Are Mesh Lights Rendered Visible in Reality/LuxRender?
Yes, mesh lights, like any object in real life, are visible.
if you don't want to see the light in the frame then move it out of the frame. There is really no reason to have an unwanted light in the frame with LuxRender.
In the case of a tight spot it can be harder to do. A couple of tricks are:
- Remove a wall or the ceiling to make room
- Use a wide-angle lens, 25mm or less
- Resize the room to create additional space
Keep in mind that, by default, Reality does not export the backing of the meshlight, just the front surface is exported.