Lighthouse light in AR

Hi,
I want to create light from lighthouse. The problem is that lighthouse is the only one object in the scene so unity’s spotlight, are useless, because it has nothing to affect on.
Have you any idea how can I imitate light in AR?

I’m guessing that you want the light to “affect” real life objects? You could use a shader or semi-transparent texture to have some yellow-ish overlay on the rest of your scene