Modeling a flat-screen monitor

radiance-general
1

I'm trying to model a computer screen for glare analysis in Radiance. I
have measured luminance values for the monitor showing white and black
screens in a dark room, as well as spectrophotometer reflectance data on
the screen while off. Currently, I'm modeling it using a generic glass
material in front of a glow material, but this creates a lot of specular
reflection in rpict renderings that doesn't match up with observations.
Does anyone have suggestions for creating more accurate Radiance materials
to model the monitor?

Thanks,

Nathaniel

2

Hi Nathaniel,

You should check out Niloofar Moghbel's Ph.D. dissertation at:

  http://d-nb.info/1025887379/34

It has a whole section on VDT modeling that may be useful. A summary of her work may be found in her workshop presentations at:

  http://radiance-online.org/community/workshops/2010-freiburg/PDF/Moghbel_Radiance_2010.pdf

and:

  http://www.radiance-online.org/community/workshops/2008-fribourg/Content/Moghbel/Presentation_Niloofar_Moghbel.pdf

Cheers,
-Greg

···

From: Nathaniel Jones <[email protected]>
Date: February 19, 2014 8:51:03 AM PST

I'm trying to model a computer screen for glare analysis in Radiance. I have measured luminance values for the monitor showing white and black screens in a dark room, as well as spectrophotometer reflectance data on the screen while off. Currently, I'm modeling it using a generic glass material in front of a glow material, but this creates a lot of specular reflection in rpict renderings that doesn't match up with observations. Does anyone have suggestions for creating more accurate Radiance materials to model the monitor?

Thanks,

Nathaniel

3

Trying to resend -- this has been stuck in the queue since yesterday morning....

If other people are not seeing their posts, send me an e-mail directly <[email protected]>.

-G

···

From: Greg Ward <[email protected]>
Date: February 27, 2014 1:24:20 PM PST
To: Radiance general discussion <[email protected]>
Subject: Re: [Radiance-general] Modeling a flat-screen monitor

Hi Nathaniel,

You should check out Niloofar Moghbel's Ph.D. dissertation at:

  http://d-nb.info/1025887379/34

It has a whole section on VDT modeling that may be useful. A summary of her work may be found in her workshop presentations at:

  http://radiance-online.org/community/workshops/2010-freiburg/PDF/Moghbel_Radiance_2010.pdf

and:

  http://www.radiance-online.org/community/workshops/2008-fribourg/Content/Moghbel/Presentation_Niloofar_Moghbel.pdf

Cheers,
-Greg

From: Nathaniel Jones <[email protected]>
Date: February 19, 2014 8:51:03 AM PST

I'm trying to model a computer screen for glare analysis in Radiance. I have measured luminance values for the monitor showing white and black screens in a dark room, as well as spectrophotometer reflectance data on the screen while off. Currently, I'm modeling it using a generic glass material in front of a glow material, but this creates a lot of specular reflection in rpict renderings that doesn't match up with observations. Does anyone have suggestions for creating more accurate Radiance materials to model the monitor?

Thanks,

Nathaniel