Hello everyone
I want to simulate an LED advertising screen to analyze its impact on the surrounding building windows. The existing IES files are all for the simulation of a single light source. Is there a way to simulate a Rectangular LED advertising screen?
Thanks
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How do you plan to incorporate the light distribution of the LED screen into your simulation? I doubt if you will find a IES file for the LED screen. One of the primary assumptions in conventional lighting design is that a light source can be considered a point source from the point at which measurements are being made (See point source approximation). This assumption won’t hold true for a LED advertising screen, especially in a scenario where you are trying to study the effects in its vicinity.
To perform a realistic simulation, at the very least you’d need a luminance profile of the LED screen (i.e. things like minimum intensity, max intensity etc). Then if you can assume that the screen has a lambertian distribution, you could use the glow material to create a material definition for the screen and incorporate it into a Honeybee simulation.
Although it does not deal with a massive screen, you might find this write-up useful.
Regards,
Sarith
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Thank you for your answer Sarith!
The brightness and size of the LED screen are known.I checked but did not know how to create a glow material in HB.I’m not very clear about this. Could you give me an example？
Thanks in advance!
Well, that is, by far, the easiest part of the whole thing. See the attached gh file.
Assuming this is for an actual project, what you are attempting to do is not a trivial simulation. I seriously doubt if you can just assume a lambertian distribution for a LED screen. I would suggest having a discussion with the screen manufacturer about the its brightness profile and then backing that up with some onsite measurements with a luminance meter.
Regards,
Sarith
GlowBoard.gh (972.4 KB)