空心导光管 (HL G)是一种非同寻常的照明技术 ,从一个光源发出的光通过它可以传输并相当均匀地分布在很大范围内。光线沿导光管进行镜面反射或经棱镜曲面进行完全内反射。导光管的取向既可水平也可垂直 ,还可制成非线性形状 ,如弧形等。尽管导光管的光效不那么高 ,但它可为节能 Hollow light pipe (HL G) is an extraordinary lighting technology, through which light emitted from a light source can be transmitted and fairly evenly distributed over a wide range. The light is specularly reflected along the light pipe or completely internally reflected by the prism surface. Light guide tube orientation can be horizontal or vertical, but also made of non-linear shape, such as curved and so on. Although the light efficiency of light pipe is not so high, but it can be energy-saving