Untitled 3.jpgUntitled 4.jpg

On the first image can be seen clearly that it is not very well lighted inside the box. I've applied the window glass appearance on the front surface.

On the second image I've changed the opacity of the surface to around 0.8. Now the light goes through but we loose some of the reflection.

In bunkspeed light would go through normally.

Is there a reason why this has been changed in visualize?

Categories: SOLIDWORKS Visualize

Last comment By: Jochen Spohrer   Fri, 21 Apr 2017 15:46:08 GMT
Re: Light does not go through glass material

Hi Marios,


Thanks for bringing this to our attention. The comparison images definitely help. Let me connect with the Visualize R&D team for an answer.



By: Brian Hillner  Sat, 17 Dec 2016 17:24:00 GMT
Re: Light does not go through glass material

Hi Marios,


We tested side by side with Bunkspeed 2014 and Visualize 2017, and got the exact same results.


We would expect more light to spill into the box through the glass, casting a harsher shadow...even when the glass part is 100% visible.

We will follow up with the NVIDIA Iray team to get their thoughts on this matter.




By: Brian Hillner  Thu, 19 Jan 2017 08:32:13 GMT
Re: Light does not go through glass material

Hi Brian,


thanks for the feedback. In Bunkspeed 2011 I think, more light would go through...

By: Marios Pazaitis  Thu, 19 Jan 2017 11:29:19 GMT
Re: Light does not go through glass material

Hi Marios,


we were able to reproduce and fix this. This fix will be made available in the next 2017 service pack (2017sp3) and next major version (2018).


Further notes:

This issue is related to the roughness of the transparent material. In order for the most light to shine through, roughness should be 0 which is going to be the default value going forward.

By: Bastian Krueckeberg  Mon, 30 Jan 2017 10:42:40 GMT
Re: Light does not go through glass material

I Think i have the same Problem trying to make a light bulb. I selected the Material "clear glass" and get a perfekt preview, like expacted.

After switching to "fast", the bulb is verry dark and nearly Black. Did I miss something?

After switching to "accurate", the bulb is display transparent, but not as good as the preview...

Tank you for any Answer, Joe



Quality "Fast":


Quality Accurate:


By: Jochen Spohrer  Thu, 20 Apr 2017 20:55:02 GMT
Re: Light does not go through glass material

Hi Jochen,


Please try tweaking the following parameters until you receive the expected visual result:


1) Solid/Non-Solid

2) Color. Choose a very bright color. In the case of clear glass, the color should be white.

3) Roughness. Set Roughness to 0 for allowing maximum of light passing through glass.

4) Color Density. This is very important for Solid Glass appearances that are non-white. This parameter is dependent on the size of the object itself. For an object which dimension is roughly 1m^3 you should choose a value of 1000 (mm).

By: Bastian Krueckeberg  Fri, 21 Apr 2017 08:15:30 GMT
Re: Light does not go through glass material

Thanks for the tip, Bastian.


If you need help smoothing out your faceted part of the light bulb glass, here is a helpful tip:


This step cannot be undone, so please Save As before starting this workflow. First select blue part tool then select desired part.



No go over to the Palette to the 'Parts/Normal Control' section:


Make sure 'Faceted' is selected, keep the default value of 20, and click 'Rebuild Normals.' If the 'Faceted' doesn't fix your surface how you want, try adjusting the value to either end of the slider and click 'Rebuild Normals' each time to see the resulting effect. If you still aren't happy with the surface quality, then try using the 'Smooth' feature, then select 'Rebuild Normals.' However 'Faceted' works on the widest variety of projects.

By: Brian Hillner  Fri, 21 Apr 2017 13:34:11 GMT
Re: Light does not go through glass material

Thank you for your fast answers and your Information. i got good results now

By: Jochen Spohrer  Fri, 21 Apr 2017 15:46:08 GMT
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