专利名称：Method of manufacturing gradient index
optical elements
发明人：Minoru Inami,Masayuki Yamane申请号：US07/838102申请日：19920218公开号：US05244844A公开日：19930914
摘要：A method of manufacturing a gradient index optical element comprisespreparing a sol using silicon alkoxide and an aqueous metal salt solution as a source ofindex-modifying cations. The sol is treated to obtain a wet gel. Metal salt from the wetgel is eluted by immersing the wet gel in a solvent to produce a concentration gradiationof the metal salt in the wet gel. The metal salt is fixed in the wet gel by immersing thewet gel in a solvent. The steps of eluting and fixing are repeated so that a gradient indexoptical element is produced having a large difference in refractive index between theouter periphery portion and the center of the gel.
申请人：OLYMPUS OPTICAL COMPANY LIMITED
代理人：Bruce L. Adams,Van C. Wilks
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