Photometric file how do I question 1

[centaur21]

How do I write my own photometric file (.ies)? I googled it but didn't see much about this subject. Does anyone know of a tutorial on how to write one OR someone who has done it and could tell me how or where to go?

THANKS!!

 

[Senselessticker]

I have only used photometric files to plug into a lighting calcs. Most vendors have *.ies files available for download for almost every imaginable lighting fixture/bulb combination.

It seems to me that any *.ies file would have to be generated from from data obtained during some kind of approved standard testing. I have no idea how these test are conducted, nor how the data is collected. The file itself is just plain text.

 

[pugwash]

Centaur-

Try this link for a download of "Lumdat":

http://light.peters-research.com/lumdat.htm

You'll soon find out how much fundamental data you need from the manufacturer and probably give up like me!!

 

[centaur21]

Thanks pugwash!