LIGHT EMITTING DEVICE AND BACKLIGHT MODULE INCLUDING SAME

摘要

A light emitting device includes a light source and a light diverging unit including a first light diverging part and a second light diverging part including a bottom surface and a first light emitting surface connected by a side surface. The bottom surface defines a first receiving space for receiving the light source, the first light emitting surface defines a second receiving space communicating with the first receiving space, and the second receiving space comprises a first connecting surface. The second light diverging part is inserted into the second receiving space, and comprises a second light emitting surface and a second connecting surface. The second connecting surface fully contacts the first connecting surface, the second light emitting surface smoothly connects to the first light emitting surface. A refraction index of the first light diverging part is smaller than that of the second light diverging part.

主权项

1. A light emitting device comprising:
a light source; and a light diverging unit comprising:
a first light diverging part comprising a bottom surface, a first light emitting surface and a side surface connecting the bottom surface to the first light emitting surface, the bottom surface defining a first receiving space for receiving the light source, the first light emitting surface defining a second receiving space communicated with the first receiving space, the second receiving space comprising a first connecting surface; anda second light diverging part inserted into the second receiving space, and comprising a second light emitting surface and a second connecting surface, the second connecting surface fully contacting to the first connecting surface, the second light emitting surface smoothly connecting to the first light emitting surface; whereina refraction index of the first light diverging part is smaller than a refraction index of the second light diverging part.