| 摘要 |
PURPOSE: An LED lamp for controlling color temperature is provided to control freely the color temperature and enhance a color rendering effect by using a white LED and plural LEDs of different colors. CONSTITUTION: An LED lamp for controlling color temperature includes a first blue LED, a second LED, and a third LED. The first blue LED is used for controlling an emission peak wavelength on a blue region of 430 to 470nm. The second LED is used for controlling an emission peak wavelength on a yellow-green region of 530 to 570nm. The third LED is used for controlling an emission peak wavelength on a flame-colored region of 595 to 630nm. The first LED and the third LED are arranged within the second LED group. The color temperature is controlled within a range of 3000 to 8000 K by controlling the intensity of relative radiation between the first LED and the second LED or the third LED and the second LED. |
