Channel Letter illuminated

[Anonymous]

Hi !

I've looked around on forums & youtube tutorials but i can't find the solution that i need. 

I try to make channel letter that are illuminated with LED.

I have attached the LED emissary  with 20 lm and 50 lm, but nothing seems to work.

When i do a "Profile 3" it works greatm thx to the background wall. (se picture)

But when i try to do the front lit profile, it gets all bad and non-illuminated.(se picture)

I call upon someone who is familiar with this kind of illumination and how my problem can be solved. 

If you know a good videon about just this problem or can explain very well, im all ears!

*I'm a rookie and I'm trying to learn, please go easy on me!*

[laughingcreek]

That actually looks about right to me.  light has to actually shine on something for you to be able to see it.  in the first one it shines on the back wall and bounces out so you can see it.  in the second won it just shines out into empty space.

[Anonymous]

Thank you for your insight!

I agree with you, but is there anyway i can solve this somehow?

I would like it to me more of a "shine & blur", to make it look more like the illusion of "light" 🙂

Thank you!

[TrippyLighting]

Can you share\ your model ? I’d llike to play with it.

[chrisplyler]

Maybe try modeling a very thin membrane out in front of the sign? Using a transparent material with a bit of roughness and refractory index higher than 1.

[TrippyLighting]

The keyword is translucent vs. transparent. A diffusing/scattering  material is needed in front of the light source.

[Anonymous]

@TrippyLighting

How may I share the model?

As writen above, I'm a Rookie!

[TrippyLighting]

Export your design s a .f3d and attach it to the next post. Or follow these instructions.

[Anonymous]

@TrippyLighting

Lets hope I did it right!

[chrisplyler]

You may either:

1. Right-click on a file in your Data Panel and click Share Public Link, then paste that link into a post. Those who click the link will be taken to an online A360 page of the file from which they can manually download it and then upload it into their own Data Panel, or...

2. Use the File>Export command to save an F3D file onto your computer's hard drive, which can then be attached to a post by scrolling down to the Attachments section, browsing for the file and selecting it. Those who click on the attached file will be able to open it directly into their Fusion 360 desktop client.

[chrisplyler]

Perhaps getting some reflective surfaces nearby will help?

Yeah, I know, one of my bulbs is burned out...

[chrisplyler]

Actually making cans with "lamps" inside and a front panel using the ABS material with the roughness lowered and the translucency jacked up yields the following.

I think the slight variance in luminosity and slight hint at an interior really helps trick the eye into seeing this design as "lit" from inside.

Peter, can i come work for you and make the big bucks?

[chrisplyler]

Or, if you were in a fun mood like I am, you could embed LED strips into acrylic.

[TrippyLighting]

---

@chrisplyler wrote:

Peter, can i come work for you and make the big bucks?

---

Ha Ha Ha. No big bucks yet 😉 My lighting business is really a small one man show.

But it's really fun playing with lighting effects in a rendering engine.

However, if you really want to get into that, Fusion 360's emitters are actually pretty limited. For that sort of stuff I work with Indigo Renderer.

[chrisplyler]

I didn't know Fusion had "emitters." I just edited a material to jack up the luminence.

[TrippyLighting]

Well, that's what I meant with emitters. A surface with an emitting material applied.

[chrisplyler]

Oh okay cool.

I've not played around with rendering much at all really. In Fusion, it seems there are only certain pre-configured lighting "Environments" that may be applied. I couldn't figure a way, for example, to have a completely unlit space with the render lit only by the model itself. Nor could I figure a way to control where the "environmental" light source comes from. I assume a dedicated rendering package allows much more flexibility, huh?

[TrippyLighting]

If you turn the environment brightness down then the scene is illuminated only by emitting surfaces. Fusion 36 uses IBL or image based lighting and the light source es are those present in the HDRI environments. But you can use your own HDRI's.

[chrisplyler]

AHA thanks for that. Should have been obvious, huh? I so often feel that I'm a genius about complex stuff, and then a complete moron when it comes to the little stuff that should be obvious.