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".
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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