Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2011-08-30
2011-08-30
MacChiarolo, Peter (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C362S231000, C313S506000
Reexamination Certificate
active
08008850
ABSTRACT:
A color temperature tunable white light emitting device is provided, including a substrate with an ultraviolet light emitting diode, a purple light emitting diode, and a blue light emitting diode provided over the substrate. The UV LED, the purple LED and the blue LED are coated with a phosphor layer. An omnidirectional reflector is disposed over the phosphor layer. A medium layer is disposed between the omni-directional reflector and the phosphor layer. A transparent substrate is disposed over the omnidirectional reflector and an optical diffuser is disposed over the transparent substrate.
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Lu Chun-Lin
Su Jung-Chieh
Macchiarolo Peter
National Taiwan University of Science & Technology
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