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公开(公告)号:US06845634B2
公开(公告)日:2005-01-25
申请号:US10175945
申请日:2002-06-20
申请人: Hong Tan , Youmin Liu , Yushan Tan
发明人: Hong Tan , Youmin Liu , Yushan Tan
CPC分类号: C03C15/025 , C03B25/02 , C03C3/089 , C03C21/002
摘要: A fabrication method for a thallium-doped GRIN lens composed of a simplified glass composition is described. The composition is composed of silicon, oxygen, boron, zinc, potassium, sodium, and thallium. The method is comprised of preparing a cylindrical preform, annealing the cylindrical preform, removing contaminants from preform thereafter extruded to form a glass rod, exposing the glass rod to an alkali salt bath, and chemically milling the glass rod within an acid bath. Method and composition produce colorless lenses with a refractive index from 1.5900 to 1.7810, an insertion loss no greater than 0.05 dB, and a chromatic transmittance greater than 90 percent.
摘要翻译: 描述了由简化的玻璃组合物构成的铊掺杂的GRIN透镜的制造方法。 该组合物由硅,氧,硼,锌,钾,钠和铊组成。 该方法包括制备圆柱形预成型件,退火圆柱形预成型件,从预成型件中除去污染物,然后挤出以形成玻璃棒,将玻璃棒暴露于碱性盐浴中,并在酸浴内化学研磨玻璃棒。 方法和组合物产生无色透镜,折射率为1.5900至1.7810,插入损耗不大于0.05dB,色透度大于90%。