Need help to figure out this question for project.

Question:What ratio of waste heat to electromagnetic radiation produced by the LED?

Source/Info:

- LED type: 740nm(red, but still a little infrared) and 850nm(infrared)

-LED is about 100W*4, shining for about 20-30mins

-Entire set of LEDs: 400-500mW of power ~ 400-500mW of heat

- the heat is only in the LED area, and other components do not get hot at all.

- Each LED emits about 170mW of radiant power, and we will have a pair of LEDs in each location. So we will have roughly ~350mW of power at each location. There are 3 locations not so close to each other in the new design.