发明名称 Method of fabricating diffraction grating masters and apparatus therefor
摘要 A method of producing a diffraction grating master which comprises exposing a plurality of reduced first grating patterns on a light sensitive layer in conformance with a predetermined code; processing the light sensitive layer to produce first gratings therein; exposing a plurality of reduced second grating patterns on the light sensitive layer (superimposed on the first gratings) and repeating the processing step to produce the second gratings; vacuum depositing a layer of silver on the superimposed first and second gratings; electroplating a layer of nickel on the silver layer on the superimposed gratings; separating the resulting nickel-silver layer from the light sensitive layer; and reinforcing the nickel-silver layer (formed in the pattern of the first and second gratings) for use as an embossing master. A special electroplating fixture used in the electroplating step insures that the nickel layer being deposited lies flat without "peeling".
申请公布号 US4044939(A) 申请公布日期 1977.08.30
申请号 US19750611377 申请日期 1975.09.08
申请人 NCR CORPORATION 发明人 HORST, WILLIAM R.;MCNAUGHTON, JAMES L.;MORT, CHARLES F.
分类号 G06K19/10;B42D15/10;G02B5/18;G03H1/00;G06K19/06;G06K19/16;G06Q40/00;G07F7/08;(IPC1-7):G02B27/38;B23P3/24 主分类号 G06K19/10
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