US 12,447,009 B2
Achromatic lenses and lenses having diffractive profiles with irregular width for vision treatment
Franck Gounou, Groningen (NL); Hendrik A. Weeber, Groningen (NL); Robert Rosen, Groningen (NL); Carmen Canovas Vidal, Groningen (NL); and Patricia A. Piers, Groningen (NL)
Assigned to AMO Groningen B.V., Groningen (NL)
Filed by AMO GRONINGEN B.V., Groningen (NL)
Filed on Dec. 18, 2023, as Appl. No. 18/544,133.
Application 18/544,133 is a division of application No. 17/127,947, filed on Dec. 18, 2020, granted, now 11,844,689.
Claims priority of provisional application 62/955,355, filed on Dec. 30, 2019.
Prior Publication US 2024/0130851 A1, Apr. 25, 2024
Int. Cl. A61F 2/16 (2006.01); B29D 11/00 (2006.01); G16H 20/30 (2018.01)
CPC A61F 2/1656 (2013.01) [A61F 2/1624 (2013.01); A61F 2/1637 (2013.01); A61F 2/1654 (2013.01); B29D 11/00269 (2013.01); B29D 11/00961 (2013.01); G16H 20/30 (2018.01); A61F 2240/002 (2013.01); G05B 2219/2617 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
fabricating an optic for an ophthalmic lens, the optic including a diffractive profile including at least one set of echelettes, each echelette of the set having a different width in r-squared space than any other echelette of the set and the at least one set of echelettes repeating at least once upon the optic, and at least two echelettes of the set have a same step height or a same step offset,
wherein the at least one set of echelettes is positioned in a central zone of the optic that an optical axis pass through;
wherein the echelettes of the at least one set of echelettes are adjacent to each other;
wherein a first one of the at least one set of echelettes repeats adjacent to a second one of the set of echelettes;
wherein at least one echelette of the set is configured to distribute light to a near focus or to an intermediate focus; and
wherein the diffractive profile forms an extended depth of focus.