Patent ID: 11934911
Assignee: ZEBRA TECHNOLOGIES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 22:
23. A barcode imager comprising:
an imager configured to capture images over a field of view of the barcode imager each image is to be captured during a frame duration of the barcode imager;
an aiming assembly comprising a green laser source and configured to generate a green laser aiming pattern within the field of view of the barcode imager and comprising an emission having a wavelength within 495 nm-570 nm; and
a controller configured to control the green laser source to generate the green laser aiming pattern as a single aiming pulse per each frame duration and having a duty cycle over each frame duration that simultaneously satisfies a frame duration-independent, peak pulse optical power constraint and a frame duration-dependent heat dissipation constraint,
wherein the duty cycle, DC, over each frame duration that simultaneously satisfies the peak pulse optical power constraint and the heat dissipation constraint is expressed as being within +20% and −90% of:, D
   ⁢
   C
  
  =
  
   
    (
    
     Tf
     
      T
      ⁢
      1
     
    
    )
   
   
    1
    3
   
  
 

where Tf is the frame duration and T1 is the time window duration and varies with power rating of the green laser source according to a laser safety class.