Many people think the LED light expensive. It is not a good idea to use the LED light for the lighting. Actually, it is not only healthy, but also good for your eyes, for no glare. It also can save energy. I think you can save the cost after one year.
The energy saving comparison of LED light and the traditional lamp
The luminous flux of LED light is as 1.6, 4 and 5 times as the common energy saving lamp, fluorescent lamp and incandescent lamp. LED light has excellent CRI. Its lifespan is as 10 times as the common energy saving lamp, even 50 times as the incandescent lamp.
The LED technology has developped many years. Its light efficiency has been improved greatly. The light efficiency of incandescent lamp is 12-24 lm/W, 50-70 for the fluorescent lamp, and 70-120 for the sodium lamp. LED light efficiency has got 100-140 lm/w. Besides, the light has no glare, no UV, IR, no radiation and so on.
The equivalent brightness comparison of the light:
| Lamp | W | W | W |
| LED Light | 1 | 3 | 4 |
| Energy Saving | 3 | 8 | 11 |
| Incandescent Lamp | 15 | 20 | 40 |
The cost comparison of Incandescent lamp, energy saving lamp and LED light:
| Lamp | No. | Power(w) | Lighting time(h) | Days | Power consumption(KWH) | Electricity Price(RMB) | Whole year electricity cost(RMB) |
| Incandescent lamp | 10 | 40 | 5 | 365 | 1095 | 1 | 1095 |
| Energy Saving Lamp | 10 | 11 | 5 | 365 | 274 | 1 | 274 |
| LED Light | 10 | 4 | 5 | 365 | 73 | 1 | 73 |
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