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SYSTEM FOR REGIONAL ETCHING OF HOLOGRAPHIC MICROETCHINGS, DIFFRACTION GRATINGS, KINOGRAMS, PIXELGRAMS OR OTHER OPTICAL ELEMENTS ON SHEETS
SYSTEM FOR REGIONAL ETCHING OF HOLOGRAPHIC MICROETCHINGS, DIFFRACTION GRATINGS, KINOGRAMS, PIXELGRAMS OR OTHER OPTICAL ELEMENTS ON SHEETS
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机译:片状全息微刻蚀,衍射光栅,千分尺,像素图或其他光学元件的区域刻蚀系统
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摘要
In accordance with a first solution there is used an electroformed printing plate bearing microetchings in high relief. In accordance with another solution there is used for the microetching an etching unit in which: the embossing roll bears and electroformed printing plate bearing the regional microetchings at the same height as the other regions of the plate which are not etched, and the counterthrust roll rotates synchronously with the embossing roll and displays on its surface high reliefs in the regions designed to face the microetched regions of the printing plate during the etching process.
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