Full text of article: Russian language.

Abstract:
We derive general non-paraxial analytical representation of the eikonal function for design of diffractive optical element (DOE) to focus into a arbitrary oriented plane line. The eikonal is given in special curvilinear coordinates. The calculation of the eikonal on condition of focusing into a line with prescribed intensity distribution is reduced to solving of a first-order differential equation solved for the derivative. We design DOEs to generate a line-segment focus. The simulation data shows that the DOE produces high performance focal lines.

Key words: eikonal, diffractive optical element, curvilinear coordinates, intensity, light field, line density.

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