Patent ID: 8292953

Claim:
An ophthalmic lens, comprising: an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the shapes together providing a base optic power; an inner zone disposed about an optical axis, an intermediate zone disposed about the inner zone, and an outer zone disposed about the intermediate zone; a first diffractive profile imposed on one of the shapes and radially disposed within the inner zone; a second diffractive profile imposed on one of the shapes and radially disposed within the outer zone; a multifocal refractive profile imposed on one of the shapes and including a refractive portion radially disposed within the intermediate zone, the multifocal refractive profile including an add portion having refractive add power; wherein the first diffractive profile and the second diffractive profile are both multifocal diffractive profiles having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order; wherein the secondary diffraction order of the second diffractive profile has a diffraction efficiency at a visible light design wavelength that is greater than the secondary diffraction order of the first diffractive profile at the design wavelength; wherein the diffraction efficiency at a visible light design wavelength of the secondary diffraction order of the first diffractive profile is between 15 percent and 25 percent and the remaining diffraction efficiency of the first diffractive profile is with the primary diffraction order of the first diffractive profile; and wherein the diffraction efficiency at a visible light design wavelength of the secondary diffraction order of the second diffractive profile is between 25 percent and 35 percent and the remaining diffraction efficiency of the second diffractive profile is with the primary diffraction order of the second diffractive profile.