Patent ID: 11892713
Assignee: ALCON INC.
Field: Optics (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. An ophthalmic lens, comprising
an optic comprising an anterior surface, a posterior surface, and an optical axis, at least one of the anterior surface and the posterior surface having a surface profile including:
a base curvature; and
a morphed sinusoidal phase shift structure modifying the base curvature along a portion of the surface profile, wherein the morphed sinusoidal phase shift structure comprises a plurality of morphed sinusoidal phase shift zones, wherein each of the plurality of morphed sinusoidal phase shift zones comprises a single sinusoidal period;
wherein the surface profile is defined as:

Zoptic(r)=Zbase(r)+ZMSPS(r)

wherein Zbase(r) defines the base curvature that is aspheric; and
ZMSPS(r) defines the plurality of morphed sinusoidal phase shift zones;, Z
          MPSS
        
        ⁡
        
          (
          r
          )
        
      
      =
      
        
          M
          i
        
        ⁢
        
          
            T
            i
            P
          
          π
        
        ⁢
        
          (
          
            1
            -
            
              cos
              ⁡
              
                (
                
                  
                    
                      r
                      -
                      
                        R
                        i
                      
                    
                    
                      T
                      i
                      P
                    
                  
                  ⁢
                  π
                
                )
              
            
          
          )
        
      
    
    ,
    
      
        R
        i
      
      ≤
      r
      <
      
        
          R
          i
        
        +
        
          T
          i
          P
        
      
    
  

  
    
      
        
          Z
          MPSS
        
        ⁡
        
          (
          r
          )
        
      
      =
      
        
          M
          i
        
        ⁢
        
          
            T
            i
            P
          
          π
        
        ⁢
        
          (
          
            1
            -
            
              cos
              ⁡
              
                (
                
                  
                    
                      
                        r
                        -
                        
                          R
                          i
                        
                        -
                        
                          T
                          i
                          P
                        
                      
                      
                        
                          R
                          
                            i
                            +
                            1
                          
                        
                        -
                        
                          R
                          i
                        
                        -
                        
                          T
                          i
                          P
                        
                      
                    
                    ⁢
                    π
                  
                  +
                  π
                
                )
              
            
          
          )
        
      
    
    ,
    
      

    
    ⁢
    
      
        
          R
          i
        
        +
        
          T
          i
          P
        
      
      ≤
      r
      <
      
        R
        
          i
          +
          1
        
      
    
  

and:
r denotes a radial distance from the optical axis in units of (mm);
Ri and Ri+1 are starting and ending radial positions from the optical axis of each zone in units of (mm);
Mi are step heights of each zone in units of (μm);
TiP are critical points corresponding to a radial distance of a peak of each zone from the starting radial position of the zone; and
i indicates zone numbers i=0, 1, 2, 3 . . . , consecutively from the optical axis.