Patent ID: 11867562
Assignee: VISERA TECHNOLOGIES COMPANY LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. The optical device as claimed in claim 15, wherein emission of signals of the periodic sine wave light is synchronized with operation of a readout circuit, and the signals are read at various times by the readout circuit and converted into digital signals via an A/D converter, and a photoluminescence lifetime of the photon conversion thin film is calculated using equation (I) and converted into a temperature map, wherein, τ
     =
     
      -
      
       t
       
        ln
        ⁢
          
        
         (
         
          
           I
           ⁡
           (
           t
           )
          
          /
          
           I
           ⁡
           (
           0
           )
          
         
         )
        
       
      
     
    
   
   
    
     (
     I
     )
    
   
  
 

in equation (I), t represents time, I(0) represents initial signal intensity, I(t) represents signal intensity at time t, and τ represents the photoluminescence lifetime.