请问什么是wall plug efficiency？

In optics, wall-plug efficiency or radiant efficiency is the energy conversion efficiency with which the system converts electrical power into opticalpower. It is defined as the ratio of the radiant flux (i.e., the total optical output power) to the input electrical power.[1]
In laser systems, this efficiency includes losses in the power supply and also the power required for a cooling system, not just the laser itself.

电光转换效率，应该是激光领域的术语

墙堵效率