In article <40caea20@news.povray.org>, Daniel Matthews <dan### [at] 3-enet> 
wrote:

> My reading so far indicates that a zone plate pattern of two refraction
> values will act as a lens, and will work in POV.
> If such a flat lens is in contact with a mirror is should focus ans reflect?

I'm not sure what you're talking about here, but it sounds like you're 
trying to simulate a diffraction effect. POV-Ray does not simulate 
diffraction. Making a len from a pattern of two indices of refraction on 
a flat surface is not possible in POV.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/

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