[Radiance-general] RE: Lamp colour

[Jack de Valpine]

Hi Anthony,

I believe that this is the paper that Greg is referring to:

http://www.anyhere.com/gward/papers/egwr02/index.html

-Jack

Anthony J. Farrell wrote:

>Greg,
>
>Thanks for the very helpful advice. Unfortunately I cannot access the link
>you gave me as it says 'object not found', what's the name of the paper?
>
>Apologies if my email was confusing, to simplify, I wish to illustrate to an
>audience the dynamics of artificial light in providing a warm and cool
>environment relative to mixing light from 2000 to 6000K as is presented by
>Philips
>(http://www.lighting.philips.com/gl_en/index.php?main=global&parent=global&i
>d=global&lang=en under' a new concept in office lighting ' and then to
>compare that with actual warm (morning or evening) and cool (midday) light
>from a window.
>
>The lamp colour defaults are 0.907 0.863 0.4762
>
>I wish to model the same lamp but with a colour of 2200 and 6000K resp.
>
>I now understand that the ies2rad program translates the colour from the -t
>and -c options into the .dat file which is used in generating the
>distributions. The .fmt file must be one just used by DRAD, so not to worry
>bout that.
>
>Now when I consider the human eye things get complicated. There is no
>spectral power distribution of the fluorescent illuminant and the spectral
>reflectances of your objects are also not available. It is a very simple
>office scene with angled desks, yellow chair, and light coloured partition
>dividers. Can you suggest where I can get generic data of this kind? Or can
>you suggest the best way to approach what I am trying to simulate?
>
>Thanks,
>
>Anthony
>
>P.S. Apologies for attaching the mailing list, hope this one gets through in
>proper format.
>
>
>
>
>  
>

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