Interesting idea! I'm assuming r denotes the distance the ray has traveled when hitting the boundary, right? Getting from r(φ) to f(φ) is easy once I've got r(φ), which is somehow smoothly connected to f(x=0), but it is the same story as before: Snell's law tells me the slopes of the tangents...
Hi everybody,
I’m trying to calculate the shape of a boundary line f(x) between two mediums that collimates rays from a point light source. This requires the rays to hit the boundary line under a certain angle, so I calculated the slope m(φ) of the boundary line for a ray with polar angle φ (φ...