OPTICALLY CHANGING PROTECTIVE DEVICE Russian patent published in 2011 - IPC B42D15/10 B44F1/12 G03F7/20 

Abstract RU 2431571 C2

FIELD: physics, optics.

SUBSTANCE: produced device id formed as follows. Photo resistive undeveloped layer is produced on electrically conducting layer. First diffraction mask is made on undeveloped photo resistive layer with the help of optical interferometry. Second diffraction mask is made on undeveloped photo resistive layer with the help of electron-ray lithography. Photo resistive layer is developed.

EFFECT: diffraction masks produced in one photo resistive layer.

26 cl, 16 dwg

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RU 2 431 571 C2

Authors

Kholms Brajan Uill'Jam

Dates

2011-10-20Published

2007-01-19Filed