@Nodda Duma Regarding fresnel lenses, (I know you said it wouldn't work as well) could the fresnel be at the bottom of an acrylic or glass block? Would there be a difference compared to having it at the top of the block? What I mean is, if the block was pressed up to my phone would the glass between the phone and the fresnel such as: https://www.materialsampleshop.com/products/fresnel-lens-film , work somewhat? Or still no? The ball lens works fine, im just curious (and to learn).