Can't get light bulb to work

[Doug Armand]

Did you apply the emitter material to the bulb itself?

The problem seems to be if you want a clear bulb and lit filament.

[Godzilla]

no the bulb is transparent

[Doug Armand]

Transparent but frosted? not clear glass.

Works well though if you are after a opalescent bulb - personally I like it - may use it myself

Left pane of glass with your material - right pane with clear glass.

Edited to update image

[Silmä]

turning bidir and metro off gives better result:

[Doug Armand]

Thats looking better - I didn't try that

[Silmä]

I quess it's the quadruple pass through glass with bidir that's messing things up. I also rendered a very small sample up to like 20 000 spp with those on and it eventually did clear up...

[Doug Armand]

Looks kinda funky with aperture diffraction on

BDir and Metro off

[Polinalkrimizei]

Merry christmas?!

[Borgleader]

Thanks I'll look into all possible avenues Also,merry xmas

[Polinalkrimizei]

Everything you guys say makes a lot of sense but I still don't get it:
Even though the model is not a 100% perfect (modifiers not applied, too big, glass to thick...) this SHOULD work!
I assigned other materials (one of the famous schott db without cauchy b to be precise) and it works actually (just need higher ev adjust and a little higher iso). So it seems to be a material problem that I don't get.
First picture is everything untouched, exept the glass material.
Second picture is with inner faces of the glass removed and ghost glass mat applied.

[Polinalkrimizei]

I made two more tests and I think the answer is: Your glass ist just way too thick. If you just remove the inner faces of the bulb, your material works fine
Or just scale everything to real-world-size.

[Borgleader]

I'm geting a "matrix is not invertible" error now >.>

[benn]

I know it's less accurate but it looks better to me if I delete the glass around the filament but leave the bulb - clears up faster.

[benn]

Here are my renders:

[benn]

And without the glass: