发明名称 |
SYNTHESIZED SILICA GLASS FOR OPTICAL COMPONENT |
摘要 |
The present invention provides a synthetic silica glass for an optical member in which not only a fast axis direction in an optical axis direction is controlled, and a birefringence in an off-axis direction is reduced, but a magnitude of a birefringence in the optical axis direction is controlled to an arbitrary value, such that an average value of a value BR cos 2θxy defined from a birefringence BR and a fast axis directionθxy as measured from a parallel direction to the principal optical axis direction is defined as an average birefringence AveBR cos 2θxy, and when a maximum value of a birefringence measured from a vertical direction to the principal optical axis direction of the optical member is defined as a maximum birefringence BRmax in an off-axis direction, the following expression (1-1) and expression (2-1) are established:−1.0≰AveBR cos 2θxy<0.0 (1-1) 0.0≰BRmax≰1.0 (2-1).
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申请公布号 |
US2012182622(A1) |
申请公布日期 |
2012.07.19 |
申请号 |
US201213367780 |
申请日期 |
2012.02.07 |
申请人 |
TAKATA MASAAKI;SHAO LONG;IWATA KEI;OGAWA TOMONORI;ASAHI GLASS COMPANY, LIMITED |
发明人 |
TAKATA MASAAKI;SHAO LONG;IWATA KEI;OGAWA TOMONORI |
分类号 |
G02B27/12;B82Y20/00;C03B25/00 |
主分类号 |
G02B27/12 |
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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