AccuRender nXt

advanced rendering for AutoCAD

Okay, so what's the best way to create hidden LED lighting without getting reflected light sources and millions of "fireflies"?

Views: 405

Reply to This

Replies to This Discussion

You might try modeling them with a hidden, rectangular, area light. Many of these LED strip lights are encased in a plastic diffusing tube for this very reason.

Make sure the light is facing the right direction.

Most hidden LED strip light is now sold from a roll by the metre. This is the sort of stuff we use.

I've tried using a rectangular area light, but that gives me an unrealistic rectangular reflection.

I may have to resort to Photoshop to fake it.

Yep-- these sometimes do exhibit discreet reflections.  Does the hybrid engine do any better with these?

I'll give it a whirl tomorrow.

this s what i get when trying to simulate led strips. i used rectangular hidden and visible area lights with the path tracer.

It works pretty well for this-- where the surfaces are diffuse.  Peter's got a more reflective surface which probably would show reflections of the individual light sources in the roll.  It's an interesting problem (and an actual one faced by designers, not just simulators/renderers.)  LED lighting is more discretized and less diffuse than other forms of lighting.

okay, but why should one try to draw each separate light source? As you mentioned before, most of the time these are behind a diffuse cover.

If they're behind a diffuser-- yep-- modeling the diffuser as a light source will get you most of the way there.  The type of lighting that a lot of folks are using, though, is these exposed 3M lighting strips.  They resemble Christmas lighting a little bit and may be difficult to simulate adequately.  We'll see.

Hello Peter and Roy.

I use the Rectangular Area Light, in my case Im not creating the renders for light precision. I do end up however having to always play with light channels to my advantage and also separate Render Engines and overlay.

Attachments:

RSS

Search

Translate

Latest Activity

Maciej commented on Maciej's photo
Thumbnail

c3

"BTW - Ant idea how to get rid of this "grain"? More than 500 passes (Path Tracer) and only HDR lighting. Unfortunately to no avail..."
1 hour ago
Maciej commented on Maciej's photo
Thumbnail

g2

"Thank you George."... I always avoid to change material - colour - surface quality on the outer corners, but only on inner ones. " - So do I.  Client's wish.  :)"
1 hour ago
George Ioannidis commented on Maciej's photo
Thumbnail

g2

"Very contemporary feel of space here Maciej! Great job!"
Saturday
George Ioannidis commented on Maciej's photo
Thumbnail

g2

"A note off topic, clearly subjective: I always avoid to change material - colour - surface quality on the outer corners, but only on inner ones."
Saturday
Maciej posted photos
Thursday
Peter Milner replied to Peter Milner's discussion AutoCAD 2021
"I think we'll need to renew our license first before installing the latest version. I'll let you know how it goes."
Mar 31
Rich Hart replied to Peter Milner's discussion AutoCAD 2021
"Try installing the latest version on this downloads page: http://renderplus.com/wp2/download/?product=autodesk It works for me with AutoCAD 2021."
Mar 27
Peter Milner posted a discussion

AutoCAD 2021

Is there a new version of Accurender to work with AutoCAD 2021.I've tried loading my existing version in, but it doesn't work.See More
Mar 27

© 2020   Header image courtesy Peter Milner   Powered by

Badges  |  Report an Issue  |  Terms of Service