发明授权
- 专利标题: Anomalous dispersion glass exhibiting the anomalous partially dispersing property in the long wave length region
- 专利标题(中): 在长波长区域表现出异常部分分散性的异常色散玻璃
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申请号: US712617申请日: 1976-08-09
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公开(公告)号: US4043852A公开(公告)日: 1977-08-23
- 发明人: Tetsuro Izumitani , Yasuo Fukuoka , Toshiharu Yamashita
- 申请人: Tetsuro Izumitani , Yasuo Fukuoka , Toshiharu Yamashita
- 申请人地址: JA Tokyo
- 专利权人: Hoya Glass Works, Ltd.
- 当前专利权人: Hoya Glass Works, Ltd.
- 当前专利权人地址: JA Tokyo
- 优先权: JA46-103521 19711220
- 主分类号: C03C3/072
- IPC分类号: C03C3/072 ; C03C3/14 ; C03C3/145 ; C03C3/08 ; C03C3/10 ; C03C3/30
摘要:
This invention provides an anomalous dispersion glass exhibiting an .eta. d value of 1.54-1.71 and an.nu. d value of 55-30, and the anomaly of a partially dispersing property in the long wave length region. The anomalous dispersion glass contains B.sub.2 O.sub.3 45-70 mol.%; Pb0 5-30 mol.%; Na.sub.2 O 1-15 mol.%; SiO.sub.2 0-10 mol.%; Al.sub.2 O.sub.3 5-25 mol.%; one or more of CaO, BaO, MgO and CdO 0-16 mol.%, and one of TiO.sub.2, ZrO.sub.2, Sb.sub.2 O.sub.3, Wo.sub.3 and Tl.sub.2 O 0-3 mol.%. Fluorine may be present in an amount such that the F/O ion ratio in the resulting glass lies in the range of 0-0.35.
公开/授权文献
- US5929445A Passive infrared detector 公开/授权日:1999-07-27
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