Re: [ATM] ZEMAX

["Richard F.L.R. Snashall" <rflrs@rcn.com>]

Richard wrote:
>
> RFLRS> depending on what part of ZEMAX
> RFLRS> you believe
>
> All of it. It is the premiere optical design program and in a class of
> its own.
But what ZEMAX is occasionally very good at is telling one
how thick they can be.  After numerous massaging iterations,
it dawned on me that the Schiefspiegel I presented had a
limiting design of infinite length:-(

However, in the 200 mm f/14.7 design, when I restricted
the baffle end of the primary cone to about two apertures,
the footprint was containable in about the same box size
as the Kutter tri-Schiefspiegel design; of course, the
"box" footprint shape favors this design as it utilizes
all of it.  I also cheated in that two aperture baffle
appears to be the length for which the primary conic is
already roughly -1.0.  The updated design is at:

    http://users.rcn.com/rflrs/schiefspf14p7-10x.atm   ATMOS input file
    http://users.rcn.com/rflrs/schiefspf14p7-10x.len   OSLO input file
    http://users.rcn.com/rflrs/schiefspf14p7-10x.txt   TEXT prescription
    http://users.rcn.com/rflrs/schiefspf14p7-10x.zmx   ZEMAX input file

Still, this design has a ballpark order of magnitude smaller
spot size than the Kutter design.  The footprint compression
does reduce the Visual Strehl over the full field to 0.944.



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