发明名称 LOW REFLECTION PATTERN FILM AND HEIGHT MEASURING DEVICE
摘要 <P>PROBLEM TO BE SOLVED: To provide a low reflection pattern film which can greatly lower reflectivity. <P>SOLUTION: A 1st chromium oxide layer (40 nm in thickness), a first chromium layer (200 nm in thickness), a second chromium oxide layer (57 nm in thickness), a second chromium layer (10 nm in thickness) and a third chromium oxide layer (69 nm in thickness) are laminated in this order on a quartz substrate. After forming a pinhole pattern by etching, a magnesium fluoride layer (101 nm in thickness) is laminated thereon. Consequently, the low reflection pattern film having &le;0.5% surface reflectivity to 530 to 590 nm wavelength and optical density of &ge;4 and having no polarization characteristic can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT
申请公布号 JP2006308722(A) 申请公布日期 2006.11.09
申请号 JP20050129097 申请日期 2005.04.27
申请人 NIKON CORP 发明人 OBATA TAKASHI;AMAMIYA NOBORU
分类号 G02B1/11;G01B11/02 主分类号 G02B1/11
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