From: michael.balda@gmail.com   
      
   Am Freitag, 31. Januar 2014 12:18:23 UTC+1 schrieb Michael Balda:   
   > I'd like to use a pattern projector for computer vision tasks. The pattern   
   can be in the NIR range, should not repeat itself but doesn't need to be   
   described exactly, so random noise, speckle etc. should be fine. It would be   
   preferrable, if the pattern    
   can be restricted to a defined field of view instead of being omni-directional   
   and was stable over time. Of course there are several different approaches but   
   I would like to find one which is    
   >    
   > (a) cheap,    
   >    
   > (b) robust,    
   >    
   > (c) efficient (in terms of power consumption),    
   >    
   > (d) not too complex,   
   >    
   > (e) has good availability of components and    
   >    
   > (f) is monochromatic or has small bandwidth.   
   >    
   >    
   >    
   > Thanks in advance for any suggestions.   
      
   After some (probably inefficient) research, I found a component that basically   
   fulfills most of my requirements: http://www.laser2000.de/Produk   
   e/Photonics/Bildverarbeitung/Laser-fuer-die-Bildverarbeitung/RPP   
   Random-Pattern-Projector.html   
   (sorry, no English version available)   
   However, for some reason that's rather unclear to me, it is ridiculously   
   expensive (at something around 800-900 EURO).   
      
   Regards,   
   Michael   
      
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