Patent ID: 11966060
Assignee: JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The optical waveguide device for display of claim 1, wherein the first and the second maximum average number N of reflections and M are calculated with the following formulae, respectively:, N
     =
     
      max
      ⁢
      
       (
       
        
         L
         
          4
          ⁢
          h
          ⁢
          tan
          ⁢
          
           (
           
            arc
            ⁢
            
             sin
             ⁡
             (
             
              
               
                sin
                ⁢
                
                 (
                 
                  θ
                  0
                 
                 )
                
               
               +
               
                
                 k
                 ⁢
                 λ
                
                d
               
              
              
               n
               2
              
             
             )
            
           
           )
          
         
        
        -
        
         0
         .
         5
        
       
       )
      
     
    
   
  
  
   
    
     M
     =
     
      max
      ⁡
      (
      
       
        L
        
         4
         ⁢
         h
         ⁢
         tan
         ⁢
         
          (
          
           arc
           ⁢
           
            sin
            ⁡
            (
            
             
              
               sin
               ⁢
               
                (
                
                 θ
                 0
                
                )
               
              
              +
              
               
                k
                ⁢
                λ
               
               d
              
             
             
              n
              1
             
            
            )
           
          
          )
         
        
       
       -
       
        0
        .
        5
       
      
      )
     
    
   
  
 

wherein L is a length of the first relief grating in the direction of the first grating vector, h is a thickness of the first waveguide substrate, θ0 is an incident angle of light relative to the first relief grating, k is the predetermined order, λ is a wavelength of light, and d is a grating period corresponding to the first grating vector.