Hello! As this is my first post - I'm Mike from Poland, currently studying product design on Academy of Fine Arts in Warsaw. I'm working on a sculpture - light installation. I want to achieve an effect of a regular beam of white light - light cylinder in slightly opaque water. Sort of similar effect to light diffusion in fog. I did some experiments with lenses but what I got was fuzzy edges and focused or spread beam. I suppose I would have to use some certain combination of lenses, or a light collimator. Could you help me with this?