LIGHT GUIDE ELEMENT AND LIGHT SOURCE DEVICE USING THE LIGHT GUIDE ELEMENT

摘要

A light guide element and a light source device using the same are provided. The light guide element has a main body. The side surface is located between the bottom surface and the light-emitting surface. The bottom surface is opposite to the light-emitting surface. The main body has a hollow portion with a cone shape. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The light source device includes the light guide element and a light emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.

主权项

1. A light guide element, comprising:
a main body having a light-emitting surface, a bottom surface, and a side surface, wherein the side surface is located between the bottom surface and the light-emitting surface, and the bottom surface is opposite to the light-emitting surface, and the main body has a cone-shaped hollow portion used to receive exterior light, and the cone-shaped hollow portion comprises:
a bottom portion located at the bottom surface, and having a first hollow cross-sectional area; anda top portion opposite to the bottom portion, and having a second hollow cross-sectional area, wherein the second hollow cross-sectional area is smaller than the first hollow cross-sectional area.