DIFFRACTION STRUCTURE Russian patent published in 2001 - IPC

FIELD: diffraction. SUBSTANCE: diffraction structure has a backing, the first and second series of faces located at an angle to the plane of the backing. A diffraction grating with a period not exceeding 500 nm is formed on each face. The length of the face bases is within 1 to 100 μm, and the trough of the diffraction grating is within 0.1μm to half the face size. The period of the diffraction is less than the wavelength corresponding to the perceived color, and the opposite faces are made for catching of light with a lesser wavelength. The diffraction structure is obtained by formation of lines of machining on the surface of the faces, or by application of a silicone backing by an electron or ion beam on a protective layer positioned on a form obtained by anisotropic etching. EFFECT: obtained color within a wide range of angles of view and illumination. 11 cl, 11 dwg