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1.
公开(公告)号:US20120213685A1
公开(公告)日:2012-08-23
申请号:US13459624
申请日:2012-04-30
申请人: Ryusuke MORITA , Takuya NAKAGAWA , Kei IWATA , Masaaki TAKATA
发明人: Ryusuke MORITA , Takuya NAKAGAWA , Kei IWATA , Masaaki TAKATA
CPC分类号: C03C3/06 , C03B19/1453 , C03B2201/03 , C03B2201/04 , C03C4/0085 , C03C2201/21 , C03C2201/23 , G03F1/50 , G03F7/70958 , Y02P40/57
摘要: The present invention relates to an optical member for deep ultraviolet having a wavelength of 250 nm or shorter, containing a synthetic silica glass which does not substantially contain a halogen element, has a maximum OH group content of less than 10 ppm by weight, has contents of ODC (oxygen deficient centers) and E-prime center of each less than 1×1014 cm−3, does not substantially contain SiH and peroxy linkage, and has a fictive temperature of 1,050° C. or lower.
摘要翻译: 本发明涉及一种波长为250nm以下的深紫外线用光学构件,其含有基本上不含卤素元素的合成石英玻璃,其OH基含量的最大值小于10重量ppm,含有 的ODC(缺氧中心)和E-prime中心各自小于1×1014cm-3,基本上不含有SiH和过氧键,并且具有1050℃或更低的假想温度。