Hi! I need a little help. Here is my problem, I have a light source and a monocromator that seperates the white light to to its components of different wavelenght. I want to measure the power of the output light which has a single wavelenght. I am using a Lux meter to measure the illumation of the light but I dont know how to convert it into watt. Could you please help me about this? ı am reading stuff about lux, watt and lumen but im totally confused.