Patent ID: 11906814
Assignee: JIANGXI LIANCHUANG ELECTRONIC CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 6:
7. The prime lens module as claimed in claim 1, wherein the shape of aspheric surface of each aspheric lens in the prime lens module satisfies the following expression:, z
    =
    
      
        
          ch
          2
        
        
          1
          +
          
            
              1
              -
              
                
                  (
                  
                    1
                    +
                    k
                  
                  )
                
                ⁢
                
                  c
                  2
                
                ⁢
                
                  h
                  2
                
              
            
          
        
      
      +
      
        
          a
          4
        
        ⁢
        
          h
          4
        
      
      +
      
        
          a
          6
        
        ⁢
        
          h
          6
        
      
      +
      
        
          a
          8
        
        ⁢
        
          h
          8
        
      
      +
      
        
          a
          10
        
        ⁢
        
          h
          10
        
      
      +
      
        
          a
          12
        
        ⁢
        
          h
          12
        
      
    
  
  ;

where z represents a vector height between a point on the surface and a vertex of the surface along an optical axis of the prime lens module;
h represents a distance between the point on the surface and the optical axis;
c represents a curvature of the vertex of the surface;
k represents a conic coefficient;
a4 represents a fourth order surface coefficient;
a6 represents a sixth order surface coefficient;
a8 represents an eighth order surface coefficient;
a10 represents a tenth order surface coefficient; and
a12 represents a twelfth order surface coefficient.