Patent ID: 11914283
Assignee: AGC INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The reflected mask blank according to claim 1, wherein denoting as λMAX a peak wavelength in a reflected light spectrum of the absorbent layer, the peak wavelength satisfies:, (
    
     
      1
      ⁢
      
       3
       .
       5
      
      ⁢
      3
     
     +
     
      i
      
       1
       ⁢
       0
      
     
     -
     
      0
      .1
     
    
    )
   
   ⁢
     
   nm
  
   
  ≤
  
   λ
   
    M
    ⁢
    A
    ⁢
    X
   
  
  ≤
  
   
    (
    
     
      1
      ⁢
      
       3
       .
       5
      
      ⁢
      3
     
     +
     
      i
      
       1
       ⁢
       0
      
     
     +
     0.1
    
    )
   
   ⁢
      
   nm
  
 

in correspondence to the integer i.