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light emitting diode package lens
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light emitting diode package lens
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工学
发光二极管封装工艺
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light emitting diode package lens
发光二极管封装透镜
与发光二极管紧密连接在一起,有助于提升发光二极管的出光效率,改变发光二极管的光场分布的结构部件。
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Fourier
Fourier algebra
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