US 12,433,740 B2
Diffractive lenses for range of vision
Mark Jenkins Sanchez, Groningen (NL); Hendrik A. Weeber, Groningen (NL); and Miguel Faria Ribeiro, Braga (PT)
Assigned to AMO Groningen B.V., Groningen (NL)
Filed by AMO Groningen B.V., Groningen (NL)
Filed on Jul. 6, 2022, as Appl. No. 17/811,058.
Claims priority of provisional application 63/203,153, filed on Jul. 9, 2021.
Prior Publication US 2023/0011320 A1, Jan. 12, 2023
Int. Cl. A61F 2/16 (2006.01)
CPC A61F 2/1654 (2013.01) [A61F 2/1618 (2013.01); A61F 2/1656 (2013.01)] 33 Claims
OG exemplary drawing
 
1. An ophthalmic lens comprising:
an optic disposed about an optical axis and having an anterior surface and a posterior surface, and including a diffractive profile including a plurality of echelettes, wherein a first echelette of the plurality of echelettes includes an optical zone, wherein the optical zone includes a subshape having a gradual change in slope that includes a change in sign of the slope, and wherein a second echelette of the plurality of echelettes lacks a subshape having a gradual change in slope that includes a change in sign of the slope, and wherein the second echelette has a vertical transition zone, and wherein the first echelette has a curved transition zone between the first echelette and the second echelette.