dc36af23   
   From: boyd@apt0.sao.arizona.edu   
      
   Helpful person wrote:   
   > On Apr 17, 12:29 am, Louis Boyd  wrote:   
   >   
   >   
   >   
   >>3.  Enhanced infrared cameras.  These have their highest sensitivity in   
   >>the red-and infrared.  The Sony ExView cameras are an example.  They   
   >>have about 3x higher sensitivity in the IR, about like 1 and 2 in the   
   >>visible.  These work well to a few hundred yard range with a telephoto   
   >>lenses and partially focused diode IR laser.  ExView CCDs cost more and   
   >>usually have more defects than "plain" ccds.   
   >>   
   >   
   > I believe the Exview CCD response curve has a similar shape to a   
   > normal CCD camera, being more sensitive in the visible than the near   
   > IR.  However, it is more sensitive.   
   >   
   > http://www.richardfisher.com   
      
      
   This page has some useful info about commercial IR security camera   
   technology:   
   http://www.kl-security.com/technology/faq   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)