[Radiance-general] making my own ies file

[Bleicher, Thomas]

Chris.
 
You need to get the terminology right:
 
The "lamp" you're describing is a "luminaire": the lamp
is the small glass bulb that's inside it. (Yes, we do this
on purpose to confuse people ;)
 
The lamp for your luminaire is indicated as 
 
HMI 4000 W/SE G38 
 
and is described here:
 
http://www.osram.com.ro/pdf/service_corner/technicalinfo/4000WSE_E.pdf
 
and gives you a modes 380000 lumens.
 
I suppose that's why the luminaires are called 'daylight'

Thomas
 

  _____  

From: radiance-general-bounces at radiance-online.org
[mailto:radiance-general-bounces at radiance-online.org] On Behalf Of Chris
Foster
Sent: 03 August 2006 15:29
To: Radiance general discussion
Subject: RE: [Radiance-general] making my own ies file



Hi Dave

yeah i know what type of lamp, it was in the last email i wrote to
christian, its a 4000w fresnal lens spotlight from Arri. how do the mean
and initial lumens value help me? do i use one of them in the 'lumens
per lamp' value for the ies file

thanks chris


-----Original Message-----
From: radiance-general-bounces at radiance-online.org on behalf of J. David
Maino
Sent: Thu 8/3/2006 2:09 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] making my own ies file

If you know what kind of lamp you want to use, you can go to philips or
ge's website and find the
lamp there. They should have the mean and initial lumens listed that you
can then put into your IES
file. For the ballast factor, you can use 1, or you can go to a site
like advancetransformer.com and
find a ballast that will work with whatever lamp you've chosen and use
that ballast factor (although
generally you can find a ballast for your lamp that has whatever ballast
factor you want, so you
could probably just set this at whatever you want it to be).

Dave

Chris Foster wrote:
> Hello again,
> 
> Im making my own ies file for a spotlight i am using in a lab from
data
> i found at the manufacturers website. i have a graph of angle against
> brightness and i know the format of such a file from readin RwR.
however
> i can seem to find a description for some of the values needed, either
> in the book or in the online manuels
> 
> the file i have made so far looks as so, but the text in square
brackets
> are the values im not sure of (ignore the oridnary parenthesis, i
simply
> havent measured my spotlight yet.). i havent got access to the iesna
> standard and so was wondering if anyone on the list has knowledge of
> this area.
> 
> TILT=NONE
> 
> 1 [lumens per lamp] [candela multiplier] 11 [photometric type] [units
> type] (w) (l) (h)
> [ballast factor] 1 4000
> 0 0.5 1.5 3 4 5 6 7.5 9 11 17
> 0
> 1880000 1800000 1600000 1000000 600000 400000 250000 120000 100000
60000 0
> 
> i think that all the square bracket values have to be 1, but the one
im
> most unsure of is the lumens per lamp value. this is most definately
not
> 1, does anyone know what this is and how i calculate this for my
spotlight??
> 
> thanks in advance, any help much appreciated as usual (wish i could
give
> something back!).
> 
> Chris
> 
> p.s. still havent solved my last email either if anyone has any
> suggestions...
> 
> 
> 
>
>
>
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