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UV/BLUE LED-PHOSPHOR DEVICE WITH EFFICIENT CONVERSION OF UV/BLUE LIGHT TO VISIBLE LIGHT
UV/BLUE LED-PHOSPHOR DEVICE WITH EFFICIENT CONVERSION OF UV/BLUE LIGHT TO VISIBLE LIGHT
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机译:紫外/蓝光LED-磷装置,可将紫外/蓝光有效转换为可见光
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摘要
A light emitting device for use in lighting and/or display applications includes a UV/blue LED located in a depression having reflecting sidewalls, a light transmitting material surrounding the LED and filling the depression, and a phosphor in the form of particles either dispersed in the light transmitting material or adhered to the surface of the LED. The sidewalls reflect UV as visible light, thus enhancing the efficiency of the device. Optical filters located on the top of the LED and/or the bottom of a UV absorbing glass plate covering the depression further enhance efficiency and/or spectral characteristics of the emitted light.
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