Light source including a wavelength-converted semiconductor light emitting device and a filter
AssigneesKoninklijke Philips Electronics N.V., Philips Lumileds Lighting Company, LLC
InventorMichael R. Krames
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AssigneesKoninklijke Philips Electronics N.V., Philips Lumileds Lighting Company, LLC
InventorMichael R. Krames
Estimating the term…
A semiconductor light emitting device comprises a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer is adapted to emit first light having a first peak wavelength. A first wavelength converting material is adapted to absorb the first light and emit second light having a second peak wavelength. A second wavelength converting material is adapted to absorb either the first light or the second light and emit third light having a third peak wavelength. A filter is adapted to reflect fourth light having a fourth peak wavelength. The fourth light is either a portion of the second light or a portion of the third light. The filter is configured to transmit light having a peak wavelength longer or shorter than the fourth peak wavelength. The filter is disposed over the light emitting device in the path of at least a portion of the first, second, and third light.
A structure comprising:
A structure comprising:
Dependencies are inferred from the claim text.