Assigned to Arizona Board of Regents on behalf of the University of Arizona, Tucson, AZ (US)
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Filed on Nov. 20, 2024, as Appl. No. 18/954,376.
Application 18/954,376 is a continuation of application No. 18/213,147, filed on Jun. 22, 2023, granted, now 12,164,181.
Application 18/213,147 is a continuation of application No. 17/547,115, filed on Dec. 9, 2021, granted, now 11,693,260, issued on Jul. 4, 2023.
Application 17/547,115 is a continuation of application No. 16/933,106, filed on Jul. 20, 2020, granted, now 11,199,725, issued on Dec. 14, 2021.
Application 16/933,106 is a continuation of application No. 16/250,866, filed on Jan. 17, 2019, granted, now 10,725,320, issued on Jul. 28, 2020.
Application 16/250,866 is a continuation of application No. 15/136,770, filed on Apr. 22, 2016, granted, now 10,209,533, issued on Feb. 19, 2019.
Application 15/136,770 is a continuation of application No. 13/201,440, granted, now 9,320,594, issued on Apr. 26, 2016, previously published as PCT/US2010/024165, filed on Feb. 12, 2010.
Claims priority of provisional application 61/207,409, filed on Feb. 12, 2009.
Prior Publication US 2025/0076683 A1, Mar. 6, 2025
1. A diffractive multifocal lens comprising an optical element having a first diffractive optical surface having a radial surface profile having a diffractive structure comprising a plurality of concentric annular zones concentric with a central zone, wherein the optical thickness of the lens changes monotonically within each zone, a distinct step in optical thickness occurs at the junction between the zones, height of the steps differs between each adjacent zones, and a pattern of step height differences between two or more adjacent zones repeats radially from the central zone of the lens so as to tailor the proportions of the diffraction order efficiencies of at least three orders of the radial surface profile of the optical element corresponding to distance, intermediate, and near vision, wherein the lens has a radial phase profile of the optical phase change introduced by the diffractive structure, and elements of the radial phase profile within each of the concentric annular zones comprise a peak having a leading edge that rises from a first value, to a peak value, and a trailing edge that falls from the peak value back towards the first value.
