The encapsulant includes an inner lens and an outer lens, the inner lens having a refractive index less than, and in some cases about 70 to 80% of, the refractive index of the outer lens.

所述封壳具有内透镜以及外透镜，所述内透镜的折射率小于所 述外透镜的折射率，并且在某些情况下为所述外透镜折射率的70％到 80％。

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The encapsulant includes an inner lens and an outer lens, the inner lens having a refractive index less than, and in some cases about 70 to 80% of, the refractive index of the outer lens.

所述封壳具有内透镜以及外透镜，所述内透镜的折射率小于所 述外透镜的折射率，并且在某些情况下为所述外透镜折射率的70％到 80％。

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