I am very new to Blender and am using it to create images for a new kind of solar energy device. However, one of the pieces of this device is an optical filter: i.e. it is a square plane that reflects ONLY the red light. Thus, blue light can pass through.
My question to the wonderful people on Blender Stack Exchange: is there any way of creating a material that reflects only a small portion of the visible light? I realize that this is a very niche topic, but any ideas or advice you may have will be much appreciated!
Thanks so much in advance.