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公开(公告)号:US20060137398A1
公开(公告)日:2006-06-29
申请号:US11148764
申请日:2005-06-08
申请人: Daniel Bleaking , Dana Bookbinder , Richard Fiacco , Kenneth Hrdina , Pushkar Tandon , John Maxon , Kimberly Wilbert
发明人: Daniel Bleaking , Dana Bookbinder , Richard Fiacco , Kenneth Hrdina , Pushkar Tandon , John Maxon , Kimberly Wilbert
CPC分类号: C03C3/06 , C03B19/1453 , C03B2201/03 , C03B2201/04 , C03B2201/07 , C03B2201/075 , C03B2201/21 , C03B2201/23 , C03C2201/12 , C03C2201/21 , C03C2201/23
摘要: Disclosed are high purity synthetic silica glass material having a high OH concentration homogeneity in a plane perpendicular to the optical axis, and process of making the same. The glass has high refractive index homogeneity. The glass can have high internal transmission of at least 99.65%/cm at 193 nm. The process does not require a post-sintering homogenization step. The controlling factors for high compositional homogeneity, thus high refractive index homogeneity, include high initial local soot density uniformity in the soot preform and slow sintering, notably isothermal treatment during consolidation.