Conversion relations of led luminous flux and led power
The led luminous flux refer to how much of led luminous led source produces per unit time. In simply work is that it gives a total luminous of led. The theory has found an increasingly wide utilization in design work. . The luminous flux big ,the bright .Indicate unit as Lm, the paper below presents a kinds of algorithm for conversion between the luminous flux and led power .
In fact, we can even hear colors that the human eye cannot perceive, like infrared and ultraviolet.( infrared and ultraviolet produces by uv led strip) .but in here we talked exclusively about vision light.
The human eye in most sensitive of light is 555nm (yellow green), 1W=683lm,in other words:

1 watt can translate into 683lm. This is Calibrating Value also be the most conversion rate.

For other color, the red(650nm),1 watt equivalent of just 73lm. The reason is human eye are relatively insensitive to red.