| 摘要 |
Disclosed are a light-emitting device and a stage lamp system, the device comprising a first LED array (310, 710, 810), a second LED array (320, 720, 820), a third LED array (330, 730, 830) and a wavelength light combination device (340, 740, 840). The first LED array (310, 710, 810) comprises blue LEDs (311) used for emitting first light rays. The second LED array (320, 720, 820) comprises yellow fluorescent LEDs (321) or green fluorescent LEDs and green LEDs (322) used for emitting second light rays. The third LED array (330, 730, 830) comprises red LEDs (331) and amber LEDs (332) used for emitting third light rays. The second light rays are at least partly emitted into the wavelength light combination device (340, 740, 840). The wavelength light combination device (340, 740, 840) comprises a first filter (341, 741) and a second filter (342, 742). The first filter (341, 741) reflects light the wavelength of which is less than or equal to » 1 and transmits light the wavelength of which is greater than » 1 , and the second filter (342, 742) transmits light the wavelength of which is less than or equal to » 2 and reflects light the wavelength of which is greater than » 2 , where 470 nm ‰¤ » 1 ‰¤ 500 nm, 560 nm ‰¤ » 2 ‰¤ 590 nm. The first filter (341, 741) makes a reflected part of the first light rays and a transmitted part of the second light rays emit in a first direction. The second filter (342, 742) makes a transmitted part of the second light rays and a reflected part of the third light rays emit in the first direction. The light-emitting device and the stage lamp system can emit a white light with a high colour rendering index. |
