Diffractive eye lens

A diffractive eye lens having a front side, a back side and a principal optical axis, wherein

• the front side, the back side or both have a spherical, an aspherical, a spherical-toroidal, an aspherical-toroidal or a free-form-shaped basic form, and
• the front side, the back side or both have a diffractive optical structure,
• the diffractive optical structure comprising a first lens region with a plurality of first ring-shaped diffraction zones circumferential to the principal optical axis of the eye lens, each diffraction zone having a principal sub-zone and a phase sub-zone,
• wherein
• the diffractive optical structure in the first lens region is designed such that
• at a design wavelength there is a significant diffraction efficiency for an optical path length difference between the first principal sub-zones of more than one wavelength and
• averaged over all diffraction zones the principal sub-zones make up a proportion of the diffraction zones of at least 94%, and
• wherein the diffractive optical structure is designed in such a way that in the first lens region that at the design wavelength there is no significant diffraction efficiency in orders of diffraction less than or equal to zero.