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1.
公开(公告)号:US5340637A
公开(公告)日:1994-08-23
申请号:US895430
申请日:1992-06-05
申请人: Makoto Okai , Shinji Tsuji , Akio Ohishi , Motohisa Hirao , Hiroyoshi Matsumura , Tatsuo Harada , Toshiaki Kita , Hideki Taira
发明人: Makoto Okai , Shinji Tsuji , Akio Ohishi , Motohisa Hirao , Hiroyoshi Matsumura , Tatsuo Harada , Toshiaki Kita , Hideki Taira
CPC分类号: G02B5/1857 , Y10T428/2457 , Y10T428/24612 , Y10T428/24942
摘要: A method of fabricating diffraction gratings wherein a photomask is arranged on a substrate which is coated with a photoresist, light is to be incident thereupon at an acute angle relative to the normal direction of the photomask, and a bright/dark pattern is formed on said photoresist by the interference of the transmission light that has passed through the photomask and the diffraction light. The invention further deals with a photomask used for the above method.
摘要翻译: 一种制造衍射光栅的方法,其中光掩模布置在涂覆有光致抗蚀剂的基底上,光将相对于光掩模的法线方向以锐角入射到其上,并且在所述光掩模上形成明暗图案 通过透过光掩模的透射光的干涉和衍射光的光致抗蚀剂。 本发明还涉及用于上述方法的光掩模。