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发明名称
中性滤光片
摘要
本发明系一种中性密度滤光片,其包括基板、复数层高折射率膜层和复数层低折射率膜层,相互交替层叠于基板上。基板是一透明塑胶基板,其材质可以为PET基板。该等高折射率膜层采用铁镍铬合金膜层,而各低折射率膜层采用SiO2膜层。其中,所述每一铁镍铬合金膜层中铁、铬的含量分别为:铁≦1%、镍≧75%及铬≦19.2%。本发明中性密度滤光片的中心波长为500nm;其膜层结构可表述为(HL)^4,其中H代表高折射率膜层,L代表低折射率膜层。
申请公布号
TW200641408
申请公布日期
2006.12.01
申请号
TW094117141
申请日期
2005.05.25
申请人
亚洲光学股份有限公司
发明人
刘兴雅
分类号
G02B5/20(2006.01)
主分类号
G02B5/20(2006.01)
代理机构
代理人
刘育志
主权项
地址
台中县潭子乡台中加工出口区南二路22之3号
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