[Radiance-general] RE: Lamp colour

[Anthony J. Farrell]

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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