[Radiance-general] Stadium light [was: trans material file]

[Guglielmetti, Robert]

I don't think it's all that difficult to create an IES file from scratch
(assuming one has a proper test report and either IES LM-63 or Ian's great
paper that Thomas cites below). Lighting Analysts has a nice piece of
software called "Photometric Toolbox" that guides you through the process
of generating your own IES file as well. But again, this assumes you have
a photometric test report with all the candela values in hand. If you
don't have that, Thomas' suggestion of trying to find a similar product
that has been tested is the way to go.
 
Rob Guglielmetti  IESNA, LEED AP
Commercial Buildings Research Group
National Renewable Energy Laboratory
1617 Cole Blvd MS:RSF202
Golden, CO 80401
T. 303.275.4319
F. 303.630.2055
E. robert.guglielmetti at nrel.gov





On 1/31/11 6:31 AM, "Thomas Bleicher" <tbleicher at googlemail.com> wrote:

>On Mon, Jan 31, 2011 at 6:41 AM, Tim Metcalfe <tmetcalfe at kalwall.com>
>wrote:
>> Hello all,
>>
>> I am looking to write a file to import in Ecotect for a 75 fc electric
>> stadium light.
>>
>> Since electric lights are not my usual I am at a loss. Any suggestions?
>
>Tim. I hope you are looking just for a way to import distribution data
>into Ecotect.
>
>In that case, IES is your friend. IIRC you define it as a type of
>material in Ecotect. If you go through the materials you should find
>some examples for "light materials" which should get you going.
>
>If you want to roll your own IES file ...
>
>Are you sure about this? If you have a fitting that's safety-tested
>enough to go in a stadium you should be able to get an IES file. If
>not I would still look for a distribution file of a similar fitting
>before I start to hack together my own IES file.
>
>If you really want to dive into it I recommend "Thinking
>Photometrically (II)" by Ian Ashdown as first start:
>
>http://www.dial.de/CMS/German/Articles/Licht/Service/Downloads/Thinking_Ph
>otometrically_II.pdf
>
>Good luck,
>Thomas
>
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