Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2008-02-08
2010-11-23
Ngo, Ngan (Department: 2893)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S100000, C257S789000, C257S790000, C257SE33061, C257SE33059, C313S485000, C313S503000
Reexamination Certificate
active
07838896
ABSTRACT:
A light emitting apparatus includes a blue light emitting diode (LED), a first and second phosphor layers. The second phosphor layer is between the blue LED and the first phosphor layer. When a blue beam of a shorter wavelength excites the phosphor layers, the excitation efficiency of the first phosphor layer is greater than that of the second phosphor layer. When a blue beam of a longer wavelength excites the phosphor layers, the excitation efficiency of the first phosphor layer is less than that of the second phosphor layer. Moreover, the wavelength of the peak intensity of the light beam from the first phosphor layer is shorter than that of the second phosphor layer. And, the dividing value between the shorter wavelength and the longer wavelength is within the range from a first wavelength to a second wavelength.
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Liu Ru-Shi
Su Hung-Yuan
Bacon & Thomas PLLC
Lite-On Technology Corporation
Liu Benjamin Tzu-Hung
Ngo Ngan
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