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发明名称
DIFFRACTION OPTICAL ELEMENT AND ITS PRODUCTION
摘要
申请公布号
JPH0643311(A)
申请公布日期
1994.02.18
申请号
JP19920195584
申请日期
1992.07.22
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
WATANABE IWAO
分类号
G02B5/18;(IPC1-7):G02B5/18
主分类号
G02B5/18
代理机构
代理人
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