Is it possible to use Light Cookies to "block" point light in a direction?

As the title says, is it possible? I don't know much about lights and everything that goes along with it.
I want to block my point light from illuminating towards a certain direction as if there were a wall there.

 

Would putting a wall in the way not accomplish that? No sarcasm intended. I might not understand what you're trying to do.

 

I am sorry for any confusing in my previous description of my problem. I made a image in order to make it easier to understand my problem.
http://imgur.com/LxoTCxu

 

I don't believe there is an easy way to achieve this using Unity's built-in lighting system in a sprite based game. I am working on an extension that I plan to throw into the asset store that would be able to handle what you are trying to do but as I do not know if/when it will ever be finished (due to algorithmic issues) I would suggest taking a look at Reverie Interactive's 2D Volumetric Lights, which seems to be fairly well supported and has been optimized to reduce the cost of adding dynamic lighting to your 2D game. At $15 it is quite a steal.