| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system for continuously or stepwise varying the color temperature of illuminated light without interrupting the illuminated light. <P>SOLUTION: The lighting system 1 comprises a LED 13 and a variable color member 21. The variable color member 21 is opposed to the LED 13 and arranged movably relative to the LED 13 in the extending direction of a light axis A of light emitted by the LED 13. The variable color member 21 has a plurality of wavelength converting portions 23, 24. The wavelength converting portions 23, 24 is concentrically provided on the basis of the light axis A including a phosphor excited by the light emitted by the LED 13 to emit light, and formed so that their light emitting wavelengths are mutually different. Thus, a distance between the LED 13 and the variable color member 21 is changed to vary the color temperature of the light emitted by the LED 13. <P>COPYRIGHT: (C)2009,JPO&INPIT |
