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Re: considering reflections in ray tracing with optica

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  • Subject: [mg28482] Re: [mg28467] considering reflections in ray tracing with optica
  • From: steffenz at
  • Date: Sun, 22 Apr 2001 01:30:15 -0400 (EDT)
  • Sender: owner-wri-mathgroup at


There are (as I know) no Fresnel reflections implemented in Optica. 
To get Transmission, Remission and Absorption without visualisation 
I`ve programmed these some time ago, but these programs are not well 
documented, so that I think they will be of no help for You.
At every partition of Ray[] You get the angle of the surface and 
angle of the ray, so it is possible to use the Fresnel formula to 
evaluate the intesity of th reflection and to start at this point a 
new ray with this intensity value.

best regards


> Date:          Fri, 20 Apr 2001 04:24:16 -0400 (EDT)
> From:          "Dr. Reto T. Meili" <reto.meili at>
To: mathgroup at
> To:            mathgroup at
> Organization:  MSE Meili - Multiphase Systems Engineering
> Subject: [mg28482]       [mg28467] considering reflections in ray tracing with optica

> Hi there!
> I was using Optica together with Mathematica some time ago and know its
> ray tracing features more or less. I'm now again confronted with such a
> problem, but this time I want to model not only the refracted part of
> the rays but also the reflected part, e.g. of not coated lenses and
> quantify it, i.e. I'd like to know how much light comes back for a
> certain configuration - if possible applying Fresnels equation for the
> spectral reflection grade or at least an approximation of it.
> Here my questions:
> -  is it possible to do this for 2/3 elements with optica? Version
> required?
> - if yes, is this a standard feature of the package or is there a lot of
> programming involved? Has anybody done this already and experience in
> this area? (we may discuss a salary for a good solution!).
> Thanks a lot for your help - it's appreciated!
> Best regards
> Reto Meili
> PS.: Is there a 'public' news server one may use for the news group
> comp.soft-sys.math.mathematica? Parameters? - thanks.
> --
> *****************************************************************
> Dr. Reto T. Meili
> MSE MEILI - Multiphase Systems Engineering
> Technoparkstr. 1, CH-8005 Z³rich, Switzerland
> phone: ++41-1-440 55 00, fax: ++41-1-440 55 04,
> email: reto.meili at / info:
> *****************************************************************
Dipl.-Ing. Steffen Zozgornik

Institut für Licht- und Bautechnik
an der Fachhochschule Köln
Gremberger Straße 151 a
D - 51105 Köln

Tel.: +49 - 221 - 83 10 95 
Fax.: +49 - 221 - 83 55 13 

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