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sci.optics

Discussion relating to the science of op

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Message 11,448 of 12,750

Helpful person to Phil Hobbs

Re: Large lenses

06 Oct 13 21:26:06

   From: rrllff@yahoo.com   
      
   On Sunday, October 6, 2013 8:29:19 PM UTC-4, Phil Hobbs wrote:   
   >   
   > That's quite the lens.  Focal length?   
   >   
   > Cheers   
   >   
   > Phil Hobbs   
   > http://electrooptical.net   
      
   Surfaces are generally not too steep.  Radii are about 3 times the OD.   
      
   http://www.richardfisher.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)

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