[Optics] Lightrays should stop if they hit the light ray source box (e.g. of laser pointer)

[FlorianGlawogger]

Describe the defect
If a light ray of e.g. laser pointer is reflected towards the box representing the light source, the ray goes through the source box as if it were transparent. That should not be the case, it should stop as if the black box was a wall component.