3/062;C03C3/16;C03C3/21;C03C3/253;(IPC1-7):C03C3/16;C03C3/12;C03C3/30 |
主分类号 |
C03C3/062 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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