| 摘要 |
A lighting device includes a lighting part, a switching part and a luminance fine-tuning part. The lighting part at least includes a first light emitting diode unit for outputting light with a first color temperature and a second light emitting diode unit for outputting light with a second color temperature. The switching part is coupled with a power source. By changing the number of times the switching part is turned on, the light with desired color temperature and luminance is produced by the lighting part according to the user's requirements. By operating the luminance fine-tuning part, the selected luminance is slightly increased or decreased.
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