6971fa81   
   XPost: sci.electronics.design   
   From: jasen@xnet.co.nz   
      
   On 2013-01-15, RichD  wrote:   
   >>   
   >> The article is saying the internal projection system is cheaper but   
   >> has the problem of the base blocking projection in that direction.   
   >   
   > I wonder, how does one build an internal projector,   
   > for display onto a 3-D sphere?   
      
   build it in the pedestal put optics in the sphere (mirrors, lenses)   
      
      
      
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