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SOLID STATE LIGHT EMITTING DEVICES INCLUDING NONHOMOGENEOUS LUMINOPHORIC PARTICLE SIZE LAYERS
SOLID STATE LIGHT EMITTING DEVICES INCLUDING NONHOMOGENEOUS LUMINOPHORIC PARTICLE SIZE LAYERS
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机译:固态发光器件,包括不均匀的发光颗粒尺寸层
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摘要
A light emitting device includes an LED and a layer of luminophoric particles, such as phosphor, that are non-homogeneous in size as a function of distance away from the LED. For example, a first layer of relatively large size phosphor particles may be provided between a second layer of relatively small size phosphor particles and the LED. The large particles can provide high brightness and the small particles can reduce angular color temperature variation in emitted light.
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