Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – In combination with or also constituting light responsive...
Reexamination Certificate
2011-03-08
2011-03-08
Jackson, Jr., Jerome (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
In combination with or also constituting light responsive...
C257S098000, C257S088000, C257S081000, C257SE25009
Reexamination Certificate
active
07902560
ABSTRACT:
A uniform high brightness light source is provided using a plurality of light emitting diode (LED) chips with slightly different pump wavelengths with a wavelength converting element that includes at least two different wavelength converting materials that convert the light to different colors of light. The intensity of the light produced by the LED chips may be varied to provide a tunable CCT white point. The wavelength converting element may be, e.g., a stack or mixture of phosphor or luminescent ceramics. Moreover, the manufacturing process of the light source is simplified because the LED chips are all manufactured using the same technology eliminating the need to manufacture different types of chips.
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International Search Report and Written Opinion, 13 pages.
Bierhuizen Serge J.
Harbers Gerard
Jackson, Jr. Jerome
Koninklijke Philips Electronics , N.V.
Page Dale
Philips Lumileds Lighting Company LLC
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