DIFFRACTION GRATING, ORGANIC EL ELEMENT USING SAME, AND METHOD FOR MANUFACTURING SAID DIFFRACTION GRATING AND ORGANIC EL ELEMENT

摘要

A diffraction grating comprising:a transparent supporting substrate; anda cured resin layer which is stacked on the transparent supporting substrate and which has concavities and convexities formed on a surface thereof, whereinwhen a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities formed on the surface of the cured resin layer by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 µm-1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 10 µm-1 or less.