Hi I have a personal art project and I am stuck, because of very limited knowledge. I'd like to project an 1-2 meter white line from 1-3 meter distance. The projected line should be as thin as possible (3-10mm) and as powerful as possible. I created a DIY projector, but my problem is that, the line is not thin and powerfull enough. I am in process of adding cylindrical lens to focus most of the light on the slit, but I am afraid it won't be enough. I'd appreciate if you could give me some idea of a different system or improving this one. My budget is somehow limited. See the image of the projector, I've created.