Patent ID: 11860526
Assignee: BEIJING ASU TECH CO. LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The projection system of claim 4, wherein in the light source module, each of the first light source sub-module and the second light source sub-module comprises a laser diode array, wherein the light source module further comprises a first collimating lens array and a second collimating lens array, arranged over a light-emitting surface of the first light source sub-module and the second light source sub-module respectively, wherein sub-eyes in each of the first collimating lens array and the second collimating lens array are arranged to correspondingly align with laser diodes in the laser diode array of a corresponding light source sub-module, wherein:
each sub-eye comprises a hyperbolic aspheric lens, having a curved surface expressed as:, z
    =
    
      
        
          
            c
            x
          
          ⁢
          
            x
            2
          
        
        +
        
          
            c
            y
          
          ⁢
          
            y
            2
          
        
      
      
        1
        +
        
          
            
              1
              -
              
                
                  (
                  
                    1
                    +
                    
                      k
                      x
                    
                  
                  )
                
                ⁢
                
                  c
                  x
                  2
                
                ⁢
                
                  x
                  2
                
              
              -
              
                
                  (
                  
                    1
                    +
                    
                      k
                      y
                    
                  
                  )
                
                ⁢
                
                  c
                  y
                  2
                
                ⁢
                
                  y
                  2
                
              
            
            )
          
        
      
    
  
  ;

where Cx is a curvature of the hyperbolic aspheric lens in an x-direction, Cy is a curvature of the hyperbolic aspheric lens in a y-direction, Kx is a conic coefficient of the hyperbolic aspheric lens in the x-direction, and Ky is the conic coefficient of the hyperbolic aspheric lens in the y-direction.