What is the units for ambientLightIntensity in ray tracing mode in Isaac Sim?

As the units range from 0 to 10 for diffuse light (ambient light) in isaac sim, may I know what are the units used for the default diffuse lighting in ray tracing mode? I notice that the units are different from the light sources placed in scenes (which units I assume are in lumens). This is because I noticed that by adjusting the diffuse light to 10 makes the scene very bright.

Thanks for the help

Hi @ngzl , please refer this document Isaac Sim Tips & Useful Links — Omniverse Robotics documentation and let me know if that helps you set the scene properly or not.