> 
  
  
  
Laser Driver/ 
  
  
  
  
  
  
    
| | 
| | 
| 
| 
Modulator | | 
—— mm mn tn ln nn mn tt mm nn nn my - | | 
P Detector ; Y m » 
| Phase < jer] a dee ledere ee bo 
| | 
Detector |/ & IO M THEN | 
Intensity XY- 
Detector Scanner 
  
  
  
I» 
> 
  
  
  
  
  
    
Scanner Control 
Unit 
Signal Processing Unit 
  
  
  
  
  
  
  
  
  
  
  
  
-X,Y,Z 
- Intensity 
Fig. 2-1: Blockdiagram of the 4D-LM 
Transmit 
and 
Receive Beam 
Fig. 2-2: Opto-Mechanical Deflection Unit 
© 
2 
T. 
$c 
ss 
25 | y 
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zie t R 
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| o z 2n ft, E M -—- 7 
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en / 
pn f t 
  
Fig. 2-3: Phase Difference Range Measurement