| 摘要 |
<p>A white light LED device comprising a first diode generating light at a first dominant wavelength in blue colour range and a second diode generating light at a second dominant wavelength in green-yellow colour range, the device further comprising a colour pigment substance surrounding at least the first diode, configured to convert by photoluminescence some of the energy emitted by the first diode into light in orange or yellow colour range.
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