Noise from the bulb

[Zvi]

The bulb in the lump creates noise. The scene units are meters, the power of the point light is 1 watt! There is global illumination. No roughness in the materials. How can I avoid this noise?

[KeyShot]

That looks odd indeed. Can you share your model with support@luxion.com, so we can take a look at it?

[Zvi]

I have no problem to share the model with anyone who can help solve the problem.

[LayC42]

What do you think about this result?

[Zvi]

It looks good. The noise disappeared. Although it is hard to see the translucency. How did you do it?

[LayC42]

I did  nothing special. Just
- deleted unwanted parts, the inner parts from the bulb
- changed the outer parts of the bulb to emissive
- changed the light type

You'll see all in the attached bib file

[Zvi]

Thanks a lot.
But you didn't delete the inner part from the bulb because you didn't need to, you changed the outer parts of the bulb to flat, not to emissive. I tried this idea of emissive but it didn't help. I also changed the light type, and it didn't remove the noise.
And again, thank you!

[Zvi]

Actually, we didn't find a solution for using the translucent material without all the noise, when there are multiple layers of glass.

[LayC42]

I don't know why you would use a translucent material for glowing objects?
So a flat material for the bulb with a point light in the center should be enough. Perhaps you can play with a small cylinder inside the bulb as an invisible area light. So you have more control about any shadows.

Please share your test results.

[Zvi]

While in my case the results are satisfying' as you can see in the attached image,  I am worry about the future, in other models, not of bulbs.

[Zvi]

Thank you for the information. It looks nice, but I wanted the bulbs tube to be seen.

[LayC42]

I like Eric's solution. Very good work, I just had time for a quick and dirty solution.

But, if you want to see the bulb spirals, then it doesn't have to glow.  Then will the flat material your best friend.

[bdesign]

Thank you, LayC42. In hindsight I realized that the watts power was too intense, and I had made an error in rebuilding the glass (intersecting geometry). I'll be posting an updated, improved version soon.

Eric