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Question:

LED light source: why is the lower the power, the higher the light efficiency?

LED light source: why is the lower the power, the higher the light efficiency?

Answer:

LED light source is a semiconductor device. When converting electric energy into light, it also generates heat, increasing the temperature of LED chips. The higher the temperature, the weaker the ability to convert light into light.
The smaller the current, the lower the relative temperature and the higher the light efficiency.But this is not without limits, the power drop to a certain extent, the light efficiency will reach a limit value.

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