The best LED on the market is 32 lumens per watt, which is twice that of tungsten filament bulbs. And people can predict that 60 lumens per watt will be emitted, and LEDs as bright as fluorescent lamps will appear in 2004.

In the process of electron transfer, the energy released by high brightness and low heat LED is mainly concentrated in the range of visible light. Unlike other tungsten filament bulbs, most of its electromagnetic energy is concentrated in the infrared region, which makes people feel very hot. That is to say, LED converts almost all electric energy into light energy, so LED is a high-efficient and low heat product.