Patent ID: 8441179

Claim:
A lighting device, comprising: a semiconductor light emitting device; a first lumiphor that includes luminescent materials, the first lumiphor having a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and a second surface opposite the first surface; a second lumiphor that is different from the first lumiphor, the second lumiphor having a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and radiation emitted by the luminescent materials in the first lumiphor, the second lumiphor being spaced-apart from the first lumiphor and from the semiconductor light emitting device; wherein the first lumiphor comprises a leaky lumiphor in that the luminescent materials therein wavelength convert less than 90% of the radiation from the semiconductor light emitting device light that is incident on the first lumiphor, wherein the blue LED comprises a first blue LED, the lighting device further comprising: a second blue LED that emits radiation having a peak wavelength between 400 and 489 nm; and a third lumiphor that includes different luminescent materials than the luminescent materials that are included in the first and second lumiphors, the third lumiphor having a first surface that is positioned to receive radiation emitted by the second blue LED, wherein the second lumiphor is also positioned to receive radiation emitted by the second blue LED and is spaced-apart from the third lumiphor.