| 摘要 |
A high efficiency refraction body includes a light source chamber and a main refraction surface opposite to the light source chamber. A first refraction surface and a second refraction surface for refracting the lights are formed to a peripheral of the high efficiency refraction body. A light source is received to the light source chamber. Lights from the light source will be total reflected because the incident angles of the lights exceed a critical angle of the main refraction surface. The reflected lights will be refracted through the first refraction surface and the second refraction surface so as to pass a lateral of the refraction body. A uniform lateral illumination of the refraction body will correct the poor lateral illumination of LED light devices.
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